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Add (default disabled) --enable-werror option to configure

Useful for example during development or automated builds, to make the
build error out if new warnings are introduced.

Signed-off-by: Steffan Karger <steffan@karger.me>
Acked-by: Gert Doering <gert@greenie.muc.de>
Message-Id: <1401359947-31144-1-git-send-email-steffan@karger.me>
URL: http://article.gmane.org/gmane.network.openvpn.devel/8747
Signed-off-by: Gert Doering <gert@greenie.muc.de>

Steffan Karger authored on 2014/05/29 19:39:07
Showing 1 changed files
... ...
@@ -244,6 +244,13 @@ AC_ARG_ENABLE(
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 )
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 AC_ARG_ENABLE(
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+	[werror],
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+	[AS_HELP_STRING([--enable-werror], [promote compiler warnings to errors, will cause builds to fail is the compiler issues warnings (debugging option) @<:@default=no@:>@])],
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+	,
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+	[enable_werror="no"]
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+)
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+
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+AC_ARG_ENABLE(
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 	[strict-options],
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 	[AS_HELP_STRING([--enable-strict-options], [enable strict options check between peers (debugging option) @<:@default=no@:>@])],
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 	,
... ...
@@ -1137,6 +1144,9 @@ fi
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 if test "${enable_strict}" = "yes"; then
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 	CFLAGS="${CFLAGS} -Wall -Wno-unused-parameter -Wno-unused-function"
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 fi
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+if test "${enable_werror}" = "yes"; then
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+	CFLAGS="${CFLAGS} -Werror"
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+fi
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 if test "${WIN32}" = "yes"; then
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 	test -z "${MAN2HTML}" && AC_MSG_ERROR([man2html is required for win32])