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fltk/CMake/fl_add_library.cmake

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CMake
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#
# Macro used by the CMake build system for the Fast Light Tool Kit (FLTK).
# Originally written by Michael Surette
#
# Copyright 1998-2024 by Bill Spitzak and others.
#
# This library is free software. Distribution and use rights are outlined in
# the file "COPYING" which should have been included with this file. If this
# file is missing or damaged, see the license at:
#
# https://www.fltk.org/COPYING.php
#
# Please see the following page on how to report bugs and issues:
#
# https://www.fltk.org/bugs.php
#
#######################################################################
# fl_add_library - add a static or shared library to the build
#======================================================================
#
# Input:
#
# LIBNAME: name of the library, including 'fltk_' prefix if applicable.
#
# LIBTYPE: either "STATIC" or "SHARED"
#
# SOURCES: Files needed to build the library
#
# Output:
#
# FLTK_LIBRARIES or FLTK_LIBRARIES_SHARED (in parent scope)
#
# This function adds the given library to the build, adds it to
# either FLTK_LIBRARIES or FLTK_LIBRARIES_SHARED, respectively,
# and "exports" the modified variable to the parent scope.
#
# For each library an alias is defined (see comment below).
#
#######################################################################
function(fl_add_library LIBNAME LIBTYPE SOURCES)
# message(STATUS "Building library **************** ${LIBNAME} ${LIBTYPE}")
set(suffix "")
if(LIBTYPE STREQUAL "SHARED")
set(suffix "-shared")
endif()
set(TARGET_NAME ${LIBNAME}${suffix})
## Strip 'fltk_' from target name (if it exists in the name)
## and use the result as EXPORT_NAME property. This makes it
## easy to export library targets fltk::fltk and fltk::images
## rather than fltk::fltk_images.
string(REPLACE "fltk_" "" EXPORT_NAME ${TARGET_NAME})
if(MSVC)
set(OUTPUT_NAME_DEBUG "${LIBNAME}d")
else()
set(OUTPUT_NAME_DEBUG "${LIBNAME}")
endif(MSVC)
set(OUTPUT_NAME_RELEASE "${LIBNAME}")
add_library(${TARGET_NAME} ${LIBTYPE} ${SOURCES})
# Create an alias 'fltk::alias_name' for the library
# where 'alias_name' is the library name without the prefix 'fltk_'
#
# e.g. 'fltk' -> 'fltk::fltk'
# and 'fltk-shared' -> 'fltk::fltk-shared'
# but 'fltk_images' -> 'fltk::images'
# and 'fltk_images-shared' -> 'fltk::images-shared'
if(NOT (LIBNAME STREQUAL "fltk"))
string(REPLACE "fltk_" "" alias_name ${LIBNAME})
else()
set(alias_name ${LIBNAME})
endif()
set(alias_name "fltk::${alias_name}${suffix}")
add_library(${alias_name} ALIAS ${TARGET_NAME})
if(0)
fl_debug_var(TARGET_NAME)
fl_debug_var(LIBTYPE)
fl_debug_var(alias_name)
# fl_debug_var(SOURCES)
endif()
# Target properties for all libraries
# Set 'PRIVATE' target compile definitions for the library
# so they are not inherited by consumers
target_compile_definitions(${TARGET_NAME} PRIVATE "FL_LIBRARY")
# Set PUBLIC include and linker directories
if(0) # DEBUG
message(STATUS "fl_add_library and alias : fltk::${alias_name} ALIAS ${TARGET_NAME}")
fl_debug_var(TARGET_NAME)
fl_debug_var(FLTK_INCLUDE_DIRS)
fl_debug_var(CMAKE_CURRENT_BINARY_DIR)
fl_debug_var(CMAKE_CURRENT_SOURCE_DIR)
fl_debug_var(FLTK_BUILD_INCLUDE_DIRECTORIES)
endif()
# Special handling for the core 'fltk' library,
# no matter if it's SHARED or STATIC
# FIXME: maybe this should be in src/CMakeLists.txt (?)
if(LIBNAME STREQUAL "fltk")
target_include_directories(${TARGET_NAME} PUBLIC
$<BUILD_INTERFACE:${CMAKE_CURRENT_BINARY_DIR}/..>
$<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/..>
$<INSTALL_INTERFACE:include>
)
### FIXME: why does the simplified else() block not work?
### Needs investigation, using 'if(1)' for now...
if(1)
foreach(dir ${FLTK_BUILD_INCLUDE_DIRECTORIES})
target_include_directories(${TARGET_NAME} PRIVATE
$<BUILD_INTERFACE:${dir}>
)
endforeach()
else()
