From: Christian Kastner <ckk@debian.org>
Date: Fri, 25 Sep 2015 10:39:42 +0200
Subject: cmake: Configurable pkgconfig install destination

Don't hard-code the destination; allow it to be overrridden, just as for the
other targets.

Forwarded: not-needed
Last-Update: 2015-09-25
---
 CMakeLists.txt                              | 4 +---
 cmake/Modules/DefineInstallationPaths.cmake | 6 ++++++
 2 files changed, 7 insertions(+), 3 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index b91f6fb..68bf7c4 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -16,11 +16,9 @@ INCLUDE_DIRECTORIES(${CMAKE_CURRENT_BINARY_DIR}/src/include/)
 
 configure_file( ${CMAKE_SOURCE_DIR}/cmake/fann.pc.cmake ${CMAKE_CURRENT_BINARY_DIR}/fann.pc @ONLY )
 
-SET(PKGCONFIG_INSTALL_DIR /lib/pkgconfig)
-
 ########### install files ###############
 
-INSTALL_FILES( ${PKGCONFIG_INSTALL_DIR} FILES  fann.pc )
+INSTALL(FILES ${CMAKE_CURRENT_BINARY_DIR}/fann.pc DESTINATION ${PKGCONFIG_INSTALL_DIR} )
 
 ADD_SUBDIRECTORY( src ) 
 
diff --git a/cmake/Modules/DefineInstallationPaths.cmake b/cmake/Modules/DefineInstallationPaths.cmake
index 644cf1b..2c8e0a4 100644
--- a/cmake/Modules/DefineInstallationPaths.cmake
+++ b/cmake/Modules/DefineInstallationPaths.cmake
@@ -45,6 +45,12 @@ if (UNIX)
         FORCE
     )
 
+    SET(PKGCONFIG_INSTALL_DIR
+        "${LIB_INSTALL_DIR}/pkgconfig"
+        CACHE PATH "The subdirectory relative to the install prefix where libraries will be installed (default is prefix/lib)"
+        FORCE
+    )
+
     SET(LIBEXEC_INSTALL_DIR
         "${EXEC_INSTALL_PREFIX}/libexec"
         CACHE PATH "The subdirectory relative to the install prefix where libraries will be installed (default is prefix/libexec)"