better way to reuse PCH in examples, added CMake-Option to (de)activate PCH-usage

cmake/jkqtplotter_cmake_options.cmake

@@ -16,6 +16,9 @@ endif()
 if(NOT DEFINED JKQtPlotter_BUILD_FORCE_NO_PRINTER_SUPPORT)
     option(JKQtPlotter_BUILD_FORCE_NO_PRINTER_SUPPORT "Build the library with printer support switched off, even if it is available" OFF)
 endif()
+if(NOT DEFINED JKQtPlotter_BUILD_WITH_PRECOMPILED_HEADERS)
+    option(JKQtPlotter_BUILD_WITH_PRECOMPILED_HEADERS "Build the library using precompiled headers to improve compile speed" ON)
+endif()
 if(NOT DEFINED CMAKE_INSTALL_PREFIX)
     option(CMAKE_INSTALL_PREFIX "Install directory" ${CMAKE_CURRENT_SOURCE_DIR}/install)
 endif()

doc/dox/buildinstructions.dox

@@ -53,6 +53,7 @@ The CMake build system offers several configuration variables that you may set/c
   - \c JKQtPlotter_BUILD_INCLUDE_XITS_FONTS : Include XITS fonts as resources in library (default: \c ON )
   - \c JKQtPlotter_BUILD_FORCE_NO_PRINTER_SUPPORT : switches off print-support (when set to \c ON ), even if the current platform supports it (default: \c OFF )
   - \c JKQtPlotter_BUILD_DECORATE_LIBNAMES_WITH_BUILDTYPE : If set, the build-type is appended to the library name (default: \c ON )
+  - \c JKQtPlotter_BUILD_WITH_PRECOMPILED_HEADERS : If set, the build uses precompiled headers to speed up (a bit) (default: \c ON )
   - \c JKQtPlotter_BUILD_EXAMPLES : Build examples (default: \c ON )
   - \c CMAKE_INSTALL_PREFIX : Install directory for the library
 .

examples/CMakeLists.txt

@@ -5,6 +5,11 @@ message( STATUS "...............................................................
 message( STATUS ".. BUILDING EXAMPLES" )
 message( STATUS "............................................................................." )
 
+# needs to be first for Precompiled Headers to work
+add_subdirectory(simpletest)
+
+
+
 add_subdirectory(jkqtfastplotter_test)
 
 add_subdirectory(jkqtmathtext_simpletest)
@@ -49,7 +54,6 @@ add_subdirectory(rgbimageplot)
 add_subdirectory(rgbimageplot_cimg)
 add_subdirectory(rgbimageplot_opencv)
 add_subdirectory(rgbimageplot_qt)
-add_subdirectory(simpletest)
 add_subdirectory(speed)
 add_subdirectory(stackedbars)
 add_subdirectory(stepplots)

examples/advplotstyling/CMakeLists.txt

@@ -16,14 +16,15 @@ add_executable(${EXENAME} WIN32 ${SOURCES} ${HEADERS} ${RESOURCES} ${UIS})
 target_include_directories(${EXENAME} PRIVATE ../../lib)
 if(JKQtPlotter_BUILD_STATIC_LIBS)
     target_link_libraries(${EXENAME} JKQTPlotterLib)
-    # precomiled headers to speed up compilation
-    target_precompile_headers(${EXENAME} PRIVATE ../../lib/jkqtplotter/private/jkqtplotter_precomp.h)
 elseif(JKQtPlotter_BUILD_SHARED_LIBS)
     target_link_libraries(${EXENAME} JKQTPlotterSharedLib)
-    # precomiled headers to speed up compilation
-    target_precompile_headers(${EXENAME} PRIVATE ../../lib/jkqtplotter/private/jkqtplotter_precomp.h)
 endif()
 
+# precomiled headers to speed up compilation
+if (JKQtPlotter_BUILD_WITH_PRECOMPILED_HEADERS)
+  target_precompile_headers(${EXENAME} REUSE_FROM jkqtptest_simpletest)
+endif (JKQtPlotter_BUILD_WITH_PRECOMPILED_HEADERS)
+
 # Installation
 install(TARGETS ${EXENAME} RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR})
 

examples/barchart/CMakeLists.txt

@@ -16,14 +16,14 @@ add_executable(${EXENAME} WIN32 ${SOURCES} ${HEADERS} ${RESOURCES} ${UIS})
 target_include_directories(${EXENAME} PRIVATE ../../lib)
 if(JKQtPlotter_BUILD_STATIC_LIBS)
     target_link_libraries(${EXENAME} JKQTPlotterLib)
-    # precomiled headers to speed up compilation
-    target_precompile_headers(${EXENAME} PRIVATE ../../lib/jkqtplotter/private/jkqtplotter_precomp.h)
 elseif(JKQtPlotter_BUILD_SHARED_LIBS)
     target_link_libraries(${EXENAME} JKQTPlotterSharedLib)
-    # precomiled headers to speed up compilation
-    target_precompile_headers(${EXENAME} PRIVATE ../../lib/jkqtplotter/private/jkqtplotter_precomp.h)
 endif()
 
+# precomiled headers to speed up compilation
+if (JKQtPlotter_BUILD_WITH_PRECOMPILED_HEADERS)
+  target_precompile_headers(${EXENAME} REUSE_FROM jkqtptest_simpletest)
+endif (JKQtPlotter_BUILD_WITH_PRECOMPILED_HEADERS)
 
 
 # Installation

examples/boxplot/CMakeLists.txt

@@ -16,14 +16,17 @@ add_executable(${EXENAME} WIN32 ${SOURCES} ${HEADERS} ${RESOURCES} ${UIS})
 target_include_directories(${EXENAME} PRIVATE ../../lib)
 if(JKQtPlotter_BUILD_STATIC_LIBS)
     target_link_libraries(${EXENAME} JKQTPlotterLib)
-    # precomiled headers to speed up compilation
+
-    target_precompile_headers(${EXENAME} PRIVATE ../../lib/jkqtplotter/private/jkqtplotter_precomp.h)
 elseif(JKQtPlotter_BUILD_SHARED_LIBS)
     target_link_libraries(${EXENAME} JKQTPlotterSharedLib)
-    # precomiled headers to speed up compilation
+
-    target_precompile_headers(${EXENAME} PRIVATE ../../lib/jkqtplotter/private/jkqtplotter_precomp.h)
 endif()
 
+# precomiled headers to speed up compilation
+if (JKQtPlotter_BUILD_WITH_PRECOMPILED_HEADERS)
+  target_precompile_headers(${EXENAME} REUSE_FROM jkqtptest_simpletest)
+endif (JKQtPlotter_BUILD_WITH_PRECOMPILED_HEADERS)
+
 
 
 # Installation

examples/contourplot/CMakeLists.txt

@@ -16,14 +16,14 @@ add_executable(${EXENAME} WIN32 ${SOURCES} ${HEADERS} ${RESOURCES} ${UIS})
 target_include_directories(${EXENAME} PRIVATE ../../lib)
 if(JKQtPlotter_BUILD_STATIC_LIBS)
     target_link_libraries(${EXENAME} JKQTPlotterLib)
-    # precomiled headers to speed up compilation
-    target_precompile_headers(${EXENAME} PRIVATE ../../lib/jkqtplotter/private/jkqtplotter_precomp.h)
 elseif(JKQtPlotter_BUILD_SHARED_LIBS)
     target_link_libraries(${EXENAME} JKQTPlotterSharedLib)
-    # precomiled headers to speed up compilation
-    target_precompile_headers(${EXENAME} PRIVATE ../../lib/jkqtplotter/private/jkqtplotter_precomp.h)
 endif()
 
+# precomiled headers to speed up compilation
+if (JKQtPlotter_BUILD_WITH_PRECOMPILED_HEADERS)
+  target_precompile_headers(${EXENAME} REUSE_FROM jkqtptest_simpletest)
+endif (JKQtPlotter_BUILD_WITH_PRECOMPILED_HEADERS)
 
 
 # Installation

examples/datastore/CMakeLists.txt

@@ -16,14 +16,16 @@ add_executable(${EXENAME} WIN32 ${SOURCES} ${HEADERS} ${RESOURCES} ${UIS})
 target_include_directories(${EXENAME} PRIVATE ../../lib)
 if(JKQtPlotter_BUILD_STATIC_LIBS)
     target_link_libraries(${EXENAME} JKQTPlotterLib)
-    # precomiled headers to speed up compilation
+
-    target_precompile_headers(${EXENAME} PRIVATE ../../lib/jkqtplotter/private/jkqtplotter_precomp.h)
 elseif(JKQtPlotter_BUILD_SHARED_LIBS)
     target_link_libraries(${EXENAME} JKQTPlotterSharedLib)
-    # precomiled headers to speed up compilation
+
-    target_precompile_headers(${EXENAME} PRIVATE ../../lib/jkqtplotter/private/jkqtplotter_precomp.h)
 endif()
 