### This generates a wrong string in property INTERFACE_INCLUDE_DIRECTORIES:
### ... $<INSTALL_INTERFACE:include>;/git/fltk/modern-cmake/src/$<BUILD_INTERFACE:/usr/include/freetype2; ...
### ... --- OK ---------------------^^^^^^^ WRONG ^^^^^^^^^^^^^^-------- would be OK -------------------- ...
### End of string: ';/usr/include/libpng16' (WRONG: missing '>')
### I don't see anything wrong with this statement though but
### maybe I'm missing something. Albrecht, Jan 22 2024
target_include_directories(${TARGET_NAME} PRIVATE
$<BUILD_INTERFACE:${FLTK_BUILD_INCLUDE_DIRECTORIES}>
)
endif()
target_link_directories(${TARGET_NAME} PUBLIC
$<BUILD_INTERFACE:${CMAKE_CURRENT_BINARY_DIR}/../lib>
$<INSTALL_INTERFACE:lib>
)
if(APPLE AND NOT FLTK_BACKEND_X11)
foreach(item ${FLTK_COCOA_FRAMEWORKS})
target_link_libraries(${TARGET_NAME} PUBLIC "${item}")
endforeach()
endif()
# we must link fltk with cairo if Cairo or Wayland is enabled (or both)
if(FLTK_HAVE_CAIRO OR FLTK_USE_CAIRO)
target_include_directories(${TARGET_NAME} PUBLIC ${PKG_CAIRO_INCLUDE_DIRS})
target_link_directories (${TARGET_NAME} PUBLIC ${PKG_CAIRO_LIBRARY_DIRS})
target_link_libraries (${TARGET_NAME} PUBLIC ${PKG_CAIRO_LIBRARIES})
endif()
endif(LIBNAME STREQUAL "fltk")
# Set additional target properties for static libraries
if(LIBTYPE STREQUAL "STATIC")
set_target_properties(${TARGET_NAME}
PROPERTIES
OUTPUT_NAME ${LIBNAME}
OUTPUT_NAME_DEBUG ${OUTPUT_NAME_DEBUG}
OUTPUT_NAME_RELEASE ${OUTPUT_NAME_RELEASE}
EXPORT_NAME ${EXPORT_NAME}
)
endif(LIBTYPE STREQUAL "STATIC")
# Set additional target properties for shared (dynamic) libraries (DLL's)
if(LIBTYPE STREQUAL "SHARED")
set_target_properties(${TARGET_NAME} PROPERTIES
VERSION ${FLTK_VERSION}
SOVERSION ${FLTK_VERSION_MAJOR}.${FLTK_VERSION_MINOR}
OUTPUT_NAME ${LIBNAME}
OUTPUT_NAME_DEBUG ${OUTPUT_NAME_DEBUG}
OUTPUT_NAME_RELEASE ${OUTPUT_NAME_RELEASE}
EXPORT_NAME ${EXPORT_NAME}
)
# Visual Studio only:
if(MSVC)
set_target_properties(${TARGET_NAME} PROPERTIES
OUTPUT_NAME ${LIBNAME}_dll
OUTPUT_NAME_DEBUG ${LIBNAME}_dlld
OUTPUT_NAME_RELEASE ${LIBNAME}_dll
)
target_compile_definitions(${TARGET_NAME} PRIVATE FL_DLL)
endif(MSVC)
endif(LIBTYPE STREQUAL "SHARED")
# Debug library output names (optional)
set(DEBUG_ONAME 0)
if(DEBUG_ONAME)
get_target_property(XX_NAME ${TARGET_NAME} NAME)
get_target_property(XX_ONAME ${TARGET_NAME} OUTPUT_NAME)
get_target_property(XX_ONAME_DEBUG ${TARGET_NAME} OUTPUT_NAME_DEBUG)
get_target_property(XX_ONAME_RELEASE ${TARGET_NAME} OUTPUT_NAME_RELEASE)
get_target_property(XX_EXPORT_NAME ${TARGET_NAME} EXPORT_NAME)
message(STATUS "--- DEBUG_ONAME ---")
fl_debug_var(TARGET_NAME)
fl_debug_var(XX_NAME)
fl_debug_var(XX_ONAME)
fl_debug_var(XX_ONAME_DEBUG)
fl_debug_var(XX_ONAME_RELEASE)
fl_debug_var(XX_EXPORT_NAME)
message(STATUS "--- /DEBUG_ONAME ---")
endif(DEBUG_ONAME)
if(MSVC)
if(FLTK_OPTION_LARGE_FILE)
set_target_properties(${TARGET_NAME} PROPERTIES
LINK_FLAGS /LARGEADDRESSAWARE
)
endif(FLTK_OPTION_LARGE_FILE)
endif(MSVC)
install(TARGETS ${TARGET_NAME} EXPORT FLTK-Targets
RUNTIME DESTINATION ${FLTK_BINDIR}
LIBRARY DESTINATION ${FLTK_LIBDIR}
ARCHIVE DESTINATION ${FLTK_LIBDIR}
)
if(LIBTYPE STREQUAL "SHARED")
list(APPEND FLTK_LIBRARIES_SHARED "${TARGET_NAME}")
set(FLTK_LIBRARIES_SHARED "${FLTK_LIBRARIES_SHARED}" PARENT_SCOPE)
else()
list(APPEND FLTK_LIBRARIES "${TARGET_NAME}")
set(FLTK_LIBRARIES "${FLTK_LIBRARIES}" PARENT_SCOPE)
endif()
if(0)
fl_debug_var(fl_add_library_DEBUG)
fl_debug_var(FLTK_LIBRARIES)
fl_debug_var(FLTK_LIBRARIES_SHARED)
fl_debug_var(fl_add_library_END)
message("")
endif()
endfunction(fl_add_library LIBNAME LIBTYPE SOURCES)
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