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# pkg-config file generation
#
# Uses the following globals:
# - PKG_BUILD_PREFIX: the build location (aka prefix). Defaults to CMAKE_INSTALL_PREFIX
# - PKG_BUILD_LIBDIR: the libdir location. Defaults to ${prefix}/lib.
# - PKG_BUILD_INCLUDEDIR: the includedir location. Defaults to ${prefix}/include.
#
function(pkg_build_config)
set(options)
set(oneValueArgs NAME DESCRIPTION VERSION FILENAME LIBS_SELF)
set(multiValueArgs LIBS PRIVATE_LIBS REQUIRES CFLAGS)
cmake_parse_arguments(PKGCONFIG "${options}" "${oneValueArgs}" "${multiValueArgs}" ${ARGN})
if (NOT DEFINED PKGCONFIG_FILENAME AND DEFINED PKGCONFIG_NAME)
set(PKGCONFIG_FILENAME ${PKGCONFIG_NAME})
endif()
if (NOT DEFINED PKGCONFIG_FILENAME)
message(FATAL_ERROR "Missing FILENAME argument")
endif()
set(PKGCONFIG_FILE "${PROJECT_BINARY_DIR}/${PKGCONFIG_FILENAME}.pc")
if (NOT DEFINED PKGCONFIG_DESCRIPTION)
message(FATAL_ERROR "Missing DESCRIPTION argument")
endif()
if (NOT DEFINED PKGCONFIG_VERSION)
message(FATAL_ERROR "Missing VERSION argument")
endif()
if (DEFINED PKG_BUILD_PREFIX)
set(PKGCONFIG_PREFIX "${PKG_BUILD_PREFIX}")
else()
set(PKGCONFIG_PREFIX "${CMAKE_INSTALL_PREFIX}")
endif()
if(DEFINED PKG_BUILD_LIBDIR)
if (IS_ABSOLUTE ${PKG_BUILD_LIBDIR})
set(PKGCONFIG_LIBDIR ${PKG_BUILD_LIBDIR})
else()
set(PKGCONFIG_LIBDIR "\${prefix}/${PKG_BUILD_LIBDIR}")
endif()
else()
set(PKGCONFIG_LIBDIR "\${prefix}/lib")
endif()
if(DEFINED PKG_BUILD_INCLUDEDIR)
if (IS_ABSOLUTE ${PKG_BUILD_INCLUDEDIR})
set(PKGCONFIG_INCLUDEDIR ${PKG_BUILD_INCLUDEDIR})
else()
set(PKGCONFIG_INCLUDEDIR "\${prefix}/${PKG_BUILD_INCLUDEDIR}")
endif()
else()
set(PKGCONFIG_INCLUDEDIR "\${prefix}/include")
endif()
# Write .pc "header"
file(WRITE "${PKGCONFIG_FILE}"
"prefix=\"${PKGCONFIG_PREFIX}\"\n"
"libdir=\"${PKGCONFIG_LIBDIR}\"\n"
"includedir=\"${PKGCONFIG_INCLUDEDIR}\"\n"
"\n"
"Name: ${PKGCONFIG_NAME}\n"
"Description: ${PKGCONFIG_DESCRIPTION}\n"
"Version: ${PKGCONFIG_VERSION}\n"
)
# Prepare Libs
if(NOT DEFINED PKGCONFIG_LIBS_SELF)
set(PKGCONFIG_LIBS_SELF "${PKGCONFIG_FILE}")
endif()
if(NOT DEFINED PKGCONFIG_LIBS)
set(PKGCONFIG_LIBS "-l${PKGCONFIG_LIBS_SELF}")
else()
list(INSERT PKGCONFIG_LIBS 0 "-l${PKGCONFIG_LIBS_SELF}")
endif()
list(REMOVE_DUPLICATES PKGCONFIG_LIBS)
string(REPLACE ";" " " PKGCONFIG_LIBS "${PKGCONFIG_LIBS}")
file(APPEND "${PKGCONFIG_FILE}" "Libs: -L\${libdir} ${PKGCONFIG_LIBS}\n")
# Prepare Libs.private
if(DEFINED PKGCONFIG_PRIVATE_LIBS)
list(REMOVE_DUPLICATES PKGCONFIG_PRIVATE_LIBS)
string(REPLACE ";" " " PKGCONFIG_PRIVATE_LIBS "${PKGCONFIG_PRIVATE_LIBS}")
file(APPEND "${PKGCONFIG_FILE}" "Libs.private: ${PKGCONFIG_PRIVATE_LIBS}\n")
endif()
# Prepare Requires.private
if(DEFINED PKGCONFIG_REQUIRES)
list(REMOVE_DUPLICATES PKGCONFIG_REQUIRES)
string(REPLACE ";" " " PKGCONFIG_REQUIRES "${PKGCONFIG_REQUIRES}")
file(APPEND "${PKGCONFIG_FILE}" "Requires.private: ${PKGCONFIG_REQUIRES}\n")
endif()
# Prepare Cflags
if(DEFINED PKGCONFIG_CFLAGS)
string(REPLACE ";" " " PKGCONFIG_CFLAGS "${PKGCONFIG_CFLAGS}")
else()
set(PKGCONFIG_CFLAGS "")
endif()
file(APPEND "${PKGCONFIG_FILE}" "Cflags: -I\${includedir} ${PKGCONFIG_CFLAGS}\n")
# Install .pc file
install(FILES "${PKGCONFIG_FILE}"
DESTINATION "${PKGCONFIG_PREFIX}/${PKGCONFIG_LIBDIR}/pkgconfig"
)
endfunction()
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