+# precomiled headers to speed up compilation
+if (JKQtPlotter_BUILD_WITH_PRECOMPILED_HEADERS)
+  target_precompile_headers(${EXENAME} REUSE_FROM jkqtptest_simpletest)
+endif (JKQtPlotter_BUILD_WITH_PRECOMPILED_HEADERS)
 
 
 # Installation

examples/datastore_groupedstat/CMakeLists.txt

@@ -16,14 +16,16 @@ add_executable(${EXENAME} WIN32 ${SOURCES} ${HEADERS} ${RESOURCES} ${UIS})
 target_include_directories(${EXENAME} PRIVATE ../../lib)
 if(JKQtPlotter_BUILD_STATIC_LIBS)
     target_link_libraries(${EXENAME} JKQTPlotterLib)
-    # precomiled headers to speed up compilation
+
-    target_precompile_headers(${EXENAME} PRIVATE ../../lib/jkqtplotter/private/jkqtplotter_precomp.h)
 elseif(JKQtPlotter_BUILD_SHARED_LIBS)
     target_link_libraries(${EXENAME} JKQTPlotterSharedLib)
-    # precomiled headers to speed up compilation
+
-    target_precompile_headers(${EXENAME} PRIVATE ../../lib/jkqtplotter/private/jkqtplotter_precomp.h)
 endif()
 
+# precomiled headers to speed up compilation
+if (JKQtPlotter_BUILD_WITH_PRECOMPILED_HEADERS)
+  target_precompile_headers(${EXENAME} REUSE_FROM jkqtptest_simpletest)
+endif (JKQtPlotter_BUILD_WITH_PRECOMPILED_HEADERS)
 
 
 # Installation

examples/datastore_iterators/CMakeLists.txt

@@ -16,14 +16,16 @@ add_executable(${EXENAME} WIN32 ${SOURCES} ${HEADERS} ${RESOURCES} ${UIS})
 target_include_directories(${EXENAME} PRIVATE ../../lib)
 if(JKQtPlotter_BUILD_STATIC_LIBS)
     target_link_libraries(${EXENAME} JKQTPlotterLib)
-    # precomiled headers to speed up compilation
+
-    target_precompile_headers(${EXENAME} PRIVATE ../../lib/jkqtplotter/private/jkqtplotter_precomp.h)
 elseif(JKQtPlotter_BUILD_SHARED_LIBS)
     target_link_libraries(${EXENAME} JKQTPlotterSharedLib)
-    # precomiled headers to speed up compilation
+
-    target_precompile_headers(${EXENAME} PRIVATE ../../lib/jkqtplotter/private/jkqtplotter_precomp.h)
 endif()
 
+# precomiled headers to speed up compilation
+if (JKQtPlotter_BUILD_WITH_PRECOMPILED_HEADERS)
+  target_precompile_headers(${EXENAME} REUSE_FROM jkqtptest_simpletest)
+endif (JKQtPlotter_BUILD_WITH_PRECOMPILED_HEADERS)
 
 
 # Installation

examples/datastore_regression/CMakeLists.txt

@@ -16,14 +16,16 @@ add_executable(${EXENAME} WIN32 ${SOURCES} ${HEADERS} ${RESOURCES} ${UIS})
 target_include_directories(${EXENAME} PRIVATE ../../lib)
 if(JKQtPlotter_BUILD_STATIC_LIBS)
     target_link_libraries(${EXENAME} JKQTPlotterLib)
-    # precomiled headers to speed up compilation
+
-    target_precompile_headers(${EXENAME} PRIVATE ../../lib/jkqtplotter/private/jkqtplotter_precomp.h)
 elseif(JKQtPlotter_BUILD_SHARED_LIBS)
     target_link_libraries(${EXENAME} JKQTPlotterSharedLib)
-    # precomiled headers to speed up compilation
+
-    target_precompile_headers(${EXENAME} PRIVATE ../../lib/jkqtplotter/private/jkqtplotter_precomp.h)
 endif()
 
+# precomiled headers to speed up compilation
+if (JKQtPlotter_BUILD_WITH_PRECOMPILED_HEADERS)
+  target_precompile_headers(${EXENAME} REUSE_FROM jkqtptest_simpletest)
+endif (JKQtPlotter_BUILD_WITH_PRECOMPILED_HEADERS)
 
 
 # Installation

examples/datastore_statistics/CMakeLists.txt

@@ -16,14 +16,16 @@ add_executable(${EXENAME} WIN32 ${SOURCES} ${HEADERS} ${RESOURCES} ${UIS})
 target_include_directories(${EXENAME} PRIVATE ../../lib)
 if(JKQtPlotter_BUILD_STATIC_LIBS)
     target_link_libraries(${EXENAME} JKQTPlotterLib)
-    # precomiled headers to speed up compilation
+
-    target_precompile_headers(${EXENAME} PRIVATE ../../lib/jkqtplotter/private/jkqtplotter_precomp.h)
 elseif(JKQtPlotter_BUILD_SHARED_LIBS)
     target_link_libraries(${EXENAME} JKQTPlotterSharedLib)
-    # precomiled headers to speed up compilation
+
-    target_precompile_headers(${EXENAME} PRIVATE ../../lib/jkqtplotter/private/jkqtplotter_precomp.h)
 endif()
 
+# precomiled headers to speed up compilation
+if (JKQtPlotter_BUILD_WITH_PRECOMPILED_HEADERS)
+  target_precompile_headers(${EXENAME} REUSE_FROM jkqtptest_simpletest)
+endif (JKQtPlotter_BUILD_WITH_PRECOMPILED_HEADERS)
 
 
 # Installation

examples/datastore_statistics_2d/CMakeLists.txt

@@ -16,14 +16,16 @@ add_executable(${EXENAME} WIN32 ${SOURCES} ${HEADERS} ${RESOURCES} ${UIS})
 target_include_directories(${EXENAME} PRIVATE ../../lib)
 if(JKQtPlotter_BUILD_STATIC_LIBS)
     target_link_libraries(${EXENAME} JKQTPlotterLib)
-    # precomiled headers to speed up compilation
+
-    target_precompile_headers(${EXENAME} PRIVATE ../../lib/jkqtplotter/private/jkqtplotter_precomp.h)
 elseif(JKQtPlotter_BUILD_SHARED_LIBS)
     target_link_libraries(${EXENAME} JKQTPlotterSharedLib)
-    # precomiled headers to speed up compilation
+
-    target_precompile_headers(${EXENAME} PRIVATE ../../lib/jkqtplotter/private/jkqtplotter_precomp.h)
 endif()
 
+# precomiled headers to speed up compilation
+if (JKQtPlotter_BUILD_WITH_PRECOMPILED_HEADERS)
+  target_precompile_headers(${EXENAME} REUSE_FROM jkqtptest_simpletest)
+endif (JKQtPlotter_BUILD_WITH_PRECOMPILED_HEADERS)
 
 
 # Installation

examples/dateaxes/CMakeLists.txt

@@ -16,14 +16,16 @@ add_executable(${EXENAME} WIN32 ${SOURCES} ${HEADERS} ${RESOURCES} ${UIS})
 target_include_directories(${EXENAME} PRIVATE ../../lib)
 if(JKQtPlotter_BUILD_STATIC_LIBS)
     target_link_libraries(${EXENAME} JKQTPlotterLib)
-    # precomiled headers to speed up compilation
+
-    target_precompile_headers(${EXENAME} PRIVATE ../../lib/jkqtplotter/private/jkqtplotter_precomp.h)
 elseif(JKQtPlotter_BUILD_SHARED_LIBS)
     target_link_libraries(${EXENAME} JKQTPlotterSharedLib)
-    # precomiled headers to speed up compilation
+
-    target_precompile_headers(${EXENAME} PRIVATE ../../lib/jkqtplotter/private/jkqtplotter_precomp.h)
 endif()
 
+# precomiled headers to speed up compilation
+if (JKQtPlotter_BUILD_WITH_PRECOMPILED_HEADERS)
+  target_precompile_headers(${EXENAME} REUSE_FROM jkqtptest_simpletest)
+endif (JKQtPlotter_BUILD_WITH_PRECOMPILED_HEADERS)
 
