Makefile.in (GCC_WARN_CFLAGS): Add $(WERROR) $($@-warn) (gtype-desc.o-warn...

gcc:
	* Makefile.in (GCC_WARN_CFLAGS): Add $(WERROR) $($@-warn)
	(gtype-desc.o-warn, c-decl.o-warn, varasm.o-warn, gcc.o-warn,
	insn-conditions.o-warn, out_object_file, gengtype-yacc.o-warn,
	c-parse.o-warn): Add -Wno-error.
	(STAGE2_FLAGS_TO_PASS): Add WERROR="@WERROR@".

	* configure.in (--enable-werror): Add new flag.
	* doc/install.texi (--enable-werror): Document.
	* configure: Regenerate.

	* objc/Make-lang.in (objc/objc-parse.o-warn): Add -Wno-error.

cp:
	Make-lang.in (cp/decl.o-warn): Add -Wno-error.

f:
	Make-lang.in (f/sta.o-warn): Add -Wno-error.

java:
	Make-lang.in (jvspec.o-warn): Add -Wno-error.

From-SVN: r61544

gcc/ChangeLog

+2003-01-21  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>
+
+	* Makefile.in (GCC_WARN_CFLAGS): Add $(WERROR) $($@-warn)
+	(gtype-desc.o-warn, c-decl.o-warn, varasm.o-warn, gcc.o-warn,
+	insn-conditions.o-warn, out_object_file, gengtype-yacc.o-warn,
+	c-parse.o-warn): Add -Wno-error.
+	(STAGE2_FLAGS_TO_PASS): Add WERROR="@WERROR@".
+
+	* configure.in (--enable-werror): Add new flag.
+	* doc/install.texi (--enable-werror): Document.
+	* configure: Regenerate.
+
+	* objc/Make-lang.in (objc/objc-parse.o-warn): Add -Wno-error.
+
 2003-01-21  Andreas Schwab  <schwab@suse.de>
 
 	* genautomata.c (output_internal_insn_latency_func): Fix missing

gcc/Makefile.in

@@ -109,7 +109,20 @@ VALGRIND_DRIVER_DEFINES = @valgrind_path_defines@
 
 # This is how we control whether or not the additional warnings are applied.
 .-warn = $(STRICT_WARN)
-GCC_WARN_CFLAGS = $(LOOSE_WARN) $($(@D)-warn) $(NOCOMMON_FLAG)
+GCC_WARN_CFLAGS = $(LOOSE_WARN) $($(@D)-warn) $(NOCOMMON_FLAG) $(WERROR) $($@-warn)
+
+# These files are to have -Werror bypassed in stage2:
+# These contain warnings from the PCH merge.
+gtype-desc.o-warn = -Wno-error
+c-decl.o-warn = -Wno-error
+# These are very hard to completely clean due to target complexities.
+varasm.o-warn = -Wno-error
+gcc.o-warn = -Wno-error
+insn-conditions.o-warn = -Wno-error
+@out_object_file@-warn = -Wno-error
+# Bison-1.75 output often yields (harmless) -Wtraditional warnings
+gengtype-yacc.o-warn = -Wno-error
+c-parse.o-warn = -Wno-error
 
 # All warnings have to be shut off in stage1 if the compiler used then
 # isn't gcc; configure determines that.  WARN_CFLAGS will be either
@@ -3349,6 +3362,7 @@ STAGE2_FLAGS_TO_PASS = \
 	CFLAGS="$(BOOT_CFLAGS)" \
 	LDFLAGS="$(BOOT_LDFLAGS)" \
 	WARN_CFLAGS="\$$(GCC_WARN_CFLAGS)" \
+	WERROR="@WERROR@" \
 	STRICT_WARN="$(STRICT2_WARN)" \
 	libdir=$(libdir) \
 	LANGUAGES="$(LANGUAGES)" \

gcc/configure.in

@@ -265,6 +265,16 @@ AC_ARG_ENABLE(multilib,
 [], [enable_multilib=yes])
 AC_SUBST(enable_multilib)
 
