From 174d06a3ff549702d1c7b9df6ce7a096801ba3ae Mon Sep 17 00:00:00 2001
From: Vlad Vissoultchev <wqweto@gmail.com>
Date: Wed, 6 Apr 2016 19:25:30 +0300
Subject: [PATCH] Skip math library if not found when -lm option is used
This only silences "cannot find library" error and allows Makefiles targeting gcc to not complain about missing libraries
If there is custom libm then standard handling applies.
---
tcc.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/tcc.c b/tcc.c
index 95e1a15f..6d9bf527 100644
--- a/tcc.c
+++ b/tcc.c
@@ -314,8 +314,11 @@ int main(int argc, char **argv)
const char *filename = s->files[i] + 1;
if (filename[0] == '-' && filename[1] == 'l') {
if (tcc_add_library(s, filename + 2) < 0) {
- tcc_error_noabort("cannot find library 'lib%s'", filename+2);
- ret = 1;
+ /* don't fail on -lm as it's harmless to skip math lib */
+ if (strcmp(filename + 2, "m")) {
+ tcc_error_noabort("cannot find library 'lib%s'", filename + 2);
+ ret = 1;
+ }
}
} else {
if (1 == s->verbose)