re PR bootstrap/18058 (Bootstrap fails with non-GCC compilers)

	PR bootstrap/18058
	* configure.in: Add -fkeep-inline-functions to CFLAGS for stage 1
	if the bootstrap compiler is a GCC version that supports it.
	* configure: Regenerate.
gcc/
	* Makefile.in (BUILD_RTL): Add build/vec.o.
	(build/gencondmd.o): Filter out -fkeep-inline-functions.
	(build/genextract): Delete.
	(build/genautomata): Likewise.

From-SVN: r115172

ChangeLog

+2006-07-04  Eric Botcazou  <ebotcazou@libertysurf.fr>
+
+	PR bootstrap/18058
+	* configure.in: Add -fkeep-inline-functions to CFLAGS for stage 1
+	if the bootstrap compiler is a GCC version that supports it.
+	* configure: Regenerate.
+
 2006-07-03  Paolo Bonzini  <bonzini@gnu.org>
 
 	* configure.in: Fix thinkos in previous check-in.

configure

@@ -7257,6 +7257,37 @@ case $build in
     ;;
 esac
 
+# This is aimed to mimic bootstrap with a non-GCC compiler to catch problems.
+if test "$GCC" = yes; then
+  saved_CFLAGS="$CFLAGS"
+
+  # Pass -fkeep-inline-functions for stage 1 if the GCC version supports it.
+  CFLAGS="$CFLAGS -fkeep-inline-functions"
+  echo $ac_n "checking whether -fkeep-inline-functions is supported""... $ac_c" 1>&6
+echo "configure:3894: checking whether -fkeep-inline-functions is supported" >&5
+  cat > conftest.$ac_ext <<EOF
+#line 3896 "configure"
+#include "confdefs.h"
+
+int main() {
+
+; return 0; }
+EOF
+if { (eval echo configure:3903: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+  rm -rf conftest*
+  echo "$ac_t""yes" 1>&6; stage1_cflags="$stage1_cflags -fkeep-inline-functions"
+else
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
+  rm -rf conftest*
+  echo "$ac_t""no" 1>&6
+fi
+rm -f conftest*
+
+  CFLAGS="$saved_CFLAGS"
+fi
+
+
 
 # Enable -Werror in bootstrap stage2 and later.
 # Change the default to "no" on release branches.

configure.in

@@ -2411,6 +2411,21 @@ case $build in
     stage1_cflags="-g -no-cpp-precomp -DHAVE_DESIGNATED_INITIALIZERS=0"
     ;;
 esac
+
+# This is aimed to mimic bootstrap with a non-GCC compiler to catch problems.
+if test "$GCC" = yes; then
+  saved_CFLAGS="$CFLAGS"
+
+  # Pass -fkeep-inline-functions for stage 1 if the GCC version supports it.
+  CFLAGS="$CFLAGS -fkeep-inline-functions"
+  AC_MSG_CHECKING([whether -fkeep-inline-functions is supported])
+  AC_TRY_COMPILE(,,
+    [AC_MSG_RESULT([yes]); stage1_cflags="$stage1_cflags -fkeep-inline-functions"],
+    [AC_MSG_RESULT([no])])
+
+  CFLAGS="$saved_CFLAGS"
+fi
+
 AC_SUBST(stage1_cflags)
 
 # Enable -Werror in bootstrap stage2 and later.

gcc/ChangeLog

+2006-07-04  Eric Botcazou  <ebotcazou@libertysurf.fr>
+
+	PR bootstrap/18058
+	* Makefile.in (BUILD_RTL): Add build/vec.o.
+	(build/gencondmd.o): Filter out -fkeep-inline-functions.
+	(build/genextract): Delete.
+	(build/genautomata): Likewise.
+
 2006-07-04  Alan Modra  <amodra@bigpond.net.au>
 
 	PR target/28207

gcc/Makefile.in

@@ -854,7 +854,7 @@ LDEXP_LIB = @LDEXP_LIB@
 # even if we are cross-building GCC.
 BUILD_LIBS = $(BUILD_LIBIBERTY)
 
-BUILD_RTL = build/rtl.o build/read-rtl.o build/ggc-none.o \
+BUILD_RTL = build/rtl.o build/read-rtl.o build/ggc-none.o build/vec.o \
 	    build/min-insn-modes.o build/gensupport.o build/print-rtl.o
 BUILD_ERRORS = build/errors.o
 
@@ -2956,6 +2956,11 @@ build/gencondmd.o : build/gencondmd.c $(BCONFIG_H) $(SYSTEM_H)		\
   coretypes.h $(GTM_H) insn-constants.h $(RTL_H) $(TM_P_H)		\
   $(FUNCTION_H) $(REGS_H) $(RECOG_H) $(REAL_H) output.h $(FLAGS_H)	\
   $(RESOURCE_H) toplev.h reload.h except.h tm-constrs.h
+# This pulls in tm-pred.h which contains inline functions wrapping up
+# predicates from the back-end so those functions must be discarded.
+# No big deal since gencondmd.c is a dummy file for non-GCC compilers.
+build/gencondmd.o : \
+  BUILD_CFLAGS := $(filter-out -fkeep-inline-functions, $(BUILD_CFLAGS))
 
 # ...these are the programs themselves.
 build/genattr.o : genattr.c $(RTL_BASE_H) $(BCONFIG_H) $(SYSTEM_H)	\
@@ -3020,10 +3025,7 @@ genprogmd = attr attrtab automata codes conditions config constants emit \
 	    extract flags mddeps opinit output peep preds recog
 $(genprogmd:%=build/gen%$(build_exeext)): $(BUILD_RTL) $(BUILD_ERRORS)
 
-# These programs need files over and above what they get from the above list.
-build/genextract$(build_exeext) : build/vec.o
-
-build/genautomata$(build_exeext) : build/vec.o
+# These programs need libs over and above what they get from the above list.
 build/genautomata$(build_exeext) : BUILD_LIBS += -lm
 
 # These programs are not linked with the MD reader.