[patch] Don't build crt*.o and libgcc with SSP

libstdc++-v3-Makefile.in.patch (text/plain), 3.97 KB, created by Magnus Granberg on 2009-10-18 12:19:33 UTC

2009-10-04	Magnus Granberg		<[e-mail]>

		* Makefile.in	We add -fno-stack-protector to
		BOOT_CFLAGS, LIBCFLAGS and LIBCXXFLAGS.
		* gcc/Makefile.in	Add -fno-PIE and -fno-stack-protector.
		Libgcc2 doesn't compile with -fstack-protector.
		Crtstuff doesn't compile with -fPIE and -fstack-protector.

--- Makefile.in	2009-04-25 06:10:29.000000000 +0200
+++ Makefile.in	2009-10-04 00:58:25.000000000 +0200
@@ -1,4 +1,3 @@
-
 # Makefile.in is generated from Makefile.tpl by 'autogen Makefile.def'.
 #
 # Makefile for directory with subdirs to build.
@@ -305,9 +304,12 @@
 BUILD_PREFIX = @BUILD_PREFIX@
 BUILD_PREFIX_1 = @BUILD_PREFIX_1@
 
+# Disable SSP if GCC use SSP to build with.
+ESPF_NOSSP_CFLAGS = -fno-stack-protector
+
 # Flags to pass to stage2 and later makes.  They are defined
 # here so that they can be overridden by Makefile fragments.
-BOOT_CFLAGS= -g -O2
+BOOT_CFLAGS= -g -O2 $(ESPF_NOSSP_CFLAGS)
 BOOT_LDFLAGS=
 BOOT_ADAFLAGS=-gnatpg -gnata
 
@@ -350,9 +352,9 @@
 
 CFLAGS = @CFLAGS@
 LDFLAGS = @LDFLAGS@
-LIBCFLAGS = $(CFLAGS)
+LIBCFLAGS = $(CFLAGS) $(ESPF_NOSSP_CFLAGS)
 CXXFLAGS = @CXXFLAGS@
-LIBCXXFLAGS = $(CXXFLAGS) -fno-implicit-templates
+LIBCXXFLAGS = $(CXXFLAGS) -fno-implicit-templates $(ESPF_NOSSP_CFLAGS)
 
 # Only build the C compiler for stage1, because that is the only one that
 # we can guarantee will build with the native compiler, and also it is the
--- gcc/Makefile.in	2009-05-22 01:17:37.000000000 +0200
+++ gcc/Makefile.in	2009-10-04 01:20:27.000000000 +0200
@@ -580,13 +580,18 @@
 INHIBIT_LIBC_CFLAGS = -Dinhibit_libc
 endif
 
+# We don't want __stack_chk_fail in crt* and libgcc2.a.
+# We don't want to compile crtbegin, crtend and crtbeginT with -fPIE.
+ESPF_NOPIE_CFLAGS = -fno-PIE
+ESPF_NOSSP_CFLAGS = -fno-stack-protector
+
 # Options to use when compiling libgcc2.a.
 #
 LIBGCC2_DEBUG_CFLAGS = -g
 LIBGCC2_CFLAGS = -O2 $(LIBGCC2_INCLUDES) $(GCC_CFLAGS) $(TARGET_LIBGCC2_CFLAGS) \
 		 $(LIBGCC2_DEBUG_CFLAGS) $(GTHREAD_FLAGS) \
 		 -DIN_LIBGCC2 -D__GCC_FLOAT_NOT_NEEDED \
-		 $(INHIBIT_LIBC_CFLAGS)
+		 $(INHIBIT_LIBC_CFLAGS) $(ESPF_NOSSP_CFLAGS)
 
 # Additional options to use when compiling libgcc2.a.
 # Some targets override this to -isystem include
@@ -599,7 +604,7 @@
 CRTSTUFF_CFLAGS = -O2 $(GCC_CFLAGS) $(INCLUDES) $(MULTILIB_CFLAGS) -g0 \
   -finhibit-size-directive -fno-inline-functions -fno-exceptions \
   -fno-zero-initialized-in-bss -fno-toplevel-reorder -fno-tree-vectorize \
-  $(INHIBIT_LIBC_CFLAGS)
+  $(INHIBIT_LIBC_CFLAGS) $(ESPF_NOSSP_CFLAGS)
 
 # Additional sources to handle exceptions; overridden by targets as needed.
 LIB2ADDEH = $(srcdir)/unwind-dw2.c $(srcdir)/unwind-dw2-fde.c \
@@ -1719,7 +1724,7 @@
 	echo LIBGCC_SYNC = '$(LIBGCC_SYNC)' >> tmp-libgcc.mvars
 	echo LIBGCC_SYNC_CFLAGS = '$(LIBGCC_SYNC_CFLAGS)' >> tmp-libgcc.mvars
 	echo CRTSTUFF_CFLAGS = '$(CRTSTUFF_CFLAGS)' >> tmp-libgcc.mvars
-	echo CRTSTUFF_T_CFLAGS = '$(CRTSTUFF_T_CFLAGS)' >> tmp-libgcc.mvars
+	echo CRTSTUFF_T_CFLAGS = '$(CRTSTUFF_T_CFLAGS) $(ESPF_NOPIE_CFLAGS)' >> tmp-libgcc.mvars
 	echo CRTSTUFF_T_CFLAGS_S = '$(CRTSTUFF_T_CFLAGS_S)' >> tmp-libgcc.mvars
 
 	mv tmp-libgcc.mvars libgcc.mvars
@@ -1754,12 +1759,14 @@
 $(T)crtbegin.o: crtstuff.c $(GCC_PASSES) $(TCONFIG_H) auto-host.h \
   gbl-ctors.h stmp-int-hdrs tsystem.h coretypes.h $(TM_H)
 	$(GCC_FOR_TARGET) $(CRTSTUFF_CFLAGS) $(CRTSTUFF_T_CFLAGS) \
+	$(ESPF_NOPIE_CFLAGS) \
 	  -c $(srcdir)/crtstuff.c -DCRT_BEGIN \
 	  -o $(T)crtbegin$(objext)
 
 $(T)crtend.o: crtstuff.c $(GCC_PASSES) $(TCONFIG_H) auto-host.h \
   gbl-ctors.h stmp-int-hdrs tsystem.h coretypes.h $(TM_H)
 	$(GCC_FOR_TARGET) $(CRTSTUFF_CFLAGS) $(CRTSTUFF_T_CFLAGS) \
+	$(ESPF_NOPIE_CFLAGS) \
 	  -c $(srcdir)/crtstuff.c -DCRT_END \
 	  -o $(T)crtend$(objext)
 
@@ -1780,6 +1787,7 @@
 $(T)crtbeginT.o: crtstuff.c $(GCC_PASSES) $(TCONFIG_H) auto-host.h \
   gbl-ctors.h stmp-int-hdrs tsystem.h coretypes.h $(TM_H)
 	$(GCC_FOR_TARGET) $(CRTSTUFF_CFLAGS) $(CRTSTUFF_T_CFLAGS) \
+	$(ESPF_NOPIE_CFLAGS) \
 	  -c $(srcdir)/crtstuff.c -DCRT_BEGIN -DCRTSTUFFT_O \
 	  -o $(T)crtbeginT$(objext)