Hi,
when crosscompiling, pkg_config shouldn't find packages for the host system,
but for the target system.
Attached is a patch against current cmake cvs which tries to do that by
setting the env var PKG_CONFIG_LIBDIR to /usr/lib/pkgconfig
and /usr/local/lib/pkgconfig inside the directories of CMAKE_FIND_ROOT_PATH.
So, can somebody please test the attached patch ?
Thanks
Alex
Index: FindPkgConfig.cmake
===================================================================
RCS file: /cvsroot/CMake/CMake/Modules/FindPkgConfig.cmake,v
retrieving revision 1.7
diff -b -u -p -r1.7 FindPkgConfig.cmake
--- FindPkgConfig.cmake 7 Feb 2008 18:19:38 -0000 1.7
+++ FindPkgConfig.cmake 18 Jul 2008 21:44:26 -0000
@@ -103,6 +103,20 @@ if(PKG_CONFIG_EXECUTABLE)
set(PKG_CONFIG_FOUND 1)
endif(PKG_CONFIG_EXECUTABLE)
+# When crosscompiling, pkg_config should not search for packages of the host system,
+# but for the target system. To do this, there is the environment variable
+# PKG_CONFIG_LIBDIR, which was added to pkg_config explicitely for crosscompiling.
+# So set this here to point inside the CMAKE_FIND_ROOT_PATH so it can find
+# only packages for the target system when crosscompiling. Alex
+if(CMAKE_CROSSCOMPILING AND CMAKE_FIND_ROOT_PATH)
+ set(pkgconfigLibDir)
+ foreach(currentFindRoot ${CMAKE_FIND_ROOT_PATH})
+ list(APPEND pkgconfigLibDir ${currentFindRoot}/usr/lib/pkgconfig )
+ list(APPEND pkgconfigLibDir ${currentFindRoot}/usr/local/lib/pkgconfig )
+ endforeach(currentFindRoot)
+ file(TO_NATIVE_PATH "${pkgconfigLibDir}" pkgconfigLibDir)
+ set(ENV{PKG_CONFIG_LIBDIR} "${pkgconfigLibDir}" )
+endif(CMAKE_CROSSCOMPILING AND CMAKE_FIND_ROOT_PATH)
# Unsets the given variables
macro(_pkgconfig_unset var)
Index: UsePkgConfig.cmake
===================================================================
RCS file: /cvsroot/CMake/CMake/Modules/UsePkgConfig.cmake,v
retrieving revision 1.6
diff -b -u -p -r1.6 UsePkgConfig.cmake
--- UsePkgConfig.cmake 7 Mar 2007 20:36:09 -0000 1.6
+++ UsePkgConfig.cmake 18 Jul 2008 21:44:26 -0000
@@ -12,7 +12,23 @@
-FIND_PROGRAM(PKGCONFIG_EXECUTABLE NAMES pkg-config PATHS /usr/local/bin )
+FIND_PROGRAM(PKGCONFIG_EXECUTABLE NAMES pkg-config)
+
+# When crosscompiling, pkg_config should not search for packages of the host system,
+# but for the target system. To do this, there is the environment variable
+# PKG_CONFIG_LIBDIR, which was added to pkg_config explicitely for crosscompiling.
+# So set this here to point inside the CMAKE_FIND_ROOT_PATH so it can find
+# only packages for the target system when crosscompiling. Alex
+IF(CMAKE_CROSSCOMPILING AND CMAKE_FIND_ROOT_PATH)
+ SET(pkgconfigLibDir)
+ FOREACH(currentFindRoot ${CMAKE_FIND_ROOT_PATH})
+ LIST(APPEND pkgconfigLibDir ${currentFindRoot}/usr/lib/pkgconfig )
+ LIST(APPEND pkgconfigLibDir ${currentFindRoot}/usr/local/lib/pkgconfig )
+ ENDFOREACH(currentFindRoot)
+ FILE(TO_NATIVE_PATH "${pkgconfigLibDir}" pkgconfigLibDir)
+ SET(ENV{PKG_CONFIG_LIBDIR} "${pkgconfigLibDir}" )
+ENDIF(CMAKE_CROSSCOMPILING AND CMAKE_FIND_ROOT_PATH)
+
MACRO(PKGCONFIG _package _include_DIR _link_DIR _link_FLAGS _cflags)
message(STATUS
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