 
 # Installation

examples/distributionplot/CMakeLists.txt

@@ -16,14 +16,16 @@ add_executable(${EXENAME} WIN32 ${SOURCES} ${HEADERS} ${RESOURCES} ${UIS})
 target_include_directories(${EXENAME} PRIVATE ../../lib)
 if(JKQtPlotter_BUILD_STATIC_LIBS)
     target_link_libraries(${EXENAME} JKQTPlotterLib)
-    # precomiled headers to speed up compilation
+
-    target_precompile_headers(${EXENAME} PRIVATE ../../lib/jkqtplotter/private/jkqtplotter_precomp.h)
 elseif(JKQtPlotter_BUILD_SHARED_LIBS)
     target_link_libraries(${EXENAME} JKQTPlotterSharedLib)
-    # precomiled headers to speed up compilation
+
-    target_precompile_headers(${EXENAME} PRIVATE ../../lib/jkqtplotter/private/jkqtplotter_precomp.h)
 endif()
 
+# precomiled headers to speed up compilation
+if (JKQtPlotter_BUILD_WITH_PRECOMPILED_HEADERS)
+  target_precompile_headers(${EXENAME} REUSE_FROM jkqtptest_simpletest)
+endif (JKQtPlotter_BUILD_WITH_PRECOMPILED_HEADERS)
 
 
 # Installation

examples/errorbarstyles/CMakeLists.txt

@@ -16,14 +16,16 @@ add_executable(${EXENAME} WIN32 ${SOURCES} ${HEADERS} ${RESOURCES} ${UIS})
 target_include_directories(${EXENAME} PRIVATE ../../lib)
 if(JKQtPlotter_BUILD_STATIC_LIBS)
     target_link_libraries(${EXENAME} JKQTPlotterLib)
-    # precomiled headers to speed up compilation
+
-    target_precompile_headers(${EXENAME} PRIVATE ../../lib/jkqtplotter/private/jkqtplotter_precomp.h)
 elseif(JKQtPlotter_BUILD_SHARED_LIBS)
     target_link_libraries(${EXENAME} JKQTPlotterSharedLib)
-    # precomiled headers to speed up compilation
+
-    target_precompile_headers(${EXENAME} PRIVATE ../../lib/jkqtplotter/private/jkqtplotter_precomp.h)
 endif()
 
+# precomiled headers to speed up compilation
+if (JKQtPlotter_BUILD_WITH_PRECOMPILED_HEADERS)
+  target_precompile_headers(${EXENAME} REUSE_FROM jkqtptest_simpletest)
+endif (JKQtPlotter_BUILD_WITH_PRECOMPILED_HEADERS)
 
 
 # Installation

examples/evalcurve/CMakeLists.txt

@@ -16,14 +16,16 @@ add_executable(${EXENAME} WIN32 ${SOURCES} ${HEADERS} ${RESOURCES} ${UIS})
 target_include_directories(${EXENAME} PRIVATE ../../lib)
 if(JKQtPlotter_BUILD_STATIC_LIBS)
     target_link_libraries(${EXENAME} JKQTPlotterLib)
-    # precomiled headers to speed up compilation
+
-    target_precompile_headers(${EXENAME} PRIVATE ../../lib/jkqtplotter/private/jkqtplotter_precomp.h)
 elseif(JKQtPlotter_BUILD_SHARED_LIBS)
     target_link_libraries(${EXENAME} JKQTPlotterSharedLib)
-    # precomiled headers to speed up compilation
+
-    target_precompile_headers(${EXENAME} PRIVATE ../../lib/jkqtplotter/private/jkqtplotter_precomp.h)
 endif()
 
+# precomiled headers to speed up compilation
+if (JKQtPlotter_BUILD_WITH_PRECOMPILED_HEADERS)
+  target_precompile_headers(${EXENAME} REUSE_FROM jkqtptest_simpletest)
+endif (JKQtPlotter_BUILD_WITH_PRECOMPILED_HEADERS)
 
 
 # Installation

examples/filledgraphs/CMakeLists.txt

@@ -16,14 +16,16 @@ add_executable(${EXENAME} WIN32 ${SOURCES} ${HEADERS} ${RESOURCES} ${UIS})
 target_include_directories(${EXENAME} PRIVATE ../../lib)
 if(JKQtPlotter_BUILD_STATIC_LIBS)
     target_link_libraries(${EXENAME} JKQTPlotterLib)
-    # precomiled headers to speed up compilation
+
-    target_precompile_headers(${EXENAME} PRIVATE ../../lib/jkqtplotter/private/jkqtplotter_precomp.h)
 elseif(JKQtPlotter_BUILD_SHARED_LIBS)
     target_link_libraries(${EXENAME} JKQTPlotterSharedLib)
-    # precomiled headers to speed up compilation
+
-    target_precompile_headers(${EXENAME} PRIVATE ../../lib/jkqtplotter/private/jkqtplotter_precomp.h)
 endif()
 
+# precomiled headers to speed up compilation
+if (JKQtPlotter_BUILD_WITH_PRECOMPILED_HEADERS)
+  target_precompile_headers(${EXENAME} REUSE_FROM jkqtptest_simpletest)
+endif (JKQtPlotter_BUILD_WITH_PRECOMPILED_HEADERS)
 
 
 # Installation

examples/functionplot/CMakeLists.txt

@@ -16,14 +16,16 @@ add_executable(${EXENAME} WIN32 ${SOURCES} ${HEADERS} ${RESOURCES} ${UIS})
 target_include_directories(${EXENAME} PRIVATE ../../lib)
 if(JKQtPlotter_BUILD_STATIC_LIBS)
     target_link_libraries(${EXENAME} JKQTPlotterLib)
-    # precomiled headers to speed up compilation
+
-    target_precompile_headers(${EXENAME} PRIVATE ../../lib/jkqtplotter/private/jkqtplotter_precomp.h)
 elseif(JKQtPlotter_BUILD_SHARED_LIBS)
     target_link_libraries(${EXENAME} JKQTPlotterSharedLib)
-    # precomiled headers to speed up compilation
+
-    target_precompile_headers(${EXENAME} PRIVATE ../../lib/jkqtplotter/private/jkqtplotter_precomp.h)
 endif()
 
+# precomiled headers to speed up compilation
+if (JKQtPlotter_BUILD_WITH_PRECOMPILED_HEADERS)
+  target_precompile_headers(${EXENAME} REUSE_FROM jkqtptest_simpletest)
+endif (JKQtPlotter_BUILD_WITH_PRECOMPILED_HEADERS)
 
 
 # Installation

examples/geo_arrows/CMakeLists.txt

@@ -16,14 +16,16 @@ add_executable(${EXENAME} WIN32 ${SOURCES} ${HEADERS} ${RESOURCES} ${UIS})
 target_include_directories(${EXENAME} PRIVATE ../../lib)
 if(JKQtPlotter_BUILD_STATIC_LIBS)
     target_link_libraries(${EXENAME} JKQTPlotterLib)
-    # precomiled headers to speed up compilation
+
-    target_precompile_headers(${EXENAME} PRIVATE ../../lib/jkqtplotter/private/jkqtplotter_precomp.h)
 elseif(JKQtPlotter_BUILD_SHARED_LIBS)
     target_link_libraries(${EXENAME} JKQTPlotterSharedLib)
-    # precomiled headers to speed up compilation
+
-    target_precompile_headers(${EXENAME} PRIVATE ../../lib/jkqtplotter/private/jkqtplotter_precomp.h)
 endif()
 
+# precomiled headers to speed up compilation
+if (JKQtPlotter_BUILD_WITH_PRECOMPILED_HEADERS)
+  target_precompile_headers(${EXENAME} REUSE_FROM jkqtptest_simpletest)
+endif (JKQtPlotter_BUILD_WITH_PRECOMPILED_HEADERS)
 
 
 # Installation

examples/geo_simple/CMakeLists.txt

@@ -16,14 +16,16 @@ add_executable(${EXENAME} WIN32 ${SOURCES} ${HEADERS} ${RESOURCES} ${UIS})
 target_include_directories(${EXENAME} PRIVATE ../../lib)
 if(JKQtPlotter_BUILD_STATIC_LIBS)
     target_link_libraries(${EXENAME} JKQTPlotterLib)
-    # precomiled headers to speed up compilation
+
-    target_precompile_headers(${EXENAME} PRIVATE ../../lib/jkqtplotter/private/jkqtplotter_precomp.h)
 elseif(JKQtPlotter_BUILD_SHARED_LIBS)
     target_link_libraries(${EXENAME} JKQTPlotterSharedLib)
-    # precomiled headers to speed up compilation
+
-    target_precompile_headers(${EXENAME} PRIVATE ../../lib/jkqtplotter/private/jkqtplotter_precomp.h)
 endif()
 
