Make sure the build system honors C_INCLUDE_PATH and LIBRARY_PATH when looking for headers and libraries. --- a/setup.py 2015-10-07 23:32:58.891329173 +0200 +++ b/setup.py 2015-10-07 23:46:29.653349924 +0200 @@ -676,15 +676,15 @@ # if a file is found in one of those directories, it can # be assumed that no additional -I,-L directives are needed. if not CROSS_COMPILING: - self.lib_dirs = self.compiler.library_dirs + system_lib_dirs - self.inc_dirs = self.compiler.include_dirs + system_include_dirs + self.lib_dirs = os.getenv('LIBRARY_PATH', '').split(os.pathsep) + self.inc_dirs = os.getenv('C_INCLUDE_PATH', '').split(os.pathsep) else: # Add the sysroot paths. 'sysroot' is a compiler option used to # set the logical path of the standard system headers and # libraries. - self.lib_dirs = (self.compiler.library_dirs + + self.lib_dirs = (os.getenv('CROSS_LIBRARY_PATH', '').split(os.pathsep) + sysroot_paths(('LDFLAGS', 'CC'), system_lib_dirs)) - self.inc_dirs = (self.compiler.include_dirs + + self.inc_dirs = (os.getenv('CROSS_CPATH', '').split(os.pathsep) + sysroot_paths(('CPPFLAGS', 'CFLAGS', 'CC'), system_include_dirs))