From b95044abb202838837b0566efc40ae26308a4bb4 Mon Sep 17 00:00:00 2001
From: Martin Willers <M.Willers@gmx.net>
Date: Mon, 10 May 2021 03:02:08 +0200
Subject: Export cmake config file (#289)

Create and install proper CMake *-target.cmake and *-config.cmake files,
for use by other CMake-using projects.

It installs a file called automotive-dlt-targets.cmake into a common
location for such files, namely
<prefix>/lib/cmake/automotive-dlt/automotive-dlt-targets.cmake
They can now call find_package(automotive-dlt) and obtain a target
called Genivi::dlt that they can link against with target_link_libraries(),
by which they automatically gain all necessary attributes, including libdlt's
include directories.

Signed-off-by: Martin Willers <M.Willers@gmx.net>
---
 src/lib/CMakeLists.txt | 38 ++++++++++++++++++++++++++++++++++++--
 1 file changed, 36 insertions(+), 2 deletions(-)

(limited to 'src')

diff --git a/src/lib/CMakeLists.txt b/src/lib/CMakeLists.txt
index 6d20c64..5a94bef 100644
--- a/src/lib/CMakeLists.txt
+++ b/src/lib/CMakeLists.txt
@@ -44,8 +44,14 @@ else()
     message(STATUS "pthread_setname_np API not available on this platform")
 endif()
 
-target_link_libraries(dlt ${RT_LIBRARY} ${SOCKET_LIBRARY} ${CMAKE_THREAD_LIBS_INIT})
-target_include_directories(dlt PUBLIC ${PROJECT_SOURCE_DIR}/include/dlt ${PROJECT_BINARY_DIR}/include/dlt)
+target_link_libraries(dlt ${RT_LIBRARY} ${SOCKET_LIBRARY} Threads::Threads)
+
+target_include_directories(dlt
+    PUBLIC
+        $<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}/include/dlt>
+        $<BUILD_INTERFACE:${PROJECT_BINARY_DIR}/include/dlt>
+        $<INSTALL_INTERFACE:include>
+)
 
 if(WITH_LIB_SHORT_VERSION)
     set_target_properties(dlt PROPERTIES VERSION ${PROJECT_VERSION_MAJOR} SOVERSION ${PROJECT_VERSION_MAJOR})
@@ -53,7 +59,11 @@ else()
     set_target_properties(dlt PROPERTIES VERSION ${PROJECT_VERSION} SOVERSION ${PROJECT_VERSION_MAJOR})
 endif()
 
+add_library(Genivi::dlt ALIAS dlt)
+
 install(TARGETS dlt
+    EXPORT
+        ${PROJECT_NAME}-targets
     RUNTIME
         DESTINATION bin
         COMPONENT base
@@ -63,3 +73,27 @@ install(TARGETS dlt
     ARCHIVE
         DESTINATION ${CMAKE_INSTALL_LIBDIR}/static
         COMPONENT base)
+
+# Install *-targets.cmake file
+install(
+    EXPORT ${PROJECT_NAME}-targets
+    DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/${PROJECT_NAME}
+    NAMESPACE Genivi::
+)
+
+# Create *-config.cmake file
+include(CMakePackageConfigHelpers)
+configure_package_config_file(
+    ${PROJECT_SOURCE_DIR}/${PROJECT_NAME}-config.cmake.in
+    ${PROJECT_BINARY_DIR}/${PROJECT_NAME}-config.cmake
+    INSTALL_DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/${PROJECT_NAME}
+    NO_SET_AND_CHECK_MACRO
+)
+
+# Install *-config.cmake file
+install(
+    FILES
+        ${PROJECT_BINARY_DIR}/${PROJECT_NAME}-config.cmake
+    DESTINATION
+        ${CMAKE_INSTALL_LIBDIR}/cmake/${PROJECT_NAME}
+)
-- 
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