+# precomiled headers to speed up compilation
+if (JKQtPlotter_BUILD_WITH_PRECOMPILED_HEADERS)
+  target_precompile_headers(${EXENAME} REUSE_FROM jkqtptest_simpletest)
+endif (JKQtPlotter_BUILD_WITH_PRECOMPILED_HEADERS)
 
 
 # Installation

examples/geometric/CMakeLists.txt

@@ -16,14 +16,16 @@ add_executable(${EXENAME} WIN32 ${SOURCES} ${HEADERS} ${RESOURCES} ${UIS})
 target_include_directories(${EXENAME} PRIVATE ../../lib)
 if(JKQtPlotter_BUILD_STATIC_LIBS)
     target_link_libraries(${EXENAME} JKQTPlotterLib)
-    # precomiled headers to speed up compilation
+
-    target_precompile_headers(${EXENAME} PRIVATE ../../lib/jkqtplotter/private/jkqtplotter_precomp.h)
 elseif(JKQtPlotter_BUILD_SHARED_LIBS)
     target_link_libraries(${EXENAME} JKQTPlotterSharedLib)
-    # precomiled headers to speed up compilation
+
-    target_precompile_headers(${EXENAME} PRIVATE ../../lib/jkqtplotter/private/jkqtplotter_precomp.h)
 endif()
 
+# precomiled headers to speed up compilation
+if (JKQtPlotter_BUILD_WITH_PRECOMPILED_HEADERS)
+  target_precompile_headers(${EXENAME} REUSE_FROM jkqtptest_simpletest)
+endif (JKQtPlotter_BUILD_WITH_PRECOMPILED_HEADERS)
 
 
 # Installation

examples/imageplot/CMakeLists.txt

@@ -16,14 +16,16 @@ add_executable(${EXENAME} WIN32 ${SOURCES} ${HEADERS} ${RESOURCES} ${UIS})
 target_include_directories(${EXENAME} PRIVATE ../../lib)
 if(JKQtPlotter_BUILD_STATIC_LIBS)
     target_link_libraries(${EXENAME} JKQTPlotterLib)
-    # precomiled headers to speed up compilation
+
-    target_precompile_headers(${EXENAME} PRIVATE ../../lib/jkqtplotter/private/jkqtplotter_precomp.h)
 elseif(JKQtPlotter_BUILD_SHARED_LIBS)
     target_link_libraries(${EXENAME} JKQTPlotterSharedLib)
-    # precomiled headers to speed up compilation
+
-    target_precompile_headers(${EXENAME} PRIVATE ../../lib/jkqtplotter/private/jkqtplotter_precomp.h)
 endif()
 
+# precomiled headers to speed up compilation
+if (JKQtPlotter_BUILD_WITH_PRECOMPILED_HEADERS)
+  target_precompile_headers(${EXENAME} REUSE_FROM jkqtptest_simpletest)
+endif (JKQtPlotter_BUILD_WITH_PRECOMPILED_HEADERS)
 
 
 # Installation

examples/imageplot_cimg/CMakeLists.txt

@@ -22,6 +22,11 @@ if(CImg_FOUND)
     endif()
     target_link_libraries(${EXENAME} CImg::CImg)
 
+    # precomiled headers to speed up compilation
+    if (JKQtPlotter_BUILD_WITH_PRECOMPILED_HEADERS)
+      target_precompile_headers(${EXENAME} REUSE_FROM jkqtptest_simpletest)
+    endif (JKQtPlotter_BUILD_WITH_PRECOMPILED_HEADERS)
+
     # Installation
     install(TARGETS ${EXENAME} RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR})
 

examples/imageplot_modifier/CMakeLists.txt

@@ -16,14 +16,16 @@ add_executable(${EXENAME} WIN32 ${SOURCES} ${HEADERS} ${RESOURCES} ${UIS})
 target_include_directories(${EXENAME} PRIVATE ../../lib)
 if(JKQtPlotter_BUILD_STATIC_LIBS)
     target_link_libraries(${EXENAME} JKQTPlotterLib)
-    # precomiled headers to speed up compilation
+
-    target_precompile_headers(${EXENAME} PRIVATE ../../lib/jkqtplotter/private/jkqtplotter_precomp.h)
 elseif(JKQtPlotter_BUILD_SHARED_LIBS)
     target_link_libraries(${EXENAME} JKQTPlotterSharedLib)
-    # precomiled headers to speed up compilation
+
-    target_precompile_headers(${EXENAME} PRIVATE ../../lib/jkqtplotter/private/jkqtplotter_precomp.h)
 endif()
 
+# precomiled headers to speed up compilation
+if (JKQtPlotter_BUILD_WITH_PRECOMPILED_HEADERS)
+  target_precompile_headers(${EXENAME} REUSE_FROM jkqtptest_simpletest)
+endif (JKQtPlotter_BUILD_WITH_PRECOMPILED_HEADERS)
 
 
 # Installation

examples/imageplot_nodatastore/CMakeLists.txt

@@ -16,14 +16,16 @@ add_executable(${EXENAME} WIN32 ${SOURCES} ${HEADERS} ${RESOURCES} ${UIS})
 target_include_directories(${EXENAME} PRIVATE ../../lib)
 if(JKQtPlotter_BUILD_STATIC_LIBS)
     target_link_libraries(${EXENAME} JKQTPlotterLib)
-    # precomiled headers to speed up compilation
+
-    target_precompile_headers(${EXENAME} PRIVATE ../../lib/jkqtplotter/private/jkqtplotter_precomp.h)
 elseif(JKQtPlotter_BUILD_SHARED_LIBS)
     target_link_libraries(${EXENAME} JKQTPlotterSharedLib)
-    # precomiled headers to speed up compilation
+
-    target_precompile_headers(${EXENAME} PRIVATE ../../lib/jkqtplotter/private/jkqtplotter_precomp.h)
 endif()
 
+# precomiled headers to speed up compilation
+if (JKQtPlotter_BUILD_WITH_PRECOMPILED_HEADERS)
+  target_precompile_headers(${EXENAME} REUSE_FROM jkqtptest_simpletest)
+endif (JKQtPlotter_BUILD_WITH_PRECOMPILED_HEADERS)
 
 
 # Installation

examples/imageplot_opencv/CMakeLists.txt

@@ -23,6 +23,11 @@ if(OpenCV_FOUND)
     include_directories(${EXENAME}  ${OpenCV_INCLUDE_DIRS} )
     target_link_libraries(${EXENAME} ${OpenCV_LIBS} )
 
+    # precomiled headers to speed up compilation
+    if (JKQtPlotter_BUILD_WITH_PRECOMPILED_HEADERS)
+      target_precompile_headers(${EXENAME} REUSE_FROM jkqtptest_simpletest)
+    endif (JKQtPlotter_BUILD_WITH_PRECOMPILED_HEADERS)
+
     # Installation
     install(TARGETS ${EXENAME} RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR})
     

examples/imageplot_userpal/CMakeLists.txt

@@ -16,14 +16,16 @@ add_executable(${EXENAME} WIN32 ${SOURCES} ${HEADERS} ${RESOURCES} ${UIS})
 target_include_directories(${EXENAME} PRIVATE ../../lib)
 if(JKQtPlotter_BUILD_STATIC_LIBS)
     target_link_libraries(${EXENAME} JKQTPlotterLib)
-    # precomiled headers to speed up compilation
+
-    target_precompile_headers(${EXENAME} PRIVATE ../../lib/jkqtplotter/private/jkqtplotter_precomp.h)
 elseif(JKQtPlotter_BUILD_SHARED_LIBS)
     target_link_libraries(${EXENAME} JKQTPlotterSharedLib)
-    # precomiled headers to speed up compilation
+
-    target_precompile_headers(${EXENAME} PRIVATE ../../lib/jkqtplotter/private/jkqtplotter_precomp.h)
 endif()
 
