From d5baeff85f9a5b6b1733d30a0e1b835b13ea458d Mon Sep 17 00:00:00 2001
From: Paulo Antonio Alvarez <pauloaalvarez@gmail.com>
Date: Mon, 17 Oct 2016 22:12:12 -0200
Subject: [PATCH] Add pkg-config file support for libcjson

We configure and install a pkg-config file so that our compilation and
linking flags can be more easily found using pkg-config.
---
 CMakeLists.txt | 8 ++++++++
 libcjson.pc.in | 9 +++++++++
 2 files changed, 17 insertions(+)
 create mode 100644 libcjson.pc.in

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 049f895..0f0ddd3 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -9,6 +9,10 @@ set(CJSON_VERSION "${CJSON_VERSION_MAJOR}.${CJSON_VERSION_MINOR}.${CJSON_VERSION
 
 add_compile_options(-ansi -pedantic -Wall -Wextra -Werror -Wstrict-prototypes -Wwrite-strings)
 
+#variables for pkg-config
+set(prefix ${CMAKE_INSTALL_PREFIX})
+set(libdir "${CMAKE_INSTALL_PREFIX}/lib")
+
 #cJSON
 set(PROJ_CJSON cJSON)
 set(CJSON_LIB cjson)
@@ -22,8 +26,12 @@ if (NOT WIN32)
     target_link_libraries(${CJSON_LIB} m)
 endif()
 
+configure_file("${cJSON_SOURCE_DIR}/libcjson.pc.in"
+    "${cJSON_BINARY_DIR}/libcjson.pc" @ONLY)
+
 install(TARGETS ${CJSON_LIB} DESTINATION lib${LIB_SUFFIX})
 install(FILES cJSON.h DESTINATION include/cjson)
+install (FILES ${cJSON_BINARY_DIR}/libcjson.pc DESTINATION lib/pkgconfig)
 
 set_target_properties(${CJSON_LIB}
     PROPERTIES
diff --git a/libcjson.pc.in b/libcjson.pc.in
new file mode 100644
index 0000000..e04d5ee
--- /dev/null
+++ b/libcjson.pc.in
@@ -0,0 +1,9 @@
+prefix=@prefix@
+libdir=@libdir@
+includedir=${prefix}/include/cJSON
+
+Name: libcJSON
+Version: 1.0
+Description: Ultralightweight JSON parser in ANSI C
+Libs: -L${libdir} -lcJSON
+Cflags: -I${includedir}