+# Enable -Werror in bootstrap stage2 and later.
+# Change the default to "no" on release branches.
+AC_ARG_ENABLE(werror, 
+[  --enable-werror         enable -Werror in bootstrap stage2 and later], [],
+[enable_werror=yes])
+if test x$enable_werror = xyes ; then
+  WERROR=-Werror
+fi
+AC_SUBST(WERROR)
+
 # Enable expensive internal checks
 AC_ARG_ENABLE(checking,
 [  --enable-checking[=LIST]

gcc/cp/ChangeLog

+2003-01-21  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>
+
+	Make-lang.in (cp/decl.o-warn): Add -Wno-error.
+
 2003-01-17  Jason Merrill  <jason@redhat.com>
 
 	PR c++/9167, c++/9358

gcc/cp/Make-lang.in

@@ -90,6 +90,8 @@ CXX_OBJS = cp/call.o cp/decl.o cp/expr.o cp/pt.o cp/typeck2.o \
 
 # Use loose warnings for this front end.
 cp-warn =
+# This contains warnings from the PCH merge.
+cp/decl.o-warn = -Wno-error
 
 cc1plus$(exeext): $(CXX_OBJS) $(CXX_C_OBJS) $(BACKEND) \
 		  libcpp.a $(LIBDEPS)

gcc/doc/install.texi

@@ -821,6 +821,17 @@ Specify that the machine does not have a floating point unit.  This
 option only applies to @samp{m68k-sun-sunos@var{n}}.  On any other
 system, @option{--nfp} has no effect.
 
+@item --enable-werror
+@itemx --disable-werror
+@itemx --enable-werror=yes
+@itemx --enable-werror=no
+When you specify this option, it controls whether certain files in the
+compiler are built with @option{-Werror} in bootstrap stage2 and later.
+If you don't specify it, @option{-Werror} is turned on for the main
+development trunk.  However it defaults to off for release branches and
+final releases.  The specific files which get @option{-Werror} are
+controlled by the Makefiles.
+
 @item --enable-checking
 @itemx --enable-checking=@var{list}
 When you specify this option, the compiler is built to perform checking
@@ -975,7 +986,10 @@ be ignored.
 
 It is normal to have compiler warnings when compiling certain files.
 Unless you are a GCC developer, you can generally ignore these warnings
-unless they cause compilation to fail.
+unless they cause compilation to fail.  Developers should attempt to fix
+any warnings encountered, however they can temporarily continue past
+warnings-as-errors by specifying the configure flag
+@option{--disable-werror}.
 
 On certain old systems, defining certain environment variables such as
 @env{CC} can interfere with the functioning of @command{make}.

gcc/f/ChangeLog

+Tue Jan 21 08:42:12 2003  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>
+
+	Make-lang.in (f/sta.o-warn): Add -Wno-error.
+
 Thu Jan 16 10:53:16 2003  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>
 
 	* Make-lang.in (f/target.o): Depend on toplev.h.

gcc/f/Make-lang.in

@@ -93,6 +93,8 @@ F77_OBJS = f/bad.o f/bit.o f/bld.o f/com.o f/data.o f/equiv.o f/expr.o \
 
 # Use loose warnings for this front end.
 f-warn =
+# type-punning warning
+f/sta.o-warn = -Wno-error
 
 f771$(exeext): $(F77_OBJS) $(BACKEND) $(LIBDEPS)
 	rm -f f771$(exeext)

gcc/java/ChangeLog

+2003-01-21  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>
+
+	Make-lang.in (jvspec.o-warn): Add -Wno-error.
+
 2003-01-18  Kazu Hirata  <kazu@cs.umass.edu>
 
 	* check-init.c: Fix comment typos.

gcc/java/Make-lang.in

@@ -124,6 +124,8 @@ JVGENMAIN_OBJS = java/jvgenmain.o java/mangle_name.o errors.o
 
 # Use loose warnings for this front end.
 java-warn =
+# String length warnings
+jvspec.o-warn = -Wno-error
 
 jc1$(exeext): $(JAVA_OBJS) $(BACKEND) $(LIBDEPS)
 	rm -f $@

gcc/objc/Make-lang.in

@@ -47,6 +47,8 @@ OBJECTIVE-C objective-c: cc1obj$(exeext)
 
 # Use maximal warnings for this front end.
 objc-warn = $(STRICT_WARN)
+# Bison-1.75 output yields (harmless) -Wtraditional warnings
+objc/objc-parse.o-warn = -Wno-error
 
 # Language-specific object files for Objective C.
 OBJC_OBJS = objc/objc-lang.o objc/objc-parse.o objc/objc-act.o