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authorJohn Ericson <John.Ericson@Obsidian.Systems>2022-01-01 20:18:27 +0000
committerJohn Ericson <John.Ericson@Obsidian.Systems>2022-07-25 21:02:53 +0000
commitac0d1d5c7b7e0d572e35e31e0b59be765ca42a48 (patch)
tree011a54e6042ee73873dc6922908d96474fd44ade /lld
parent8c626fc0c8a904c0040a36561edd9b62ac3b71b4 (diff)
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[cmake] Support custom package install paths
Firstly, we we make an additional GNUInstallDirs-style variable. With NixOS, for example, this is crucial as we want those to go in `${dev}/lib/cmake` not `${out}/lib/cmake` as that would a cmake subdir of the "regular" libdir, which is installed even when no one needs to do any development. Secondly, we make *Config.cmake robust to absolute package install paths. We for NixOS will in fact be passing them absolute paths to make the `${dev}` vs `${out}` distinction mentioned above, and the GNUInstallDirs-style variables are suposed to support absolute paths in general so it's good practice besides the NixOS use-case. Thirdly, we make `${project}_INSTALL_PACKAGE_DIR` CACHE PATHs like other install dirs are. Reviewed By: sebastian-ne Differential Revision: https://reviews.llvm.org/D117973
Diffstat (limited to 'lld')
-rw-r--r--lld/cmake/modules/CMakeLists.txt17
1 files changed, 11 insertions, 6 deletions
diff --git a/lld/cmake/modules/CMakeLists.txt b/lld/cmake/modules/CMakeLists.txt
index 760c9d5..57140e6 100644
--- a/lld/cmake/modules/CMakeLists.txt
+++ b/lld/cmake/modules/CMakeLists.txt
@@ -1,15 +1,20 @@
+include(GNUInstallPackageDir)
include(ExtendPath)
include(FindPrefixFromConfig)
# Generate a list of CMake library targets so that other CMake projects can
# link against them. LLVM calls its version of this file LLVMExports.cmake, but
# the usual CMake convention seems to be ${Project}Targets.cmake.
-set(LLD_INSTALL_PACKAGE_DIR lib${LLVM_LIBDIR_SUFFIX}/cmake/lld)
-set(lld_cmake_builddir "${CMAKE_BINARY_DIR}/${LLD_INSTALL_PACKAGE_DIR}")
+set(LLD_INSTALL_PACKAGE_DIR "${CMAKE_INSTALL_PACKAGEDIR}/lld" CACHE STRING
+ "Path for CMake subdirectory for LLD (defaults to '${CMAKE_INSTALL_PACKAGEDIR}/lld')")
+# CMAKE_INSTALL_PACKAGEDIR might be absolute, so don't reuse below.
+set(lld_cmake_builddir "${CMAKE_BINARY_DIR}/lib${LLVM_LIBDIR_SUFFIX}/cmake/lld")
# Keep this in sync with llvm/cmake/CMakeLists.txt!
-set(LLVM_INSTALL_PACKAGE_DIR lib${LLVM_LIBDIR_SUFFIX}/cmake/llvm)
-set(llvm_cmake_builddir "${LLVM_BINARY_DIR}/${LLVM_INSTALL_PACKAGE_DIR}")
+set(LLVM_INSTALL_PACKAGE_DIR "${CMAKE_INSTALL_PACKAGEDIR}/llvm" CACHE STRING
+ "Path for CMake subdirectory for LLVM (defaults to '${CMAKE_INSTALL_PACKAGEDIR}/llvm')")
+# CMAKE_INSTALL_PACKAGEDIR might be absolute, so don't reuse below.
+set(llvm_cmake_builddir "${CMAKE_BINARY_DIR}/lib${LLVM_LIBDIR_SUFFIX}/cmake/llvm")
get_property(LLD_EXPORTS GLOBAL PROPERTY LLD_EXPORTS)
export(TARGETS ${LLD_EXPORTS} FILE ${lld_cmake_builddir}/LLDTargets.cmake)
@@ -31,8 +36,8 @@ set(LLD_CONFIG_LLVM_CMAKE_DIR)
# Generate LLDConfig.cmake for the install tree.
find_prefix_from_config(LLD_CONFIG_CODE LLD_INSTALL_PREFIX "${LLD_INSTALL_PACKAGE_DIR}")
-set(LLD_CONFIG_CMAKE_DIR "\${LLD_INSTALL_PREFIX}/${LLD_INSTALL_PACKAGE_DIR}")
-set(LLD_CONFIG_LLVM_CMAKE_DIR "\${LLD_INSTALL_PREFIX}/${LLVM_INSTALL_PACKAGE_DIR}")
+extend_path(LLD_CONFIG_CMAKE_DIR "\${LLD_INSTALL_PREFIX}" "${LLD_INSTALL_PACKAGE_DIR}")
+extend_path(LLD_CONFIG_LLVM_CMAKE_DIR "\${LLD_INSTALL_PREFIX}" "${LLVM_INSTALL_PACKAGE_DIR}")
get_config_exports_includes(LLD LLD_CONFIG_INCLUDE_EXPORTS)
extend_path(LLD_CONFIG_INCLUDE_DIRS "\${LLD_INSTALL_PREFIX}" "${CMAKE_INSTALL_INCLUDEDIR}")
configure_file(