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build: install .pc and .cmake files to share/ (#3619)

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As nlohmann_json is a header-only library, its pkg-config and cmake
config files should be installed to `share/` (GNUInstallDirs' DATADIR),
as `share/` is the canonical directory where architecture-independent
files should be stored, while `lib/` is for architecture-dependent stuff
(see the [FHS][]).

Apart from being technically correct, installing to `share/` can help
with cross-compiling, for example in Debian-based environments. If
you're interested, I'd suggest reading this [thread][].

Related to #1697

[FHS]: https://refspecs.linuxfoundation.org/FHS_3.0/fhs-3.0.html#usrshareArchitectureindependentData
[thread]: https://github.com/marzer/tomlplusplus/pull/165#issuecomment-1193146210
This commit is contained in:
Andrea Pappacoda 2022-07-29 07:43:22 +02:00 committed by GitHub
parent e3095f636f
commit 6576c3f776
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 2 additions and 2 deletions
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4
CMakeLists.txt
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@ -57,7 +57,7 @@ endif ()
include(GNUInstallDirs)
set(NLOHMANN_JSON_TARGET_NAME ${PROJECT_NAME})
set(NLOHMANN_JSON_CONFIG_INSTALL_DIR "${CMAKE_INSTALL_LIBDIR}/cmake/${PROJECT_NAME}" CACHE INTERNAL "")
set(NLOHMANN_JSON_CONFIG_INSTALL_DIR "${CMAKE_INSTALL_DATADIR}/cmake/${PROJECT_NAME}" CACHE INTERNAL "")
set(NLOHMANN_JSON_INCLUDE_INSTALL_DIR "${CMAKE_INSTALL_INCLUDEDIR}")
set(NLOHMANN_JSON_TARGETS_EXPORT_NAME "${PROJECT_NAME}Targets")
set(NLOHMANN_JSON_CMAKE_CONFIG_TEMPLATE "cmake/config.cmake.in")
@ -65,7 +65,7 @@ set(NLOHMANN_JSON_CMAKE_CONFIG_DIR "${CMAKE_CURRENT_BINARY_DIR}")
set(NLOHMANN_JSON_CMAKE_VERSION_CONFIG_FILE "${NLOHMANN_JSON_CMAKE_CONFIG_DIR}/${PROJECT_NAME}ConfigVersion.cmake")
set(NLOHMANN_JSON_CMAKE_PROJECT_CONFIG_FILE "${NLOHMANN_JSON_CMAKE_CONFIG_DIR}/${PROJECT_NAME}Config.cmake")
set(NLOHMANN_JSON_CMAKE_PROJECT_TARGETS_FILE "${NLOHMANN_JSON_CMAKE_CONFIG_DIR}/${PROJECT_NAME}Targets.cmake")
set(NLOHMANN_JSON_PKGCONFIG_INSTALL_DIR "${CMAKE_INSTALL_LIBDIR}/pkgconfig")
set(NLOHMANN_JSON_PKGCONFIG_INSTALL_DIR "${CMAKE_INSTALL_DATADIR}/pkgconfig")
if (JSON_MultipleHeaders)
set(NLOHMANN_JSON_INCLUDE_BUILD_DIR "${PROJECT_SOURCE_DIR}/include/")