From 88c78901503d50d0a62d85c96994ca4d67ab61e0 Mon Sep 17 00:00:00 2001
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From: Fabrice Fontaine <fontaine.fabrice@gmail.com>
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Date: Fri, 13 Nov 2020 20:50:27 +0100
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Subject: [PATCH] Add an option to disable -Werror
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Allow the user to disable -Werror to avoid the following build failure
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with gcc 4.8:
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libtac/lib/magic.c:138:13: error: ignoring return value of 'read', declared with attribute warn_unused_result [-Werror=unused-result]
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(void) read(rfd, &seed, sizeof(seed));
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^
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Fixes:
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- http://autobuild.buildroot.org/results/5c17226f12eba104d907693ec37fc101cc6d447f
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Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
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---
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Makefile.am | 6 +++++-
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configure.ac | 3 +++
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2 files changed, 8 insertions(+), 1 deletion(-)
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diff --git a/Makefile.am b/Makefile.am
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index 0be3cdb..4a137e9 100644
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--- a/Makefile.am
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+++ b/Makefile.am
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@@ -8,7 +8,11 @@
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ACLOCAL_AMFLAGS = -I config
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AUTOMAKE_OPTIONS = subdir-objects
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-AM_CFLAGS = -Wall -Wextra -Werror
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+AM_CFLAGS = -Wall -Wextra
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+
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+if ENABLE_WERROR
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+AM_CFLAGS += -Werror
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+endif
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if TACC
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bin_PROGRAMS = tacc
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diff --git a/configure.ac b/configure.ac
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index d0c5eba..dd8a966 100644
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--- a/configure.ac
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+++ b/configure.ac
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@@ -100,6 +100,9 @@ AC_SUBST(pamdir)
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AC_ARG_ENABLE(doc, AS_HELP_STRING([--disable-doc], [do not build docs]))
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AM_CONDITIONAL(DOC, test "x$enable_doc" != "xno")
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+AC_ARG_ENABLE(werror, AS_HELP_STRING([--disable-werror], [do not build with -Werror]))
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+AM_CONDITIONAL(ENABLE_WERROR, test "x$enable_werror" != "xno")
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+
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dnl --------------------------------------------------------------------
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dnl Switch for run-time debugging
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AC_ARG_ENABLE(runtime-debugging, [AS_HELP_STRING([--enable-runtime-debugging],
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--
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2.28.0
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