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#
# Amalgamation
#
set(SINGLEHEADER_FILES
${CMAKE_CURRENT_BINARY_DIR}/ada.cpp
${CMAKE_CURRENT_BINARY_DIR}/ada.h
${CMAKE_CURRENT_BINARY_DIR}/ada_c.h
${CMAKE_CURRENT_BINARY_DIR}/demo.cpp
${CMAKE_CURRENT_BINARY_DIR}/demo.c
${CMAKE_CURRENT_BINARY_DIR}/README.md
)
set_source_files_properties(${SINGLEHEADER_FILES} PROPERTIES GENERATED TRUE)
# In theory, this is unneeded, because the tests module does the same test:
find_package (Python3 COMPONENTS Interpreter)
if (Python3_Interpreter_FOUND)
MESSAGE( STATUS "Python found, we are going to amalgamate.py." )
add_custom_command(
OUTPUT ${SINGLEHEADER_FILES}
COMMAND ${CMAKE_COMMAND} -E env
AMALGAMATE_SOURCE_PATH=${PROJECT_SOURCE_DIR}/src
AMALGAMATE_INPUT_PATH=${PROJECT_SOURCE_DIR}/include
AMALGAMATE_OUTPUT_PATH=${CMAKE_CURRENT_BINARY_DIR}
${Python3_EXECUTABLE} ${CMAKE_CURRENT_SOURCE_DIR}/amalgamate.py
#
# This is the best way I could find to make amalgamation trigger whenever source files or
# header files change: since the "ada" library has to get rebuilt when that happens, we
# take a dependency on the generated library file (even though we're not using it). Depending
# on ada-source doesn't do the trick because DEPENDS here can only depend on an
# *artifact*--it won't scan source and include files the way a concrete library or executable
# will.
#
# It sucks that we have to build the actual library to make it happen, but it's better than\
# nothing!
#
DEPENDS amalgamate.py ada
)
add_custom_target(ada-singleheader-files DEPENDS ${SINGLEHEADER_FILES})
#
# Include this if you intend to #include "ada.cpp" in your own .cpp files.
#
add_library(ada-singleheader-include-source INTERFACE)
target_include_directories(ada-singleheader-include-source INTERFACE $<BUILD_INTERFACE:${CMAKE_CURRENT_BINARY_DIR}>)
add_dependencies(ada-singleheader-include-source ada-singleheader-files)
add_library(ada-singleheader-source INTERFACE)
target_sources(ada-singleheader-source INTERFACE $<BUILD_INTERFACE:${CMAKE_CURRENT_BINARY_DIR}/ada.cpp>)
target_link_libraries(ada-singleheader-source INTERFACE ada-singleheader-include-source)
add_library(ada-singleheader-lib STATIC $<BUILD_INTERFACE:${CMAKE_CURRENT_BINARY_DIR}/ada.cpp>)
if (ADA_TESTING)
add_executable(demo $<BUILD_INTERFACE:${CMAKE_CURRENT_BINARY_DIR}/demo.cpp>)
target_link_libraries(demo ada-singleheader-include-source)
add_test(demo demo)
add_executable(cdemo $<BUILD_INTERFACE:${CMAKE_CURRENT_BINARY_DIR}/demo.c>)
target_link_libraries(cdemo ada-singleheader-lib)
add_test(cdemo cdemo)
endif()
else()
MESSAGE( STATUS "Python not found, we are unable to test amalgamate.py." )
endif()
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