Hello!
Testing for a library is not sufficient if you also need the headers.
Many distributions install libraries without headers by default. This is
the case for Fedora Core 3 and libsysfs. The library is in sysfsutils,
but the headers are in sysfsutils-devel.
The patch for configure.in tests for both the headers and the library and
makes the configure script print a warning if libsysfs cannot be used.
The patch is against bridge-utils-1.0.4.
--
Regards,
Pavel Roskin
-------------- next part --------------
--- configure.in
+++ configure.in
@@ -24,7 +24,14 @@
AC_FUNC_MEMCMP
AC_CHECK_FUNCS(gethostname socket strdup uname)
AC_CHECK_FUNCS(if_nametoindex if_indextoname)
-AC_CHECK_LIB(sysfs, sysfs_open_directory)
+
+dnl Check for libsysfs
+libsysfs_found=0
+AC_CHECK_HEADER(sysfs/libsysfs.h,
+ [AC_CHECK_LIB(sysfs, sysfs_open_directory, libsysfs_found=1)])
+if test $libsysfs_found != 1; then
+ AC_MSG_WARN([Compiling without libsysfs support!])
+fi
AC_SUBST(KERNEL_HEADERS)