+# precomiled headers to speed up compilation
+if (JKQtPlotter_BUILD_WITH_PRECOMPILED_HEADERS)
+  target_precompile_headers(${EXENAME} REUSE_FROM jkqtptest_simpletest)
+endif (JKQtPlotter_BUILD_WITH_PRECOMPILED_HEADERS)
 
 
 # Installation

examples/impulsesplot/CMakeLists.txt

@@ -16,14 +16,16 @@ add_executable(${EXENAME} WIN32 ${SOURCES} ${HEADERS} ${RESOURCES} ${UIS})
 target_include_directories(${EXENAME} PRIVATE ../../lib)
 if(JKQtPlotter_BUILD_STATIC_LIBS)
     target_link_libraries(${EXENAME} JKQTPlotterLib)
-    # precomiled headers to speed up compilation
+
-    target_precompile_headers(${EXENAME} PRIVATE ../../lib/jkqtplotter/private/jkqtplotter_precomp.h)
 elseif(JKQtPlotter_BUILD_SHARED_LIBS)
     target_link_libraries(${EXENAME} JKQTPlotterSharedLib)
-    # precomiled headers to speed up compilation
+
-    target_precompile_headers(${EXENAME} PRIVATE ../../lib/jkqtplotter/private/jkqtplotter_precomp.h)
 endif()
 
+# precomiled headers to speed up compilation
+if (JKQtPlotter_BUILD_WITH_PRECOMPILED_HEADERS)
+  target_precompile_headers(${EXENAME} REUSE_FROM jkqtptest_simpletest)
+endif (JKQtPlotter_BUILD_WITH_PRECOMPILED_HEADERS)
 
 
 # Installation

examples/jkqtplot_test/CMakeLists.txt

@@ -26,14 +26,16 @@ add_executable(${EXENAME} WIN32 ${SOURCES}  ${HEADERS} ${RESOURCES} ${UIS})
 target_include_directories(${EXENAME} PRIVATE ../../lib)
 if(JKQtPlotter_BUILD_STATIC_LIBS)
     target_link_libraries(${EXENAME} JKQTPlotterLib)
-    # precomiled headers to speed up compilation
+
-    target_precompile_headers(${EXENAME} PRIVATE ../../lib/jkqtplotter/private/jkqtplotter_precomp.h)
 elseif(JKQtPlotter_BUILD_SHARED_LIBS)
     target_link_libraries(${EXENAME} JKQTPlotterSharedLib)
-    # precomiled headers to speed up compilation
+
-    target_precompile_headers(${EXENAME} PRIVATE ../../lib/jkqtplotter/private/jkqtplotter_precomp.h)
 endif()
 
+# precomiled headers to speed up compilation
+if (JKQtPlotter_BUILD_WITH_PRECOMPILED_HEADERS)
+  target_precompile_headers(${EXENAME} REUSE_FROM jkqtptest_simpletest)
+endif (JKQtPlotter_BUILD_WITH_PRECOMPILED_HEADERS)
 
 
 # Installation

examples/logaxes/CMakeLists.txt

@@ -16,14 +16,16 @@ add_executable(${EXENAME} WIN32 ${SOURCES} ${HEADERS} ${RESOURCES} ${UIS})
 target_include_directories(${EXENAME} PRIVATE ../../lib)
 if(JKQtPlotter_BUILD_STATIC_LIBS)
     target_link_libraries(${EXENAME} JKQTPlotterLib)
-    # precomiled headers to speed up compilation
+
-    target_precompile_headers(${EXENAME} PRIVATE ../../lib/jkqtplotter/private/jkqtplotter_precomp.h)
 elseif(JKQtPlotter_BUILD_SHARED_LIBS)
     target_link_libraries(${EXENAME} JKQTPlotterSharedLib)
-    # precomiled headers to speed up compilation
+
-    target_precompile_headers(${EXENAME} PRIVATE ../../lib/jkqtplotter/private/jkqtplotter_precomp.h)
 endif()
 
+# precomiled headers to speed up compilation
+if (JKQtPlotter_BUILD_WITH_PRECOMPILED_HEADERS)
+  target_precompile_headers(${EXENAME} REUSE_FROM jkqtptest_simpletest)
+endif (JKQtPlotter_BUILD_WITH_PRECOMPILED_HEADERS)
 
 
 # Installation

examples/mandelbrot/CMakeLists.txt

@@ -17,15 +17,17 @@ add_executable(${EXENAME} WIN32 ${SOURCES} ${HEADERS} ${RESOURCES} ${UIS})
 target_include_directories(${EXENAME} PRIVATE ../../lib)
 if(JKQtPlotter_BUILD_STATIC_LIBS)
     target_link_libraries(${EXENAME} JKQTPlotterLib)
-    # precomiled headers to speed up compilation
+
-    target_precompile_headers(${EXENAME} PRIVATE ../../lib/jkqtplotter/private/jkqtplotter_precomp.h)
 elseif(JKQtPlotter_BUILD_SHARED_LIBS)
     target_link_libraries(${EXENAME} JKQTPlotterSharedLib)
-    # precomiled headers to speed up compilation
+
-    target_precompile_headers(${EXENAME} PRIVATE ../../lib/jkqtplotter/private/jkqtplotter_precomp.h)
 endif()
 target_link_libraries(${EXENAME} Threads::Threads)
 
+# precomiled headers to speed up compilation
+if (JKQtPlotter_BUILD_WITH_PRECOMPILED_HEADERS)
+  target_precompile_headers(${EXENAME} REUSE_FROM jkqtptest_simpletest)
+endif (JKQtPlotter_BUILD_WITH_PRECOMPILED_HEADERS)
 
 # Installation
 install(TARGETS ${EXENAME} RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR})

examples/multiplot/CMakeLists.txt

@@ -16,14 +16,16 @@ add_executable(${EXENAME} WIN32 ${SOURCES} ${HEADERS} ${RESOURCES} ${UIS})
 target_include_directories(${EXENAME} PRIVATE ../../lib)
 if(JKQtPlotter_BUILD_STATIC_LIBS)
     target_link_libraries(${EXENAME} JKQTPlotterLib)
-    # precomiled headers to speed up compilation
+
-    target_precompile_headers(${EXENAME} PRIVATE ../../lib/jkqtplotter/private/jkqtplotter_precomp.h)
 elseif(JKQtPlotter_BUILD_SHARED_LIBS)
     target_link_libraries(${EXENAME} JKQTPlotterSharedLib)
-    # precomiled headers to speed up compilation
+
-    target_precompile_headers(${EXENAME} PRIVATE ../../lib/jkqtplotter/private/jkqtplotter_precomp.h)
 endif()
 
+# precomiled headers to speed up compilation
+if (JKQtPlotter_BUILD_WITH_PRECOMPILED_HEADERS)
+  target_precompile_headers(${EXENAME} REUSE_FROM jkqtptest_simpletest)
+endif (JKQtPlotter_BUILD_WITH_PRECOMPILED_HEADERS)
 
 
 # Installation

examples/parametriccurve/CMakeLists.txt

@@ -16,14 +16,16 @@ add_executable(${EXENAME} WIN32 ${SOURCES} ${HEADERS} ${RESOURCES} ${UIS})
 target_include_directories(${EXENAME} PRIVATE ../../lib)
 if(JKQtPlotter_BUILD_STATIC_LIBS)
     target_link_libraries(${EXENAME} JKQTPlotterLib)
-    # precomiled headers to speed up compilation
+
-    target_precompile_headers(${EXENAME} PRIVATE ../../lib/jkqtplotter/private/jkqtplotter_precomp.h)
 elseif(JKQtPlotter_BUILD_SHARED_LIBS)
     target_link_libraries(${EXENAME} JKQTPlotterSharedLib)
-    # precomiled headers to speed up compilation
+
-    target_precompile_headers(${EXENAME} PRIVATE ../../lib/jkqtplotter/private/jkqtplotter_precomp.h)
 endif()
 
+# precomiled headers to speed up compilation
+if (JKQtPlotter_BUILD_WITH_PRECOMPILED_HEADERS)
+  target_precompile_headers(${EXENAME} REUSE_FROM jkqtptest_simpletest)
+endif (JKQtPlotter_BUILD_WITH_PRECOMPILED_HEADERS)
 
