Files
libgit2/cmake/Modules/PkgBuildConfig.cmake
Patrick Steinhardt 87fc539f2e cmake: use install directories provided via GNUInstallDirs
We currently hand-code logic to configure where to install our artifacts
via the `LIB_INSTALL_DIR`, `INCLUDE_INSTALL_DIR` and `BIN_INSTALL_DIR`
variables. This is reinventing the wheel, as CMake already provide a way
to do that via `CMAKE_INSTALL_<DIR>` paths, e.g. `CMAKE_INSTALL_LIB`.
This requires users of libgit2 to know about the discrepancy and will
require special hacks for any build systems that handle these variables
in an automated way. One such example is Gentoo Linux, which sets up
these paths in both the cmake and cmake-utils eclass.

So let's stop doing that: the GNUInstallDirs module handles it in a
better way for us, especially so as the actual values are dependent on
CMAKE_INSTALL_PREFIX. This commit removes our own set of variables and
instead refers users to use the standard ones.

As a second benefit, this commit also fixes our pkgconfig generation to
use the GNUInstallDirs module. We had a bug there where we ignored the
CMAKE_INSTALL_PREFIX when configuring the libdir and includedir keys, so
if libdir was set to "lib64", then libdir would be an invalid path. With
GNUInstallDirs, we can now use `CMAKE_INSTALL_FULL_LIBDIR`, which
handles the prefix for us.
2020-03-14 11:18:20 +01:00

78 lines
2.6 KiB
CMake

# pkg-config file generation
#
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}/${PKGCONFIG_FILENAME}.pc")
if (NOT DEFINED PKGCONFIG_DESCRIPTION)
message(FATAL_ERROR "Missing DESCRIPTION argument")
endif()
if (NOT DEFINED PKGCONFIG_VERSION)
message(FATAL_ERROR "Missing VERSION argument")
endif()
# Write .pc "header"
file(WRITE "${PKGCONFIG_FILE}"
"prefix=\"${CMAKE_INSTALL_PREFIX}\"\n"
"libdir=\"${CMAKE_INSTALL_FULL_LIBDIR}\"\n"
"includedir=\"${CMAKE_INSTALL_FULL_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 "${CMAKE_INSTALL_LIBDIR}/pkgconfig")
endfunction()