[nasm:master] configure.in: add --enable-werror option

[nasm-bot f. H. P. A. <hp...@li...>]

Commit-ID:  44a609b203734f7b76ab4fbb80e6d17cb0884151
Gitweb:     http://repo.or.cz/w/nasm.git?a=commitdiff;h=44a609b203734f7b76ab4fbb80e6d17cb0884151
Author:     H. Peter Anvin <hp...@li...>
AuthorDate: Thu, 18 Feb 2016 12:09:31 -0800
Committer:  H. Peter Anvin <hp...@li...>
CommitDate: Thu, 18 Feb 2016 12:09:31 -0800

configure.in: add --enable-werror option

Add an option to compile with -Werror, useful for development.

Change --with-ccache to --enable-ccache to match guidelines.

Signed-off-by: H. Peter Anvin <hp...@li...>


---
 configure.in | 19 +++++++++++--------
 1 file changed, 11 insertions(+), 8 deletions(-)

diff --git a/configure.in b/configure.in
index 5164f4d..6319206 100644
--- a/configure.in
+++ b/configure.in
@@ -1,6 +1,6 @@
 dnl Process this file with autoconf 2.61 or later to produce
 dnl a configure script.
-AC_PREREQ(2.61)
+AC_PREREQ(2.63)
 AC_INIT(config.h.in)
 AC_CONFIG_HEADERS(config.h)
 
@@ -176,14 +176,17 @@ fi
 dnl
 dnl support cchace
 dnl
-AC_ARG_WITH([ccache],
-            [AC_HELP_STRING([--with-ccache],
-                            [Compile with ccache])],
-          [CC="ccache $CC"],
-          [])
+AC_ARG_ENABLE([ccache],
+[AC_HELP_STRING([--with-ccache], [compile with ccache])],
+[CC="ccache $CC"],
+[])
 
 PA_ADD_CFLAGS([-pedantic])
-PA_ADD_CFLAGS([-Werror=implicit])
+AC_ARG_ENABLE([werror],
+[AC_HELP_STRING([--enable-werror],
+[compile with -Werror to error out on any warning])],
+[PA_ADD_CFLAGS([-Werror])],
+[PA_ADD_CFLAGS([-Werror=implicit])
 PA_ADD_CFLAGS([-Werror=missing-braces])
 PA_ADD_CFLAGS([-Werror=return-type])
 PA_ADD_CFLAGS([-Werror=trigraphs])
@@ -192,7 +195,7 @@ PA_ADD_CFLAGS([-Werror=strict-prototypes])
 PA_ADD_CFLAGS([-Werror=missing-prototypes])
 PA_ADD_CFLAGS([-Werror=missing-declarations])
 PA_ADD_CFLAGS([-Werror=comment])
-PA_ADD_CFLAGS([-Werror=vla])
+PA_ADD_CFLAGS([-Werror=vla])])
 
 AC_OUTPUT_COMMANDS([mkdir -p output])
 AC_OUTPUT(Makefile rdoff/Makefile doc/Makefile)