Canonicalize symlinks in portnames

[libserialport.git] / configure.ac

diff --git a/configure.ac b/configure.ac
index 19ab3aa30e64d9610ef3db048b70e28b41ac75d6..3e19f41493bddb604b014e687fea0bc3ee3aa345 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -126,6 +126,9 @@ AC_CHECK_DECLS([BOTHER],,, [[#include <linux/termios.h>]])
 # Check for serial_struct.
 AC_CHECK_TYPES([struct serial_struct],,, [[#include <linux/serial.h>]])
 
+# Check for realpath().
+AC_CHECK_FUNC([realpath], [AC_DEFINE(HAVE_REALPATH, 1, [realpath is available.])], [])
+
 AC_CACHE_CHECK([for visibility control], [sp_cv_visibility_control], [
        sp_saved_CFLAGS=$CFLAGS
        CFLAGS="$CFLAGS -Werror"