From 09a2c9c2e20c4cfbbde8748d3c00402ff70d92c4 Mon Sep 17 00:00:00 2001
From: Tristan Gingold <tgingold@free.fr>
Date: Sat, 20 May 2017 05:18:23 +0200
Subject: configure: add --disable-werror

For #350
---
 Makefile.in | 3 +++
 configure   | 6 +++++-
 2 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/Makefile.in b/Makefile.in
index 5cc0b8008..4cef9600e 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -34,6 +34,7 @@ LDFLAGS=@LDFLAGS@
 LIBBACKTRACE=@backtrace_lib@
 llvm_be=@llvm_be@
 build_mode=@build_mode@
+enable_werror=@enable_werror@
 
 INSTALL_PROGRAM=install -m 755
 INSTALL_DATA=install -m 644
@@ -78,7 +79,9 @@ WARN_CFLAGS=-Wall
 GNAT_BARGS=-bargs -E
 
 # Warnings as errors.  Comment this line if a warning looks not valid.
+ifeq "$(enable_werror)" "true"
 GNATFLAGS+=-gnatwe
+endif
 
 target=$(build)
 #target=i686-pc-linux-gnu
diff --git a/configure b/configure
index bb60b3ee7..7c99a7bde 100755
--- a/configure
+++ b/configure
@@ -18,6 +18,7 @@ backtrace_lib=
 llvm_be=llvm
 build=
 build_mode=
+enable_werror=true
 EXEEXT=
 SOEXT=.so
 PIC_FLAGS=-fPIC
@@ -25,7 +26,7 @@ PIC_FLAGS=-fPIC
 show_help=no
 progname=$0
 
-subst_vars="CC CXX GNATMAKE CFLAGS LDFLAGS build srcdir abs_srcdir prefix backend libdirsuffix libdirreverse gcc_src_dir llvm_config llvm_be backtrace_lib build_mode EXEEXT SOEXT PIC_FLAGS default_pie"
+subst_vars="CC CXX GNATMAKE CFLAGS LDFLAGS build srcdir abs_srcdir prefix backend libdirsuffix libdirreverse gcc_src_dir llvm_config llvm_be backtrace_lib build_mode EXEEXT SOEXT PIC_FLAGS default_pie enable_werror"
 
 # Find srcdir
 srcdir=`dirname $progname`
@@ -70,6 +71,8 @@ for opt do
       --with-llvm-config) llvm_config="llvm-config"; backend=llvm;;
       --with-llvm-config=*) llvm_config="$optarg"; backend=llvm;;
       --with-backtrace-lib=*) backtrace_lib="$optarg";;
+      --enable-werror) enable_werror=true;;
+      --disable-werror) enable_werror=false;;
       --enable-coverage) build_mode="coverage";;
       -h|-help|--help) show_help=yes;;
       *) echo "$0: unknown option $opt; try $0 --help"
@@ -90,6 +93,7 @@ Options [defaults in brackets]:
   --with-llvm-config=PATH     use llvm from PATH (needs llvm 3.5 - 3.9)
   --with-backtrace-lib=LIB.a  link with libbacktrace LIB.a to display a
                               backtrace on errors (only for llvm).
+  --disable-werror            warnings don't stop build
 EOF
 exit 0
 fi
-- 
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