 
 # Installation

examples/paramscatterplot/CMakeLists.txt

@@ -16,14 +16,16 @@ add_executable(${EXENAME} WIN32 ${SOURCES} ${HEADERS} ${RESOURCES} ${UIS})
 target_include_directories(${EXENAME} PRIVATE ../../lib)
 if(JKQtPlotter_BUILD_STATIC_LIBS)
     target_link_libraries(${EXENAME} JKQTPlotterLib)
-    # precomiled headers to speed up compilation
+
-    target_precompile_headers(${EXENAME} PRIVATE ../../lib/jkqtplotter/private/jkqtplotter_precomp.h)
 elseif(JKQtPlotter_BUILD_SHARED_LIBS)
     target_link_libraries(${EXENAME} JKQTPlotterSharedLib)
-    # precomiled headers to speed up compilation
+
-    target_precompile_headers(${EXENAME} PRIVATE ../../lib/jkqtplotter/private/jkqtplotter_precomp.h)
 endif()
 
+# precomiled headers to speed up compilation
+if (JKQtPlotter_BUILD_WITH_PRECOMPILED_HEADERS)
+  target_precompile_headers(${EXENAME} REUSE_FROM jkqtptest_simpletest)
+endif (JKQtPlotter_BUILD_WITH_PRECOMPILED_HEADERS)
 
 
 # Installation

examples/paramscatterplot_image/CMakeLists.txt

@@ -16,14 +16,16 @@ add_executable(${EXENAME} WIN32 ${SOURCES} ${HEADERS} ${RESOURCES} ${UIS})
 target_include_directories(${EXENAME} PRIVATE ../../lib)
 if(JKQtPlotter_BUILD_STATIC_LIBS)
     target_link_libraries(${EXENAME} JKQTPlotterLib)
-    # precomiled headers to speed up compilation
+
-    target_precompile_headers(${EXENAME} PRIVATE ../../lib/jkqtplotter/private/jkqtplotter_precomp.h)
 elseif(JKQtPlotter_BUILD_SHARED_LIBS)
     target_link_libraries(${EXENAME} JKQTPlotterSharedLib)
-    # precomiled headers to speed up compilation
+
-    target_precompile_headers(${EXENAME} PRIVATE ../../lib/jkqtplotter/private/jkqtplotter_precomp.h)
 endif()
 
+# precomiled headers to speed up compilation
+if (JKQtPlotter_BUILD_WITH_PRECOMPILED_HEADERS)
+  target_precompile_headers(${EXENAME} REUSE_FROM jkqtptest_simpletest)
+endif (JKQtPlotter_BUILD_WITH_PRECOMPILED_HEADERS)
 
 
 # Installation

examples/parsedfunctionplot/CMakeLists.txt

@@ -16,14 +16,16 @@ add_executable(${EXENAME} WIN32 ${SOURCES} ${HEADERS} ${RESOURCES} ${UIS})
 target_include_directories(${EXENAME} PRIVATE ../../lib)
 if(JKQtPlotter_BUILD_STATIC_LIBS)
     target_link_libraries(${EXENAME} JKQTPlotterLib)
-    # precomiled headers to speed up compilation
+
-    target_precompile_headers(${EXENAME} PRIVATE ../../lib/jkqtplotter/private/jkqtplotter_precomp.h)
 elseif(JKQtPlotter_BUILD_SHARED_LIBS)
     target_link_libraries(${EXENAME} JKQTPlotterSharedLib)
-    # precomiled headers to speed up compilation
+
-    target_precompile_headers(${EXENAME} PRIVATE ../../lib/jkqtplotter/private/jkqtplotter_precomp.h)
 endif()
 
+# precomiled headers to speed up compilation
+if (JKQtPlotter_BUILD_WITH_PRECOMPILED_HEADERS)
+  target_precompile_headers(${EXENAME} REUSE_FROM jkqtptest_simpletest)
+endif (JKQtPlotter_BUILD_WITH_PRECOMPILED_HEADERS)
 
 
 # Installation

examples/rgbimageplot/CMakeLists.txt

@@ -16,14 +16,16 @@ add_executable(${EXENAME} WIN32 ${SOURCES} ${HEADERS} ${RESOURCES} ${UIS})
 target_include_directories(${EXENAME} PRIVATE ../../lib)
 if(JKQtPlotter_BUILD_STATIC_LIBS)
     target_link_libraries(${EXENAME} JKQTPlotterLib)
-    # precomiled headers to speed up compilation
+
-    target_precompile_headers(${EXENAME} PRIVATE ../../lib/jkqtplotter/private/jkqtplotter_precomp.h)
 elseif(JKQtPlotter_BUILD_SHARED_LIBS)
     target_link_libraries(${EXENAME} JKQTPlotterSharedLib)
-    # precomiled headers to speed up compilation
+
-    target_precompile_headers(${EXENAME} PRIVATE ../../lib/jkqtplotter/private/jkqtplotter_precomp.h)
 endif()
 
+# precomiled headers to speed up compilation
+if (JKQtPlotter_BUILD_WITH_PRECOMPILED_HEADERS)
+  target_precompile_headers(${EXENAME} REUSE_FROM jkqtptest_simpletest)
+endif (JKQtPlotter_BUILD_WITH_PRECOMPILED_HEADERS)
 
 
 # Installation

examples/rgbimageplot_cimg/CMakeLists.txt

@@ -22,6 +22,11 @@ if(CImg_FOUND)
     endif()
     target_link_libraries(${EXENAME} CImg::CImg)
 
+    # precomiled headers to speed up compilation
+    if (JKQtPlotter_BUILD_WITH_PRECOMPILED_HEADERS)
+      target_precompile_headers(${EXENAME} REUSE_FROM jkqtptest_simpletest)
+    endif (JKQtPlotter_BUILD_WITH_PRECOMPILED_HEADERS)
+
     # Installation
     install(TARGETS ${EXENAME} RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR})
  

examples/rgbimageplot_opencv/CMakeLists.txt

@@ -23,6 +23,11 @@ if (OpenCV_FOUND)
         include_directories(${EXENAME} ${OpenCV_INCLUDE_DIRS} )
         target_link_libraries(${EXENAME} ${OpenCV_LIBS} )
 
+        # precomiled headers to speed up compilation
+        if (JKQtPlotter_BUILD_WITH_PRECOMPILED_HEADERS)
+          target_precompile_headers(${EXENAME} REUSE_FROM jkqtptest_simpletest)
+        endif (JKQtPlotter_BUILD_WITH_PRECOMPILED_HEADERS)
+
 
         # Installation
         install(TARGETS ${EXENAME} RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR})

examples/rgbimageplot_qt/CMakeLists.txt

@@ -16,14 +16,16 @@ add_executable(${EXENAME} WIN32 ${SOURCES} ${HEADERS} ${RESOURCES} ${UIS})
 target_include_directories(${EXENAME} PRIVATE ../../lib)
 if(JKQtPlotter_BUILD_STATIC_LIBS)
     target_link_libraries(${EXENAME} JKQTPlotterLib)
-    # precomiled headers to speed up compilation
+
-    target_precompile_headers(${EXENAME} PRIVATE ../../lib/jkqtplotter/private/jkqtplotter_precomp.h)
 elseif(JKQtPlotter_BUILD_SHARED_LIBS)
     target_link_libraries(${EXENAME} JKQTPlotterSharedLib)
-    # precomiled headers to speed up compilation
+
-    target_precompile_headers(${EXENAME} PRIVATE ../../lib/jkqtplotter/private/jkqtplotter_precomp.h)
 endif()
 
+# precomiled headers to speed up compilation
+if (JKQtPlotter_BUILD_WITH_PRECOMPILED_HEADERS)
+  target_precompile_headers(${EXENAME} REUSE_FROM jkqtptest_simpletest)
+endif (JKQtPlotter_BUILD_WITH_PRECOMPILED_HEADERS)
 
 
 # Installation

examples/simpletest/CMakeLists.txt

@@ -16,14 +16,14 @@ add_executable(${EXENAME} WIN32 ${SOURCES} ${HEADERS} ${RESOURCES} ${UIS})
 target_include_directories(${EXENAME} PRIVATE ../../lib)
 if(JKQtPlotter_BUILD_STATIC_LIBS)
     target_link_libraries(${EXENAME} JKQTPlotterLib)
-    # precomiled headers to speed up compilation
+
-    target_precompile_headers(${EXENAME} PRIVATE ../../lib/jkqtplotter/private/jkqtplotter_precomp.h)
 elseif(JKQtPlotter_BUILD_SHARED_LIBS)
     target_link_libraries(${EXENAME} JKQTPlotterSharedLib)
-    # precomiled headers to speed up compilation
+
-    target_precompile_headers(${EXENAME} PRIVATE ../../lib/jkqtplotter/private/jkqtplotter_precomp.h)
 endif()
 
