From 498d92d0286a0fc92d8cec2758d449f18e042bc4 Mon Sep 17 00:00:00 2001
From: Michal Ludvig <mludvig@logix.net.nz>
Date: Wed, 4 Nov 2009 23:42:16 +0000
Subject: [PATCH] * configure.ac, Makefile.am: Test if GCC accepts
-Wno-pointer-sign
git-svn-id: svn://svn.savannah.nongnu.org/avrdude/trunk@878 81a1dc3b-b13d-400b-aceb-764788c761c2
---
avrdude/ChangeLog | 4 ++++
avrdude/Makefile.am | 2 +-
avrdude/configure.ac | 19 +++++++++++++++++++
3 files changed, 24 insertions(+), 1 deletion(-)
diff --git a/avrdude/ChangeLog b/avrdude/ChangeLog
index 761d01d9..ec87efad 100644
--- a/avrdude/ChangeLog
+++ b/avrdude/ChangeLog
@@ -1,3 +1,7 @@
+2009-11-04 Michal Ludvig <mludvig@logix.net.nz>
+
+ * configure.ac, Makefile.am: Test if GCC accepts -Wno-pointer-sign
+
2009-11-04 Michal Ludvig <mludvig@logix.net.nz>
* buspirate.c: Implemented 'BinMode' support for
diff --git a/avrdude/Makefile.am b/avrdude/Makefile.am
index e51a4c8d..9a68852d 100644
--- a/avrdude/Makefile.am
+++ b/avrdude/Makefile.am
@@ -51,7 +51,7 @@ libavrdude_a_CPPFLAGS = -DCONFIG_DIR=\"$(sysconfdir)\"
avrdude_CFLAGS = @ENABLE_WARNINGS@
-libavrdude_a_CFLAGS = @ENABLE_WARNINGS@ -Wno-sign-compare -Wno-sign-conversion -Wno-pointer-sign
+libavrdude_a_CFLAGS = @ENABLE_WARNINGS@
avrdude_LDADD = $(top_builddir)/$(noinst_LIBRARIES) @LIBUSB@ @LIBHID@ -lm
diff --git a/avrdude/configure.ac b/avrdude/configure.ac
index d082c95d..6e80342d 100644
--- a/avrdude/configure.ac
+++ b/avrdude/configure.ac
@@ -254,6 +254,25 @@ AC_SUBST(WINDOWS_DIRS,$WINDOWS_DIRS)
# If we are compiling with gcc, enable all warning and make warnings errors.
if test "$GCC" = yes; then
ENABLE_WARNINGS="-Wall"
+
+ # does this compiler support -Wno-pointer-sign ?
+ AC_MSG_CHECKING([if gcc accepts -Wno-pointer-sign ])
+
+ safe_CFLAGS=$CFLAGS
+ CFLAGS="$ENABLE_WARNINGS -Wno-pointer-sign"
+
+ AC_TRY_COMPILE(, [ int main () { return 0 ; } ], [
+ no_pointer_sign=yes
+ AC_MSG_RESULT([yes])
+ ], [
+ no_pointer_sign=no
+ AC_MSG_RESULT([no])
+ ])
+ CFLAGS=$safe_CFLAGS
+
+ if test x$no_pointer_sign = xyes; then
+ ENABLE_WARNINGS="$ENABLE_WARNINGS -Wno-pointer-sign"
+ fi
fi
AC_SUBST(ENABLE_WARNINGS,$ENABLE_WARNINGS)