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cmake: Generate and install a pkg-config file

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I'm trying to build mtxclient, which expects a nlohmann_json pkg-config
file to exist in the system.  The meson builds install a pkg-config
file, but the cmake builds don't.  This adds a pkg-config file to the
cmake builds that is functionally equivalent to the one generated from
meson.

Signed-off-by: Palmer Dabbelt <palmer@dabbelt.com>
This commit is contained in:
Palmer Dabbelt 2019-08-08 14:36:27 -07:00
parent a015b78e81
commit b8b189dcb2
No known key found for this signature in database
GPG Key ID: EF4CA1502CCBAB41
2 changed files with 15 additions and 1 deletions
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12
CMakeLists.txt
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@ -4,7 +4,7 @@ cmake_minimum_required(VERSION 3.1)
## PROJECT
## name and version
##
project(nlohmann_json VERSION 3.7.0 LANGUAGES CXX)
project(nlohmann_json VERSION 3.7.0 DESCRIPTION "JSON for Modern C++" LANGUAGES CXX)
##
## INCLUDE
@ -73,6 +73,12 @@ if (MSVC)
)
endif()
# Install a pkg-config file, so other tools can find this.
CONFIGURE_FILE(
"${CMAKE_CURRENT_SOURCE_DIR}/pkg-config.pc.cmake"
"${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_NAME}.pc"
)
##
## TESTS
## create and configure the unit test target
@ -128,4 +134,8 @@ if(JSON_Install)
NAMESPACE ${PROJECT_NAME}::
DESTINATION ${NLOHMANN_JSON_CONFIG_INSTALL_DIR}
)
install(
FILES "${CMAKE_BINARY_DIR}/${PROJECT_NAME}.pc"
DESTINATION lib/pkgconfig
)
endif()

4
pkg-config.pc.cmake Normal file
View File

@ -0,0 +1,4 @@
Name: ${PROJECT_NAME}
Description: ${PROJECT_DESCRIPTION}
Version: ${PROJECT_VERSION}
Cflags: -I${CMAKE_INSTALL_PREFIX}/${CMAKE_INSTALL_INCLUDEDIR}