Install a projectm-eval.pc pkg-config file

The -pc file is only installed if ENABLE_PROJECTM_EVAL_INSTALL is enabled and projectm-eval is built on a UNIX OS (Linux, *BSD, macOS etc.).

Author: kblaschke

projectm-eval/CMakeLists.txt

@@ -128,4 +128,11 @@ if(ENABLE_PROJECTM_EVAL_INSTALL)
             COMPONENT Devel
             )
 
+    # Install pkgconfig file
+    if(UNIX)
+        configure_file(install-pkgconfig.cmake.in ${CMAKE_CURRENT_BINARY_DIR}/install-pkgconfig.cmake @ONLY)
+        install(SCRIPT ${CMAKE_CURRENT_BINARY_DIR}/install-pkgconfig.cmake
+            COMPONENT Devel
+        )
+    endif()
 endif()

projectm-eval/install-pkgconfig.cmake.in

@@ -0,0 +1,7 @@
+# pkg-config file install script. Executed during install phase of the library.
+
+set(CMAKE_INSTALL_LIBDIR "@CMAKE_INSTALL_LIBDIR@")
+set(CMAKE_INSTALL_INCLUDEDIR "@CMAKE_INSTALL_INCLUDEDIR@")
+set(PROJECT_VERSION "@PROJECT_VERSION@")
+set(PROJECTM_EVAL_FLOAT_SIZE "@PROJECTM_EVAL_FLOAT_SIZE@")
+configure_file(@CMAKE_CURRENT_SOURCE_DIR@/projectm-eval.pc.in ${CMAKE_INSTALL_PREFIX}/${CMAKE_INSTALL_LIBDIR}/pkgconfig/projectm-eval.pc @ONLY)

projectm-eval/projectm-eval.pc.in

@@ -0,0 +1,12 @@
+prefix=@CMAKE_INSTALL_PREFIX@
+exec_prefix=${prefix}
+libdir=${prefix}/@CMAKE_INSTALL_LIBDIR@
+includedir=${prefix}/@CMAKE_INSTALL_INCLUDEDIR@
+pkgdatadir=${prefix}/
+sysconfdir=${prefix}/
+
+Name: projectm-eval
+Version: @PROJECT_VERSION@
+Description: projectM Expression Evaluation Library
+Libs: -L${libdir} -l:projectM_eval
+Cflags: -I${includedir} -DPRJM_F_SIZE=@PROJECTM_EVAL_FLOAT_SIZE@