+# precomiled headers to speed up compilation
+target_precompile_headers(${EXENAME} PRIVATE ../../lib/jkqtplotter/private/jkqtplotter_precomp.h)
 
 
 # Installation

examples/speed/CMakeLists.txt

@@ -16,14 +16,17 @@ add_executable(${EXENAME} WIN32 ${SOURCES} ${HEADERS} ${RESOURCES} ${UIS})
 target_include_directories(${EXENAME} PRIVATE ../../lib)
 if(JKQtPlotter_BUILD_STATIC_LIBS)
     target_link_libraries(${EXENAME} JKQTPlotterLib)
-    # precomiled headers to speed up compilation
+
-    target_precompile_headers(${EXENAME} PRIVATE ../../lib/jkqtplotter/private/jkqtplotter_precomp.h)
 elseif(JKQtPlotter_BUILD_SHARED_LIBS)
     target_link_libraries(${EXENAME} JKQTPlotterSharedLib)
-    # precomiled headers to speed up compilation
+
-    target_precompile_headers(${EXENAME} PRIVATE ../../lib/jkqtplotter/private/jkqtplotter_precomp.h)
 endif()
 
+# precomiled headers to speed up compilation
+if (JKQtPlotter_BUILD_WITH_PRECOMPILED_HEADERS)
+  target_precompile_headers(${EXENAME} REUSE_FROM jkqtptest_simpletest)
+endif (JKQtPlotter_BUILD_WITH_PRECOMPILED_HEADERS)
+
 
 
 # Installation

examples/stackedbars/CMakeLists.txt

@@ -16,14 +16,17 @@ add_executable(${EXENAME} WIN32 ${SOURCES} ${HEADERS} ${RESOURCES} ${UIS})
 target_include_directories(${EXENAME} PRIVATE ../../lib)
 if(JKQtPlotter_BUILD_STATIC_LIBS)
     target_link_libraries(${EXENAME} JKQTPlotterLib)
-    # precomiled headers to speed up compilation
+
-    target_precompile_headers(${EXENAME} PRIVATE ../../lib/jkqtplotter/private/jkqtplotter_precomp.h)
 elseif(JKQtPlotter_BUILD_SHARED_LIBS)
     target_link_libraries(${EXENAME} JKQTPlotterSharedLib)
-    # precomiled headers to speed up compilation
+
-    target_precompile_headers(${EXENAME} PRIVATE ../../lib/jkqtplotter/private/jkqtplotter_precomp.h)
 endif()
 
+# precomiled headers to speed up compilation
+if (JKQtPlotter_BUILD_WITH_PRECOMPILED_HEADERS)
+  target_precompile_headers(${EXENAME} REUSE_FROM jkqtptest_simpletest)
+endif (JKQtPlotter_BUILD_WITH_PRECOMPILED_HEADERS)
+
 
 
 # Installation

examples/stepplots/CMakeLists.txt

@@ -16,14 +16,17 @@ add_executable(${EXENAME} WIN32 ${SOURCES} ${HEADERS} ${RESOURCES} ${UIS})
 target_include_directories(${EXENAME} PRIVATE ../../lib)
 if(JKQtPlotter_BUILD_STATIC_LIBS)
     target_link_libraries(${EXENAME} JKQTPlotterLib)
-    # precomiled headers to speed up compilation
+
-    target_precompile_headers(${EXENAME} PRIVATE ../../lib/jkqtplotter/private/jkqtplotter_precomp.h)
 elseif(JKQtPlotter_BUILD_SHARED_LIBS)
     target_link_libraries(${EXENAME} JKQTPlotterSharedLib)
-    # precomiled headers to speed up compilation
+
-    target_precompile_headers(${EXENAME} PRIVATE ../../lib/jkqtplotter/private/jkqtplotter_precomp.h)
 endif()
 
+# precomiled headers to speed up compilation
+if (JKQtPlotter_BUILD_WITH_PRECOMPILED_HEADERS)
+  target_precompile_headers(${EXENAME} REUSE_FROM jkqtptest_simpletest)
+endif (JKQtPlotter_BUILD_WITH_PRECOMPILED_HEADERS)
+
 
 
 # Installation

examples/styledboxplot/CMakeLists.txt

@@ -16,14 +16,17 @@ add_executable(${EXENAME} WIN32 ${SOURCES} ${HEADERS} ${RESOURCES} ${UIS})
 target_include_directories(${EXENAME} PRIVATE ../../lib)
 if(JKQtPlotter_BUILD_STATIC_LIBS)
     target_link_libraries(${EXENAME} JKQTPlotterLib)
-    # precomiled headers to speed up compilation
+
-    target_precompile_headers(${EXENAME} PRIVATE ../../lib/jkqtplotter/private/jkqtplotter_precomp.h)
 elseif(JKQtPlotter_BUILD_SHARED_LIBS)
     target_link_libraries(${EXENAME} JKQTPlotterSharedLib)
-    # precomiled headers to speed up compilation
+
-    target_precompile_headers(${EXENAME} PRIVATE ../../lib/jkqtplotter/private/jkqtplotter_precomp.h)
 endif()
 
+# precomiled headers to speed up compilation
+if (JKQtPlotter_BUILD_WITH_PRECOMPILED_HEADERS)
+  target_precompile_headers(${EXENAME} REUSE_FROM jkqtptest_simpletest)
+endif (JKQtPlotter_BUILD_WITH_PRECOMPILED_HEADERS)
+
 
 
 # Installation

examples/styling/CMakeLists.txt

@@ -16,14 +16,17 @@ add_executable(${EXENAME} WIN32 ${SOURCES} ${HEADERS} ${RESOURCES} ${UIS})
 target_include_directories(${EXENAME} PRIVATE ../../lib)
 if(JKQtPlotter_BUILD_STATIC_LIBS)
     target_link_libraries(${EXENAME} JKQTPlotterLib)
-    # precomiled headers to speed up compilation
+
-    target_precompile_headers(${EXENAME} PRIVATE ../../lib/jkqtplotter/private/jkqtplotter_precomp.h)
 elseif(JKQtPlotter_BUILD_SHARED_LIBS)
     target_link_libraries(${EXENAME} JKQTPlotterSharedLib)
-    # precomiled headers to speed up compilation
+
-    target_precompile_headers(${EXENAME} PRIVATE ../../lib/jkqtplotter/private/jkqtplotter_precomp.h)
 endif()
 
+# precomiled headers to speed up compilation
+if (JKQtPlotter_BUILD_WITH_PRECOMPILED_HEADERS)
+  target_precompile_headers(${EXENAME} REUSE_FROM jkqtptest_simpletest)
+endif (JKQtPlotter_BUILD_WITH_PRECOMPILED_HEADERS)
+
 
 
 # Installation

examples/symbols_and_errors/CMakeLists.txt

@@ -16,14 +16,17 @@ add_executable(${EXENAME} WIN32 ${SOURCES} ${HEADERS} ${RESOURCES} ${UIS})
 target_include_directories(${EXENAME} PRIVATE ../../lib)
 if(JKQtPlotter_BUILD_STATIC_LIBS)
     target_link_libraries(${EXENAME} JKQTPlotterLib)
-    # precomiled headers to speed up compilation
+
-    target_precompile_headers(${EXENAME} PRIVATE ../../lib/jkqtplotter/private/jkqtplotter_precomp.h)
 elseif(JKQtPlotter_BUILD_SHARED_LIBS)
     target_link_libraries(${EXENAME} JKQTPlotterSharedLib)
-    # precomiled headers to speed up compilation
+
-    target_precompile_headers(${EXENAME} PRIVATE ../../lib/jkqtplotter/private/jkqtplotter_precomp.h)
 endif()
 
+# precomiled headers to speed up compilation
+if (JKQtPlotter_BUILD_WITH_PRECOMPILED_HEADERS)
+  target_precompile_headers(${EXENAME} REUSE_FROM jkqtptest_simpletest)
+endif (JKQtPlotter_BUILD_WITH_PRECOMPILED_HEADERS)
+
 
