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cmake_minimum_required(VERSION 3.3.0)
include(CMakeParseArguments)
include(CheckCCompilerFlag)
include(CheckCXXCompilerFlag)
function(addprefix var prefix)
foreach( s ${ARGN} )
list(APPEND tmp "-I${s}")
endforeach()
set(${var} ${tmp} PARENT_SCOPE)
endfunction()
# filter out flags that are not appropriate for the compiler being used
function(target_compile_options_filtered target visibility)
foreach( flag ${ARGN} )
if( flag MATCHES "^-D.*" )
target_compile_options( ${target} ${visibility} ${flag} )
else()
check_c_compiler_flag( ${flag} C_COMPILER_SUPPORTS__${flag} )
if( C_COMPILER_SUPPORTS__${flag} )
target_compile_options( ${target} ${visibility} $<$<COMPILE_LANGUAGE:C>:${flag}> )
endif()
check_cxx_compiler_flag( ${flag} CXX_COMPILER_SUPPORTS__${flag} )
if( CXX_COMPILER_SUPPORTS__${flag} )
target_compile_options( ${target} ${visibility} $<$<COMPILE_LANGUAGE:CXX>:${flag}> )
endif()
endif()
endforeach()
endfunction()
project(abc)
if(READLINE_FOUND MATCHES TRUE)
addprefix(ABC_READLINE_INCLUDES_FLAGS "-I" ${READLINE_INCLUDE})
string(REPLACE ";" " " ABC_READLINE_INCLUDES_FLAGS "${ABC_READLINE_INCLUDES_FLAGS}")
list(APPEND ABC_READLINE_FLAGS "ABC_READLINE_INCLUDES=${ABC_READLINE_INCLUDES_FLAGS}")
string(REPLACE ";" " " ABC_READLINE_LIBRARIES_FLAGS "${READLINE_LIBRARIES}")
list(APPEND ABC_READLINE_FLAGS "ABC_READLINE_LIBRARIES=${ABC_READLINE_LIBRARIES_FLAGS}")
elseif(READLINE_FOUND MATCHES FALSE)
list(APPEND ABC_READLINE_FLAGS "ABC_USE_NO_READLINE=1")
endif()
if(ABC_USE_NAMESPACE)
set(ABC_USE_NAMESPACE_FLAGS "ABC_USE_NAMESPACE=${ABC_USE_NAMESPACE}")
endif()
if( APPLE )
set(make_env ${CMAKE_COMMAND} -E env SDKROOT=${CMAKE_OSX_SYSROOT})
endif()
# run make to extract compiler options, linker options and list of source files
execute_process(
COMMAND
${make_env}
make
${ABC_READLINE_FLAGS}
${ABC_USE_NAMESPACE_FLAGS}
ARCHFLAGS_EXE=${CMAKE_CURRENT_BINARY_DIR}/abc_arch_flags_program.exe
ABC_MAKE_NO_DEPS=1
CC=${CMAKE_C_COMPILER}
CXX=${CMAKE_CXX_COMPILER}
LD=${CMAKE_CXX_COMPILER}
cmake_info
WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
OUTPUT_VARIABLE MAKE_OUTPUT
)
# extract options from make output
function(extract_var SEPARATOR DEST_VARIABLE MAKE_OUTPUT)
string(REGEX MATCH "${SEPARATOR} .* ${SEPARATOR}" TMP "${MAKE_OUTPUT}")
string(REGEX REPLACE "${SEPARATOR} (.*) ${SEPARATOR}" "\\1" TMP "${TMP}")
separate_arguments(TMP)
set(${DEST_VARIABLE} ${TMP} PARENT_SCOPE)
endfunction()
extract_var(SEPARATOR_SRC ABC_SRC ${MAKE_OUTPUT})
extract_var(SEPARATOR_LIBS ABC_LIBS ${MAKE_OUTPUT})
extract_var(SEPARATOR_CFLAGS ABC_CFLAGS ${MAKE_OUTPUT})
extract_var(SEPARATOR_CXXFLAGS ABC_CXXFLAGS ${MAKE_OUTPUT})
if(ABC_USE_NAMESPACE)
set_source_files_properties(${ABC_SRC} PROPERTIES LANGUAGE CXX)
endif()
function(abc_properties target visibility)
target_include_directories(${target} ${visibility} ${CMAKE_CURRENT_SOURCE_DIR}/src )
target_compile_options_filtered(${target} ${visibility} ${ABC_CFLAGS} ${ABC_CXXFLAGS} -Wno-unused-but-set-variable )
target_link_libraries(${target} ${visibility} ${ABC_LIBS})
endfunction()
set(ABC_MAIN_SRC src/base/main/main.c)
list(REMOVE_ITEM ABC_SRC ${ABC_MAIN_SRC})
add_library(libabc EXCLUDE_FROM_ALL ${ABC_SRC})
abc_properties(libabc PUBLIC)
set_property(TARGET libabc PROPERTY OUTPUT_NAME abc)
add_executable(abc ${ABC_MAIN_SRC})
target_link_libraries(abc PRIVATE libabc)
abc_properties(abc PRIVATE)
add_library(libabc-pic EXCLUDE_FROM_ALL ${ABC_SRC})
abc_properties(libabc-pic PUBLIC)
set_property(TARGET libabc-pic PROPERTY POSITION_INDEPENDENT_CODE ON)
set_property(TARGET libabc-pic PROPERTY OUTPUT_NAME abc-pic)
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