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[CMake] Use an object library to speed up fluid build

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Currently 'fluid' comes as up to three different targets, compiled
from the same source files (fluid, fluid-cmd, and fluid-shared).

The object library is built from all source files except fluid.cxx
and finally all 'fluid*' programs are linked with this library.
This avoids compiling the same source files multiple times.
This commit is contained in:
Albrecht Schlosser 2023-05-07 21:18:52 +02:00
parent 89a2b1a7a8
commit 712fc72fef
1 changed files with 26 additions and 17 deletions
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43
fluid/CMakeLists.txt
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@ -14,6 +14,8 @@
# https://www.fltk.org/bugs.php
#
# Source files for 'fluid-lib' = all source files except fluid.cxx
set (CPPFILES
CodeEditor.cxx
StyleParse.cxx
@ -32,7 +34,6 @@ set (CPPFILES
custom_widgets.cxx
factory.cxx
file.cxx
fluid.cxx
function_panel.cxx
pixmaps.cxx
shell_command.cxx
@ -42,7 +43,7 @@ set (CPPFILES
widget_panel.cxx
)
# also list header files in Apple's Xcode IDE
# List header files in Apple's Xcode IDE
set (HEADERFILES
CodeEditor.h
@ -74,7 +75,7 @@ set (HEADERFILES
widget_panel.h
)
# ExternalCodeEditor: platform specific files
# Add ExternalCodeEditor: platform specific files
if (WIN32)
list (APPEND CPPFILES ExternalCodeEditor_WIN32.cxx)
@ -86,8 +87,16 @@ endif (WIN32)
source_group("Header Files" FILES ${HEADERFILES})
set (FLUID_TARGETS fluid) # fluid and optional fluid-cmd target
set (FLUID_LIBS fltk fltk_images) # libraries used to link fluid executables
# Build a local object library to avoid compiling all source files
# for all fluid targets (fluid, fluid-cmd, fluid-shared). This
# library includes everything except the main program (fluid.cxx).
add_library (fluid-lib OBJECT EXCLUDE_FROM_ALL ${CPPFILES})
# Build fluid with all its variants (fluid-cmd, fluid-shared) ...
set (FLUID_TARGETS fluid) # fluid and optional fluid-cmd target
set (FLUID_LIBS fluid-lib fltk fltk_images) # libraries used to link fluid executables
if (APPLE AND (NOT OPTION_APPLE_X11))
@ -95,7 +104,7 @@ if (APPLE AND (NOT OPTION_APPLE_X11))
set (ICON_NAME fluid.icns)
set (ICON_PATH "${CMAKE_CURRENT_SOURCE_DIR}/icons/${ICON_NAME}")
add_executable (fluid MACOSX_BUNDLE ${CPPFILES} ${HEADERFILES} ${ICON_PATH})
add_executable (fluid MACOSX_BUNDLE fluid.cxx ${HEADERFILES} ${ICON_PATH})
# create macOS bundle wrapper script
@ -111,12 +120,12 @@ if (APPLE AND (NOT OPTION_APPLE_X11))
else ()
# option WIN32 builds a Windows GUI program, ignored on other platforms
add_executable (fluid WIN32 ${CPPFILES} ${HEADERFILES})
# Option 'WIN32' builds a Windows GUI program, ignored on other platforms
add_executable (fluid WIN32 fluid.cxx ${HEADERFILES})
endif ()
# we must link fluid with Cairo if OPTION_CAIRO is enabled
# Link fluid with Cairo if OPTION_CAIRO is enabled
if (FLTK_HAVE_CAIRO)
target_include_directories (fluid PRIVATE ${PKG_CAIRO_INCLUDE_DIRS})
if (PKG_CAIRO_LIBRARY_DIRS)
@ -130,16 +139,16 @@ endif (USE_GDIPLUS)
target_link_libraries (fluid ${FLUID_LIBS})
# Add fluid-cmd console app (Windows only) for converting .fl to .cxx/.h files.
# This is done for all Windows targets, even if cross-compiling.
if (WIN32)
list (APPEND FLUID_TARGETS fluid-cmd)
add_executable (fluid-cmd ${CPPFILES} ${HEADERFILES})
add_executable (fluid-cmd fluid.cxx ${HEADERFILES})
target_link_libraries (fluid-cmd ${FLUID_LIBS})
# we must link fluid-cmd with Cairo if OPTION_CAIRO is enabled (same as above)
# Link fluid-cmd with Cairo if OPTION_CAIRO is enabled (same as above)
if (FLTK_HAVE_CAIRO)
target_include_directories (fluid-cmd PRIVATE ${PKG_CAIRO_INCLUDE_DIRS})
if (PKG_CAIRO_LIBRARY_DIRS)
@ -152,15 +161,15 @@ endif (WIN32)
if (OPTION_BUILD_SHARED_LIBS)
list (APPEND FLUID_TARGETS fluid-shared)
add_executable (fluid-shared ${CPPFILES} ${HEADERFILES})
add_executable (fluid-shared fluid.cxx ${HEADERFILES})
if (MSVC)
target_link_libraries (fluid-shared fltk_SHARED)
target_link_libraries (fluid-shared fluid-lib fltk_SHARED)
else ()
target_link_libraries (fluid-shared fltk_images_SHARED)
target_link_libraries (fluid-shared fluid-lib fltk_images_SHARED)
endif (MSVC)
endif ()
# install fluid GUI and commandline tool
# Install fluid GUI and commandline tool
if (APPLE AND (NOT OPTION_APPLE_X11))
@ -199,7 +208,7 @@ else()
endif (APPLE AND (NOT OPTION_APPLE_X11))
# install desktop files
# Install desktop files
if (UNIX)
install (FILES fluid.desktop