* system.h (IS_DIR_SEPARATOR): Use uppercase macro name.

	(IS_ABSOLUTE_PATHNAME): New macro.
	* gcc.c (find_a_file, process_command, do_spec_1, main): Use it.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@37818 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 16 insertions, 3 deletions

diff --git a/gcc/system.h b/gcc/system.h
index 20531ddb4e5..59caf48f0e5 100644
--- a/gcc/system.h
+++ b/gcc/system.h
@@ -538,12 +538,25 @@ extern void abort PARAMS ((void));
 
 /* Define IS_DIR_SEPARATOR.  */
 #ifndef DIR_SEPARATOR_2
-# define IS_DIR_SEPARATOR(ch) ((ch) == DIR_SEPARATOR)
+# define IS_DIR_SEPARATOR(CH) ((CH) == DIR_SEPARATOR)
 #else /* DIR_SEPARATOR_2 */
-# define IS_DIR_SEPARATOR(ch) \
-	(((ch) == DIR_SEPARATOR) || ((ch) == DIR_SEPARATOR_2))
+# define IS_DIR_SEPARATOR(CH) \
+	(((CH) == DIR_SEPARATOR) || ((CH) == DIR_SEPARATOR_2))
 #endif /* DIR_SEPARATOR_2 */
 
+/* Say how to test for an absolute pathname.  On Unix systems, this is if
+   it starts with a leading slash or a '$', the latter meaning the value of
+   an environment variable is to be used.  On machien with DOS-based
+   file systems, it is also absolute if it starts with a drive identifier.  */
+#ifdef HAVE_DOS_BASED_FILE_SYSTEM
+#define IS_ABSOLUTE_PATHNAME(STR) \
+  (IS_DIR_SEPARATOR ((STR)[0]) || (STR)[0] == '$' \
+   || ((STR)[0] != '\0' && (STR)[1] == ':' && IS_DIR_SEPARATOR ((STR)[2])))
+#else
+#define IS_ABSOLUTE_PATHNAME(STR) \
+  (IS_DIR_SEPARATOR ((STR)[0]) || (STR)[0] == '$')
+#endif
+
 /* Get libiberty declarations. */
 #include "libiberty.h"