Submitted By: Robert Connolly <robert at linuxfromscratch dot org> (ashes)
Date: 2007-10-07
Initial Package Version: 4.2.1
Upstream Status: Not Submitted
Origin: me
Description: This patch makes '-fPIE -pie -z now -z relro -z combreloc' the
default for C, C++, ObjC, and ObjC++, on x86.

Note that 'make profiledbootstrap' will still work... the profiled stages
will not be PIE's, but the final will be.

diff -Naur gcc-4.2.1.orig/gcc/Makefile.in gcc-4.2.1/gcc/Makefile.in
--- gcc-4.2.1.orig/gcc/Makefile.in	2007-05-31 15:37:38.000000000 +0000
+++ gcc-4.2.1/gcc/Makefile.in	2007-10-08 01:48:55.000000000 +0000
@@ -557,7 +557,7 @@
 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) -fno-PIE -fPIC
 
 # Additional options to use when compiling libgcc2.a.
 # Some targets override this to -isystem include
@@ -570,7 +570,7 @@
 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 \
-  $(INHIBIT_LIBC_CFLAGS)
+  $(INHIBIT_LIBC_CFLAGS) -fno-PIE -fPIC
 
 # Additional sources to handle exceptions; overridden by targets as needed.
 LIB2ADDEH = $(srcdir)/unwind-dw2.c $(srcdir)/unwind-dw2-fde.c \
diff -Naur gcc-4.2.1.orig/gcc/common.opt gcc-4.2.1/gcc/common.opt
--- gcc-4.2.1.orig/gcc/common.opt	2007-03-12 04:40:09.000000000 +0000
+++ gcc-4.2.1/gcc/common.opt	2007-10-08 01:47:32.000000000 +0000
@@ -669,7 +669,7 @@
 Generate position-independent code if possible (large mode)
 
 fPIE
-Common Report Var(flag_pie,2)
+Common Report Var(flag_pie,2) Init(2)
 Generate position-independent code for executables if possible (large mode)
 
 fpic
diff -Naur gcc-4.2.1.orig/gcc/config/i386/linux.h gcc-4.2.1/gcc/config/i386/linux.h
--- gcc-4.2.1.orig/gcc/config/i386/linux.h	2006-04-06 22:16:11.000000000 +0000
+++ gcc-4.2.1/gcc/config/i386/linux.h	2007-10-08 01:47:32.000000000 +0000
@@ -121,7 +121,8 @@
 #undef  ENDFILE_SPEC
 #define ENDFILE_SPEC \
   "%{ffast-math|funsafe-math-optimizations:crtfastmath.o%s} \
-   %{shared|pie:crtendS.o%s;:crtend.o%s} crtn.o%s"
+   %{shared|pie:crtendS.o%s;static|nopie|pg|p|profile:crtend.o%s;:crtendS.o%s} \
+   crtn.o%s"
 
 /* A C statement (sans semicolon) to output to the stdio stream
    FILE the assembler definition of uninitialized global DECL named
diff -Naur gcc-4.2.1.orig/gcc/config/linux.h gcc-4.2.1/gcc/config/linux.h
--- gcc-4.2.1.orig/gcc/config/linux.h	2006-02-18 11:12:51.000000000 +0000
+++ gcc-4.2.1/gcc/config/linux.h	2007-10-08 01:47:32.000000000 +0000
@@ -41,8 +41,9 @@
 #undef	STARTFILE_SPEC
 #if defined HAVE_LD_PIE
 #define STARTFILE_SPEC \
-  "%{!shared: %{pg|p|profile:gcrt1.o%s;pie:Scrt1.o%s;:crt1.o%s}} \
-   crti.o%s %{static:crtbeginT.o%s;shared|pie:crtbeginS.o%s;:crtbegin.o%s}"
+  "%{!shared: %{pg|p|profile:gcrt1.o%s;pie:Scrt1.o%s;static|nopie:crt1.o%s;: \
+   Scrt1.o%s}} crti.o%s %{static:crtbeginT.o%s;shared|pie:crtbeginS.o%s; \
+   nopie|pg|p|profile:crtbegin.o%s;:crtbeginS.o%s}"
 #else
 #define STARTFILE_SPEC \
   "%{!shared: %{pg|p|profile:gcrt1.o%s;:crt1.o%s}} \
diff -Naur gcc-4.2.1.orig/gcc/gcc.c gcc-4.2.1/gcc/gcc.c
--- gcc-4.2.1.orig/gcc/gcc.c	2007-03-05 20:37:05.000000000 +0000
+++ gcc-4.2.1/gcc/gcc.c	2007-10-08 01:47:32.000000000 +0000
@@ -684,7 +684,11 @@
 
 #ifndef LINK_PIE_SPEC
 #ifdef HAVE_LD_PIE
-#define LINK_PIE_SPEC "%{pie:-pie} "
+#define LINK_PIE_SPEC "%{pie:-pie}\
+  %{static|Bstatic|shared|Bshareable|i|r|pie|nopie:;:-pie}\
+  %{!static:%{!Bstatic: %{norelro:-z norelro;:-z relro}\
+  %{nocombreloc:-z nocombreloc;:-z combreloc}\
+  %{nonow:-z lazy;:-z now} }} "
 #else
 #define LINK_PIE_SPEC "%{pie:} "
 #endif
@@ -797,7 +801,10 @@
 
 /* NB: This is shared amongst all front-ends.  */
 static const char *cc1_options =
-"%{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\
+"%{static|D__KERNEL__:-fno-PIC -fno-PIE} %{fPIC:-fno-PIE}\
+ %{shared|nostdlib|nostartfiles:-fno-PIE -fPIC}\
+ %{static:%{pie:%e-static and -pie are incompatible}}\
+ %{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\
  %1 %{!Q:-quiet} -dumpbase %B %{d*} %{m*} %{a*}\
  %{c|S:%{o*:-auxbase-strip %*}%{!o*:-auxbase %b}}%{!c:%{!S:-auxbase %b}}\
  %{g*} %{O*} %{W*&pedantic*} %{w} %{std*&ansi&trigraphs}\