Avoid embedding the absolute install prefix in the artifacts (#98)

Signed-off-by: Sean McGrath <[email protected]>
Co-authored-by: Alejandro Hernández Cordero <[email protected]>

Author: sdmcgrath

CMakeLists.txt

@@ -107,6 +107,8 @@ install(FILES
         "${CMAKE_BINARY_DIR}/${cmake_conf_version_file}"
   DESTINATION ${CMAKE_CONFIG_INSTALL_DIR} COMPONENT cmake)
 
+string(REGEX REPLACE "[^/]+" ".." RELATIVE_PATH_LIBDIR_TO_PREFIX "${CMAKE_INSTALL_LIBDIR}")
+
 set(PKG_DESC "Console Bridge")
 set(PKG_CB_LIBS "-l${PROJECT_NAME}")
 set(pkg_conf_file "console_bridge.pc")

console_bridge.pc.in

@@ -1,5 +1,5 @@
 # This file was generated by CMake for @PROJECT_NAME@
-prefix=@CMAKE_INSTALL_PREFIX@
+prefix=${pcfiledir}/../@RELATIVE_PATH_LIBDIR_TO_PREFIX@
 exec_prefix=${prefix}
 libdir=@CMAKE_INSTALL_FULL_LIBDIR@
 includedir=@CMAKE_INSTALL_FULL_INCLUDEDIR@