From: Ian Lance Taylor <iant@golang.org>
Date: Thu, 17 Apr 2014 03:28:53 +0000 (-0700)
Subject: cmd/ld: don't pass -rdynamic to external linker if -static is used
X-Git-Tag: go1.3beta1~29
X-Git-Url: http://www.git.cypherpunks.su/?a=commitdiff_plain;h=827aab07b80cd8ad26548a6fa234b7d038537d33;p=gostls13.git

cmd/ld: don't pass -rdynamic to external linker if -static is used

Fixes #7800.

LGTM=rsc
R=rsc
CC=golang-codereviews
https://golang.org/cl/87790051
---

diff --git a/src/cmd/ld/lib.c b/src/cmd/ld/lib.c
index 78b8cf2bad..29de54e3cf 100644
--- a/src/cmd/ld/lib.c
+++ b/src/cmd/ld/lib.c
@@ -654,6 +654,20 @@ hostlink(void)
 		if(*p == '\0')
 			break;
 		argv[argc++] = p;
+
+		// clang, unlike GCC, passes -rdynamic to the linker
+		// even when linking with -static, causing a linker
+		// error when using GNU ld.  So take out -rdynamic if
+		// we added it.  We do it in this order, rather than
+		// only adding -rdynamic later, so that -extldflags
+		// can override -rdynamic without using -static.
+		if(iself && strncmp(p, "-static", 7) == 0 && (p[7]==' ' || p[7]=='\0')) {
+			for(i=0; i<argc; i++) {
+				if(strcmp(argv[i], "-rdynamic") == 0)
+					argv[i] = "-static";
+			}
+		}
+
 		p = strchr(p + 1, ' ');
 	}