44 lines
1.6 KiB
Diff
44 lines
1.6 KiB
Diff
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From d56a11beb9b181fd91a70a6d703dfbdfe887122a Mon Sep 17 00:00:00 2001
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From: Baruch Siach <baruch@tkos.co.il>
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Date: Thu, 13 Jan 2022 17:56:10 +0200
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Subject: [PATCH] configure.ac: correct the getprotobynumber_r test
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The AC_TRY_COMPILE test succeeds even when libc does not provide the
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tested symbol. The compiler produces a warning, but exits successfully.
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Use AC_TRY_LINK that will only succeeds if libc provides the symbol.
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This fixes build with musl libc that does not support
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getprotobynumber_r().
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Signed-off-by: Baruch Siach <baruch@tkos.co.il>
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---
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Upstream status: sent to socat@dest-unreach.org
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configure.ac | 6 +++---
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1 file changed, 3 insertions(+), 3 deletions(-)
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diff --git a/configure.ac b/configure.ac
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index d4acc9e7e6f5..973a7f2218c9 100644
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--- a/configure.ac
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+++ b/configure.ac
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@@ -137,13 +137,13 @@ AC_MSG_RESULT($sc_cv_have_prototype_hstrerror)
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# getprotobynumber_r() is not standardized
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AC_MSG_CHECKING(for getprotobynumber_r() variant)
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AC_CACHE_VAL(sc_cv_getprotobynumber_r,
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-[AC_TRY_COMPILE([#include <stddef.h>
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+[AC_TRY_LINK([#include <stddef.h>
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#include <netdb.h>],[getprotobynumber_r(1,NULL,NULL,1024,NULL);],
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[sc_cv_getprotobynumber_r=1; tmp_bynum_variant=Linux],
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- [AC_TRY_COMPILE([#include <stddef.h>
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+ [AC_TRY_LINK([#include <stddef.h>
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#include <netdb.h>],[getprotobynumber_r(1,NULL,NULL,1024);],
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[sc_cv_getprotobynumber_r=2; tmp_bynum_variant=Solaris],
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- [AC_TRY_COMPILE([#include <stddef.h>
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+ [AC_TRY_LINK([#include <stddef.h>
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#include <netdb.h>],[getprotobynumber_r(1,NULL,NULL);],
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[sc_cv_getprotobynumber_r=3; tmp_bynum_variant=AIX],
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--
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2.34.1
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