Support for generating pkg-config file

cppkafka.pc.in

@@ -0,0 +1,14 @@
+prefix=@CMAKE_INSTALL_PREFIX@
+exec_prefix=${prefix}
+libdir=${prefix}/lib
+sharedlibdir=${prefix}/lib
+includedir=${prefix}/include
+
+Name: cppkafka
+Url: https://github.com/mfontanini/cppkafka
+Description: C++ wrapper library on top of RdKafka
+Version: @CPPKAFKA_VERSION@
+Requires: librdkafka >= 0.9.4
+Requires.private:
+Libs: -L${libdir} -L${sharedlibdir} -L@RDKAFKA_ROOT_DIR@/lib -lcppkafka -lrdkafka -lpthread -lrt -lssl -lcrypto -ldl -lz
+Cflags: -I${includedir} -I${includedir}/cppkafka -I@RDKAFKA_ROOT_DIR@/include

include/cppkafka/CMakeLists.txt

@@ -10,7 +10,7 @@ function(make_cppkafka_header)
     endforeach()
 
     #create file from template
-    configure_file(${PROJECT_SOURCE_DIR}/cppkafka.h.in ${CPPKAFKA_HEADER})
+    configure_file(${PROJECT_SOURCE_DIR}/cppkafka.h.in ${CPPKAFKA_HEADER} @ONLY)
 endfunction()
 
 # Run file generation function

src/CMakeLists.txt

@@ -41,9 +41,19 @@ endif()
 target_link_libraries(cppkafka ${DEPENDENCIES})
 target_include_directories(cppkafka PUBLIC ${PROJECT_SOURCE_DIR}/include)
 
-install( 
+install(
     TARGETS cppkafka
     LIBRARY DESTINATION lib
     ARCHIVE DESTINATION lib
     COMPONENT dev
 )
+
+# Generate package configuration file
+set(PKG_CONFIG ${PROJECT_SOURCE_DIR}/package/cppkafka.pc)
+configure_file(${PROJECT_SOURCE_DIR}/cppkafka.pc.in ${PKG_CONFIG} @ONLY)
+
+install(
+    FILES PKG_CONFIG
+    DESTINATION share/pkgconfig
+    COMPONENT pkgconfig
+)