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CMake: Update liblzma-config.cmake generation. 

Now that the threading is configurable, the liblzma CMake package only
needs the threading library when using POSIX threads.
This commit is contained in:
Jia Tan 2023-03-28 22:32:40 +08:00
parent 4d7fac0b07
commit 2cb6028fc3
1 changed files with 22 additions and 11 deletions
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33
CMakeLists.txt
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@ -870,10 +870,7 @@ set_target_properties(liblzma PROPERTIES
PREFIX ""
)
# Create liblzma-config-version.cmake. We use this spelling instead of
# liblzmaConfig.cmake to make find_package work in case insensitive manner
# even with case sensitive file systems. This gives more consistent behavior
# between operating systems.
# Create liblzma-config-version.cmake.
#
# FIXME: SameMajorVersion is correct for stable releases but it is wrong
# for development releases where each release may have incompatible changes.
@ -883,13 +880,14 @@ write_basic_package_version_file(
VERSION "${liblzma_VERSION}"
COMPATIBILITY SameMajorVersion)
# Create liblzma-config.cmake.
file(WRITE "${CMAKE_CURRENT_BINARY_DIR}/liblzma-config.cmake"
"include(CMakeFindDependencyMacro)
set(THREADS_PREFER_PTHREAD_FLAG TRUE)
find_dependency(Threads)
include(\"\${CMAKE_CURRENT_LIST_DIR}/liblzma-targets.cmake\")
# Create liblzma-config.cmake. We use this spelling instead of
# liblzmaConfig.cmake to make find_package work in case insensitive
# manner even with case sensitive file systems. This gives more consistent
# behavior between operating systems. This optionally includes a dependency
# on a threading library, so the contents are created in two separate parts.
# The "second half" is always needed, so create it first.
set(LZMA_CONFIG_CONTENTS
"include(\"\${CMAKE_CURRENT_LIST_DIR}/liblzma-targets.cmake\")
# Be compatible with the spelling used by the FindLibLZMA module. This
# doesn't use ALIAS because it would make CMake resolve LibLZMA::LibLZMA
@ -900,6 +898,19 @@ set_target_properties(LibLZMA::LibLZMA PROPERTIES
INTERFACE_LINK_LIBRARIES liblzma::liblzma)
")
if(ENABLE_THREADS STREQUAL "posix")
set(LZMA_CONFIG_CONTENTS
"include(CMakeFindDependencyMacro)
set(THREADS_PREFER_PTHREAD_FLAG TRUE)
find_dependency(Threads)
${LZMA_CONFIG_CONTENTS}
")
endif()
file(WRITE "${CMAKE_CURRENT_BINARY_DIR}/liblzma-config.cmake"
"${LZMA_CONFIG_CONTENTS}")
# Set CMAKE_INSTALL_LIBDIR and friends.
include(GNUInstallDirs)