 
 # Installation

examples/symbols_and_styles/CMakeLists.txt

@@ -16,14 +16,17 @@ add_executable(${EXENAME} WIN32 ${SOURCES} ${HEADERS} ${RESOURCES} ${UIS})
 target_include_directories(${EXENAME} PRIVATE ../../lib)
 if(JKQtPlotter_BUILD_STATIC_LIBS)
     target_link_libraries(${EXENAME} JKQTPlotterLib)
-    # precomiled headers to speed up compilation
+
-    target_precompile_headers(${EXENAME} PRIVATE ../../lib/jkqtplotter/private/jkqtplotter_precomp.h)
 elseif(JKQtPlotter_BUILD_SHARED_LIBS)
     target_link_libraries(${EXENAME} JKQTPlotterSharedLib)
-    # precomiled headers to speed up compilation
+
-    target_precompile_headers(${EXENAME} PRIVATE ../../lib/jkqtplotter/private/jkqtplotter_precomp.h)
 endif()
 
+# precomiled headers to speed up compilation
+if (JKQtPlotter_BUILD_WITH_PRECOMPILED_HEADERS)
+  target_precompile_headers(${EXENAME} REUSE_FROM jkqtptest_simpletest)
+endif (JKQtPlotter_BUILD_WITH_PRECOMPILED_HEADERS)
+
 
 
 # Installation

examples/ui/CMakeLists.txt

@@ -16,14 +16,17 @@ add_executable(${EXENAME} WIN32 ${SOURCES} ${HEADERS} ${RESOURCES} ${UIS})
 target_include_directories(${EXENAME} PRIVATE ../../lib)
 if(JKQtPlotter_BUILD_STATIC_LIBS)
     target_link_libraries(${EXENAME} JKQTPlotterLib)
-    # precomiled headers to speed up compilation
+
-    target_precompile_headers(${EXENAME} PRIVATE ../../lib/jkqtplotter/private/jkqtplotter_precomp.h)
 elseif(JKQtPlotter_BUILD_SHARED_LIBS)
     target_link_libraries(${EXENAME} JKQTPlotterSharedLib)
-    # precomiled headers to speed up compilation
+
-    target_precompile_headers(${EXENAME} PRIVATE ../../lib/jkqtplotter/private/jkqtplotter_precomp.h)
 endif()
 
+# precomiled headers to speed up compilation
+if (JKQtPlotter_BUILD_WITH_PRECOMPILED_HEADERS)
+  target_precompile_headers(${EXENAME} REUSE_FROM jkqtptest_simpletest)
+endif (JKQtPlotter_BUILD_WITH_PRECOMPILED_HEADERS)
+
 
 
 # Installation

examples/user_interaction/CMakeLists.txt

@@ -16,14 +16,16 @@ add_executable(${EXENAME} WIN32 ${SOURCES} ${HEADERS} ${RESOURCES} ${UIS})
 target_include_directories(${EXENAME} PRIVATE ../../lib)
 if(JKQtPlotter_BUILD_STATIC_LIBS)
     target_link_libraries(${EXENAME} JKQTPlotterLib)
-    # precomiled headers to speed up compilation
+
-    target_precompile_headers(${EXENAME} PRIVATE ../../lib/jkqtplotter/private/jkqtplotter_precomp.h)
 elseif(JKQtPlotter_BUILD_SHARED_LIBS)
     target_link_libraries(${EXENAME} JKQTPlotterSharedLib)
-    # precomiled headers to speed up compilation
+
-    target_precompile_headers(${EXENAME} PRIVATE ../../lib/jkqtplotter/private/jkqtplotter_precomp.h)
 endif()
 
+# precomiled headers to speed up compilation
+if (JKQtPlotter_BUILD_WITH_PRECOMPILED_HEADERS)
+  target_precompile_headers(${EXENAME} REUSE_FROM jkqtptest_simpletest)
+endif (JKQtPlotter_BUILD_WITH_PRECOMPILED_HEADERS)
 
 
 # Installation

examples/violinplot/CMakeLists.txt

@@ -16,14 +16,16 @@ add_executable(${EXENAME} WIN32 ${SOURCES} ${HEADERS} ${RESOURCES} ${UIS})
 target_include_directories(${EXENAME} PRIVATE ../../lib)
 if(JKQtPlotter_BUILD_STATIC_LIBS)
     target_link_libraries(${EXENAME} JKQTPlotterLib)
-    # precomiled headers to speed up compilation
+
-    target_precompile_headers(${EXENAME} PRIVATE ../../lib/jkqtplotter/private/jkqtplotter_precomp.h)
 elseif(JKQtPlotter_BUILD_SHARED_LIBS)
     target_link_libraries(${EXENAME} JKQTPlotterSharedLib)
-    # precomiled headers to speed up compilation
+
-    target_precompile_headers(${EXENAME} PRIVATE ../../lib/jkqtplotter/private/jkqtplotter_precomp.h)
 endif()
 
+# precomiled headers to speed up compilation
+if (JKQtPlotter_BUILD_WITH_PRECOMPILED_HEADERS)
+  target_precompile_headers(${EXENAME} REUSE_FROM jkqtptest_simpletest)
+endif (JKQtPlotter_BUILD_WITH_PRECOMPILED_HEADERS)
 
 
 # Installation

examples/wiggleplots/CMakeLists.txt

@@ -16,14 +16,17 @@ add_executable(${EXENAME} WIN32 ${SOURCES} ${HEADERS} ${RESOURCES} ${UIS})
 target_include_directories(${EXENAME} PRIVATE ../../lib)
 if(JKQtPlotter_BUILD_STATIC_LIBS)
     target_link_libraries(${EXENAME} JKQTPlotterLib)
-    # precomiled headers to speed up compilation
+
-    target_precompile_headers(${EXENAME} PRIVATE ../../lib/jkqtplotter/private/jkqtplotter_precomp.h)
 elseif(JKQtPlotter_BUILD_SHARED_LIBS)
     target_link_libraries(${EXENAME} JKQTPlotterSharedLib)
-    # precomiled headers to speed up compilation
+
-    target_precompile_headers(${EXENAME} PRIVATE ../../lib/jkqtplotter/private/jkqtplotter_precomp.h)
 endif()
 
+# precomiled headers to speed up compilation
+if (JKQtPlotter_BUILD_WITH_PRECOMPILED_HEADERS)
+  target_precompile_headers(${EXENAME} REUSE_FROM jkqtptest_simpletest)
+endif (JKQtPlotter_BUILD_WITH_PRECOMPILED_HEADERS)
+
 
 
 # Installation

lib/jkqtcommon/CMakeLists.txt

@@ -120,8 +120,10 @@ function(JKQtCommon_setDefaultLibOptions TARGETNAME)
         $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>
     )
     # precomiled headers to speed up compilation
+    if (JKQtPlotter_BUILD_WITH_PRECOMPILED_HEADERS)
       target_precompile_headers(${TARGETNAME} PRIVATE ${CMAKE_CURRENT_LIST_DIR}/private/jkqtcommon_precomp.h)
       target_sources(${TARGETNAME} PRIVATE ${CMAKE_CURRENT_LIST_DIR}/private/jkqtcommon_precomp.h)
+    endif(JKQtPlotter_BUILD_WITH_PRECOMPILED_HEADERS)
 endfunction()
 
 

lib/jkqtmathtext/CMakeLists.txt

@@ -118,8 +118,10 @@ function(JKQtMathText_setDefaultLibOptions TARGETNAME)
     endif(JKQtPlotter_BUILD_INCLUDE_XITS_FONTS)
 
     # precomiled headers to speed up compilation
+    if (JKQtPlotter_BUILD_WITH_PRECOMPILED_HEADERS)
       target_precompile_headers(${TARGETNAME} PRIVATE ${CMAKE_CURRENT_LIST_DIR}/private/jkqtmathtext_precomp.h)
       target_sources(${TARGETNAME} PRIVATE ${CMAKE_CURRENT_LIST_DIR}/private/jkqtmathtext_precomp.h)
+    endif(JKQtPlotter_BUILD_WITH_PRECOMPILED_HEADERS)
 endfunction()
 
 if(JKQtPlotter_BUILD_SHARED_LIBS)

lib/jkqtplotter/CMakeLists.txt

@@ -222,8 +222,10 @@ function(JKQtPlottter_setDefaultLibOptions TARGETNAME)
     )
 
     # precomiled headers to speed up compilation
+    if (JKQtPlotter_BUILD_WITH_PRECOMPILED_HEADERS)
       target_precompile_headers(${TARGETNAME} PRIVATE ${CMAKE_CURRENT_LIST_DIR}/private/jkqtplotter_precomp.h)
       target_sources(${TARGETNAME} PRIVATE ${CMAKE_CURRENT_LIST_DIR}/private/jkqtplotter_precomp.h)
+    endif (JKQtPlotter_BUILD_WITH_PRECOMPILED_HEADERS)
 
 endfunction()