From: Timo Sirainen <timo.sirainen@open-xchange.com>
Date: Mon, 23 Jan 2023 18:53:39 +0000 (+0200)
Subject: m4/dovecot.m4: Fix including all symbols from .a libs with new glibc
X-Git-Tag: 2.4.0~3170
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ad617e689301c2fb3e70139ce38802af5517dd1b;p=thirdparty%2Fdovecot%2Fcore.git

m4/dovecot.m4: Fix including all symbols from .a libs with new glibc

New glibc no longer has libdl, so the check for it no longer works.
Use -export-dynamic instead, which is used with both old and new glibc.
---

diff --git a/m4/dovecot.m4 b/m4/dovecot.m4
index aeff3b802b..3f9bf721e3 100644
--- a/m4/dovecot.m4
+++ b/m4/dovecot.m4
@@ -6,7 +6,7 @@ dnl This file is free software; the authors give
 dnl unlimited permission to copy and/or distribute it, with or without
 dnl modifications, as long as this notice is preserved.
 
-# serial 37
+# serial 38
 
 dnl
 dnl Check for support for D_FORTIFY_SOURCE=2
@@ -419,7 +419,7 @@ AC_DEFUN([DC_CC_WRAPPER],[
 	cat > cc-wrapper.sh <<_DC_EOF
 #!/bin/sh
 
-if echo "\$[*]" | grep -- -ldl > /dev/null; then
+if echo "\$[*]" | grep -- -export-dynamic > /dev/null; then
   # the binary uses plugins. make sure we include everything from .a libs
   exec $CC -Wl,--whole-archive \$[*] -Wl,--no-whole-archive
 else