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include(CheckCXXCompilerFlag)
# Flatten our header structure
function(flatify target headers)
foreach(header ${headers})
get_filename_component(tgt ${header} NAME)
configure_file(${header} ${target}/${tgt} COPYONLY)
endforeach(header ${headers})
endfunction()
function(add_optional_compile_options flags)
foreach(flag ${flags})
check_cxx_compiler_flag(-${flag} have-compiler-flag:-${flag})
if (have-compiler-flag:-${flag})
add_compile_options("-${flag}")
endif()
endforeach()
endfunction()
# Substitute vendor references in a file
function(add_vendor_file)
set(options)
set(oneValueArgs OUTPUT INPUT MODE)
set(multiValueArgs VARIABLES)
cmake_parse_arguments(AVF "${options}" "${oneValueArgs}" "${multiValueArgs}" ${ARGN})
set(in ${CMAKE_CURRENT_SOURCE_DIR}/${AVF_INPUT})
set(out ${CMAKE_CURRENT_BINARY_DIR}/${AVF_OUTPUT})
add_custom_command(
OUTPUT ${out}
COMMAND ${CMAKE_COMMAND} -DPROJECT_SOURCE_DIR=${PROJECT_SOURCE_DIR}
"-DVARS=${AVF_VARIABLES}"
-DCURRENT_VENDOR=${CURRENT_VENDOR}
-DIN=${in}
-DOUT=${out}
-P ${PROJECT_SOURCE_DIR}/CMake/vendor_substitute.cmake
COMMAND chmod ${AVF_MODE} ${out}
DEPENDS ${in}
${PROJECT_SOURCE_DIR}/doc/apt-verbatim.ent
${PROJECT_SOURCE_DIR}/vendor/${CURRENT_VENDOR}/apt-vendor.ent
${PROJECT_SOURCE_DIR}/vendor/getinfo
${PROJECT_SOURCE_DIR}/CMake/vendor_substitute.cmake
VERBATIM
)
# Woud like to use ${AVF_OUTPUT} as target name, but then ninja gets
# cycles.
add_custom_target(vendor-${AVF_OUTPUT} ALL DEPENDS ${out})
endfunction()
# Add symbolic links to a file
function(add_slaves destination master)
set(slaves "")
foreach(slave ${ARGN})
add_custom_command(OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/${slave}
COMMAND ${CMAKE_COMMAND} -E create_symlink ${master} ${CMAKE_CURRENT_BINARY_DIR}/${slave})
list(APPEND slaves ${CMAKE_CURRENT_BINARY_DIR}/${slave})
endforeach()
STRING(REPLACE "/" "-" master "${master}")
add_custom_target(${master}-slaves ALL DEPENDS ${slaves})
install(FILES ${slaves} DESTINATION ${destination})
endfunction()
# Generates a simple version script versioning everything with current SOVERSION
function(add_version_script target)
#get_target_property(soversion ${target} SOVERSION)
#set(script "${CMAKE_CURRENT_BINARY_DIR}/${target}.versionscript")
#string(REPLACE "-" "" name "${target}_${soversion}")
#string(TOUPPER "${name}" name)
#add_custom_command(OUTPUT "${script}"
# COMMAND echo "${name} {global: *; };" > "${script}"
# VERBATIM )
#add_custom_target(${target}-versionscript DEPENDS "${script}")
#target_link_libraries(${target} PRIVATE -Wl,-version-script="${script}")
#add_dependencies(${target} ${target}-versionscript)
endfunction()
function(path_join out path1 path2)
string(SUBSTRING ${path2} 0 1 init_char)
if ("${init_char}" STREQUAL "/")
set(${out} "${path2}" PARENT_SCOPE)
else()
set(${out} "${path1}/${path2}" PARENT_SCOPE)
endif()
endfunction()
# install_empty_directories(path ...)
#
# Creates empty directories in the install destination dir. Paths may be
# absolute or relative; in the latter case, the value of CMAKE_INSTALL_PREFIX
# is prepended.
function(install_empty_directories)
foreach(path ${ARGN})
path_join(full_path "${CMAKE_INSTALL_PREFIX}" "${path}")
INSTALL(CODE "MESSAGE(STATUS \"Creating directory: \$ENV{DESTDIR}${full_path}\")"
CODE "FILE(MAKE_DIRECTORY \$ENV{DESTDIR}${full_path})")
endforeach()
endfunction()
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