From: Rich Felker <dalias@aerifal.cx>
Date: Thu, 7 Jun 2012 04:32:22 +0000 (-0400)
Subject: check for ld support of -Bsymbolic-functions; disable shared if not avail
X-Git-Tag: v0.9.2~51
X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=498a100d05666024fd0d409a27709a03e7e58dd3;p=oweals%2Fmusl.git

check for ld support of -Bsymbolic-functions; disable shared if not avail

this issue affects the last gpl2 version of binutils, which some
people are still using out of aversion to gpl3. musl requires
-Bsymbolic-functions because it's the only way to make a libc.so
that's able to operate prior to dynamic linking but that still behaves
correctly with respect to global vars that may be moved to the main
program via copy relocations.
---

diff --git a/configure b/configure
index f765ca72..7e5a8dfb 100755
--- a/configure
+++ b/configure
@@ -267,6 +267,13 @@ fi
 tryflag CFLAGS_AUTO -fno-stack-protector
 tryldflag LDFLAGS_AUTO -Wl,--hash-style=sysv
 
+# Disable dynamic linking if ld is broken and can't do -Bsymbolic-functions
+LDFLAGS_DUMMY=
+tryldflag LDFLAGS_DUMMY -Wl,-Bsymbolic-functions || {
+printf "warning: disabling dynamic linking support\n"
+shared=no
+}
+
 
 printf "creating config.mak... "