From 5371f206f348346925e28edd177b429bee1da89c Mon Sep 17 00:00:00 2001
From: Dimitri Stolnikov <horiz0n@gmx.net>
Date: Sat, 12 May 2012 12:34:21 +0200
Subject: [PATCH] install pkg-config file when building with cmake

---
 CMakeLists.txt  | 36 ++++++++++++++++++++++++++++++++++++
 librtlsdr.pc.in |  3 ++-
 2 files changed, 38 insertions(+), 1 deletion(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index b358c2d..2f735c1 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -92,3 +92,39 @@ add_custom_target(uninstall
 ########################################################################
 add_subdirectory(include)
 add_subdirectory(src)
+
+########################################################################
+# Create Pkg Config File
+########################################################################
+FOREACH(inc ${LIBUSB_INCLUDE_DIR})
+    LIST(APPEND RTLSDR_PC_CFLAGS "-I${inc}")
+ENDFOREACH(inc)
+
+FOREACH(lib ${LIBUSB_LIBRARY_DIRS})
+    LIST(APPEND RTLSDR_PC_LIBS "-L${lib}")
+ENDFOREACH(lib)
+
+# use space-separation format for the pc file
+STRING(REPLACE ";" " " RTLSDR_PC_CFLAGS "${RTLSDR_PC_CFLAGS}")
+STRING(REPLACE ";" " " RTLSDR_PC_LIBS "${RTLSDR_PC_LIBS}")
+
+# unset these vars to avoid hard-coded paths to cross environment
+IF(CMAKE_CROSSCOMPILING)
+    UNSET(RTLSDR_PC_CFLAGS)
+    UNSET(RTLSDR_PC_LIBS)
+ENDIF(CMAKE_CROSSCOMPILING)
+
+set(prefix ${CMAKE_INSTALL_PREFIX})
+set(exec_prefix \${prefix})
+set(libdir \${exec_prefix}/lib)
+set(includedir \${prefix}/include)
+
+CONFIGURE_FILE(
+    ${CMAKE_CURRENT_SOURCE_DIR}/librtlsdr.pc.in
+    ${CMAKE_CURRENT_BINARY_DIR}/librtlsdr.pc
+@ONLY)
+
+INSTALL(
+    FILES ${CMAKE_CURRENT_BINARY_DIR}/librtlsdr.pc
+    DESTINATION lib/pkgconfig
+)
diff --git a/librtlsdr.pc.in b/librtlsdr.pc.in
index bd77e1b..5e55049 100644
--- a/librtlsdr.pc.in
+++ b/librtlsdr.pc.in
@@ -6,5 +6,6 @@ includedir=@includedir@
 Name: RTL-SDR Library
 Description: C Utility Library
 Version: @VERSION@
+Cflags: -I${includedir}/ @RTLSDR_PC_CFLAGS@
 Libs: -L${libdir} -lrtlsdr -lusb-1.0
-Cflags: -I${includedir}/
+Libs.private: @RTLSDR_PC_LIBS@