yaml-cpp7/yaml-cpp-0.7.0-fix-cmake-export-files.patch

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From 4aad2b1666a4742743b04e765a34742512915674 Mon Sep 17 00:00:00 2001
From: Felix Schwitzer <flx107809@gmail.com>
Date: Fri, 1 Apr 2022 05:26:47 +0200
Subject: [PATCH] Fix CMake export files (#1077)
After configuring the file `yaml-cpp-config.cmake.in`, the result ends up with
empty variables. (see also the discussion in #774).
Rework this file and the call to `configure_package_config_file` according the
cmake documentation
(https://cmake.org/cmake/help/v3.22/module/CMakePackageConfigHelpers.html?highlight=configure_package_config#command:configure_package_config_file)
to overcome this issue and allow a simple `find_package` after install.
As there was some discussion about the place where to install the
`yaml-cpp-config.cmake` file, e.g. #1055, factor out the install location into
an extra variable to make it easier changing this location in the future.
Also untabify CMakeLists.txt in some places to align with the other code parts in this file.
---
CMakeLists.txt | 29 ++++++++++++++++++-----------
yaml-cpp-config.cmake.in | 10 ++++++----
2 files changed, 24 insertions(+), 15 deletions(-)
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 564b7c8d1..ccc1964ea 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -133,10 +133,16 @@ set_target_properties(yaml-cpp PROPERTIES
PROJECT_LABEL "yaml-cpp ${yaml-cpp-label-postfix}"
DEBUG_POSTFIX "${CMAKE_DEBUG_POSTFIX}")
+# FIXME(felix2012): A more common place for the cmake export would be
+# `CMAKE_INSTALL_LIBDIR`, as e.g. done in ubuntu or in this project for GTest
+set(CONFIG_EXPORT_DIR "${CMAKE_INSTALL_DATADIR}/cmake/yaml-cpp")
+set(EXPORT_TARGETS yaml-cpp)
configure_package_config_file(
"${PROJECT_SOURCE_DIR}/yaml-cpp-config.cmake.in"
"${PROJECT_BINARY_DIR}/yaml-cpp-config.cmake"
- INSTALL_DESTINATION "${CMAKE_INSTALL_DATADIR}/cmake/yaml-cpp")
+ INSTALL_DESTINATION "${CONFIG_EXPORT_DIR}"
+ PATH_VARS CMAKE_INSTALL_INCLUDEDIR CONFIG_EXPORT_DIR)
+unset(EXPORT_TARGETS)
write_basic_package_version_file(
"${PROJECT_BINARY_DIR}/yaml-cpp-config-version.cmake"
@@ -145,30 +151,31 @@ write_basic_package_version_file(
configure_file(yaml-cpp.pc.in yaml-cpp.pc @ONLY)
if (YAML_CPP_INSTALL)
- install(TARGETS yaml-cpp
+ install(TARGETS yaml-cpp
EXPORT yaml-cpp-targets
RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR})
- install(DIRECTORY ${PROJECT_SOURCE_DIR}/include/
+ install(DIRECTORY ${PROJECT_SOURCE_DIR}/include/
DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}
- FILES_MATCHING PATTERN "*.h")
+ FILES_MATCHING PATTERN "*.h")
install(EXPORT yaml-cpp-targets
- DESTINATION "${CMAKE_INSTALL_DATADIR}/cmake/yaml-cpp")
- install(FILES
- "${PROJECT_BINARY_DIR}/yaml-cpp-config.cmake"
- "${PROJECT_BINARY_DIR}/yaml-cpp-config-version.cmake"
- DESTINATION "${CMAKE_INSTALL_DATADIR}/cmake/yaml-cpp")
+ DESTINATION "${CONFIG_EXPORT_DIR}")
+ install(FILES
+ "${PROJECT_BINARY_DIR}/yaml-cpp-config.cmake"
+ "${PROJECT_BINARY_DIR}/yaml-cpp-config-version.cmake"
+ DESTINATION "${CONFIG_EXPORT_DIR}")
install(FILES "${PROJECT_BINARY_DIR}/yaml-cpp.pc"
DESTINATION ${CMAKE_INSTALL_DATADIR}/pkgconfig)
endif()
+unset(CONFIG_EXPORT_DIR)
if(YAML_CPP_BUILD_TESTS)
- add_subdirectory(test)
+ add_subdirectory(test)
endif()
if(YAML_CPP_BUILD_TOOLS)
- add_subdirectory(util)
+ add_subdirectory(util)
endif()
if (YAML_CPP_CLANG_FORMAT_EXE)
diff --git a/yaml-cpp-config.cmake.in b/yaml-cpp-config.cmake.in
index 7b41e3f30..a7ace3dc0 100644
--- a/yaml-cpp-config.cmake.in
+++ b/yaml-cpp-config.cmake.in
@@ -3,12 +3,14 @@
# YAML_CPP_INCLUDE_DIR - include directory
# YAML_CPP_LIBRARIES - libraries to link against
-# Compute paths
-get_filename_component(YAML_CPP_CMAKE_DIR "${CMAKE_CURRENT_LIST_FILE}" PATH)
-set(YAML_CPP_INCLUDE_DIR "@CONFIG_INCLUDE_DIRS@")
+@PACKAGE_INIT@
+
+set_and_check(YAML_CPP_INCLUDE_DIR "@PACKAGE_CMAKE_INSTALL_INCLUDEDIR@")
# Our library dependencies (contains definitions for IMPORTED targets)
-include("${YAML_CPP_CMAKE_DIR}/yaml-cpp-targets.cmake")
+include(@PACKAGE_CONFIG_EXPORT_DIR@/yaml-cpp-targets.cmake)
# These are IMPORTED targets created by yaml-cpp-targets.cmake
set(YAML_CPP_LIBRARIES "@EXPORT_TARGETS@")
+
+check_required_components(@EXPORT_TARGETS@)