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--- a/gcc/config/gnu-user.h 2013-08-20 10:31:40.000000000 +0200
+++ b/gcc/config/gnu-user.h 2013-10-23 22:01:42.337238981 +0200
@@ -134,3 +134,17 @@ see the files COPYING3 and COPYING.RUNTI
/* Additional libraries needed by -static-libtsan. */
#undef STATIC_LIBTSAN_LIBS
#define STATIC_LIBTSAN_LIBS "-ldl -lpthread"
+
+/* We use this to make the compiler use -fPIE as default and link
+ with -pie. */
+#ifdef ENABLE_DEFAULT_PIE
+#define PIE_DRIVER_SELF_SPECS \
+"%{pie|fpic|fPIC|fpie|fPIE|fno-pic|fno-PIC|fno-pie|fno-PIE| \
+ shared|static|nostdlib|nodefaultlibs|nostartfiles:;:-fPIE -pie}"
+#else
+#define PIE_DRIVER_SELF_SPECS ""
+#endif
+
+#ifndef GNU_DRIVER_SELF_SPECS
+#define GNU_DRIVER_SELF_SPECS PIE_DRIVER_SELF_SPECS
+#endif
--- a/gcc/config/i386/gnu-user-common.h 2013-01-10 21:38:27.000000000 +0100
+++ b/gcc/config/i386/gnu-user-common.h 2013-10-23 17:37:45.432767049 +0200
@@ -70,3 +70,8 @@ along with GCC; see the file COPYING3.
/* Static stack checking is supported by means of probes. */
#define STACK_CHECK_STATIC_BUILTIN 1
+
+/* Use GNU_DRIVER_SELF_SPECS. */
+#ifndef DRIVER_SELF_SPECS
+#define DRIVER_SELF_SPECS GNU_DRIVER_SELF_SPECS
+#endif
--- a/gcc/configure.ac 2013-09-25 18:10:35.000000000 +0200
+++ b/gcc/configure.ac 2013-10-22 21:26:56.287602139 +0200
@@ -5434,6 +5434,30 @@ if test x"${LINKER_HASH_STYLE}" != x; th
[The linker hash style])
fi
+# Check whether --enable-default-pie was given and target have the support.
+AC_ARG_ENABLE(default-pie,
+[AS_HELP_STRING([--enable-default-pie],
+ [enable Position Independent Executable as default])],
+enable_default_pie=$enableval,
+enable_default_pie=no)
+if test x$enable_default_pie = xyes; then
+ AC_MSG_CHECKING(if $target supports default PIE)
+ enable_default_pie=no
+ case $target in
+ i?86*-*-linux* | x86_64*-*-linux*)
+ enable_default_pie=yes
+ ;;
+ *)
+ ;;
+ esac
+ AC_MSG_RESULT($enable_default_pie)
+fi
+if test x$enable_default_pie == xyes ; then
+ AC_DEFINE(ENABLE_DEFAULT_PIE, 1,
+ [Define if your target supports default PIE and it is enabled.])
+fi
+AC_SUBST([enable_default_pie])
+
# Configure the subdirectories
# AC_CONFIG_SUBDIRS($subdirs)
--- a/gcc/Makefile.in 2013-10-02 21:52:27.000000000 +0200
+++ b/gcc/Makefile.in 2013-10-24 17:46:22.055357122 +0200
@@ -957,14 +957,23 @@ CONTEXT_H = context.h
# cross compiler which does not use the native headers and libraries.
INTERNAL_CFLAGS = -DIN_GCC @CROSS@
+# We don't want to compile the compiler with -fPIE, it make PCH fail.
+enable_default_pie = @enable_default_pie@
+ifeq ($(enable_default_pie),yes)
+NOPIE_CFLAGS = -fno-PIE
+else
+NOPIE_CFLAGS=
+endif
+
# This is the variable actually used when we compile. If you change this,
# you probably want to update BUILD_CFLAGS in configure.ac
-ALL_CFLAGS = $(T_CFLAGS) $(CFLAGS-$@) \
+ALL_CFLAGS = $(NOPIE_CFLAGS) $(T_CFLAGS) $(CFLAGS-$@) \
$(CFLAGS) $(INTERNAL_CFLAGS) $(COVERAGE_FLAGS) $(WARN_CFLAGS) @DEFS@
# The C++ version.
-ALL_CXXFLAGS = $(T_CFLAGS) $(CFLAGS-$@) $(CXXFLAGS) $(INTERNAL_CFLAGS) \
- $(COVERAGE_FLAGS) $(NOEXCEPTION_FLAGS) $(WARN_CXXFLAGS) @DEFS@
+ALL_CXXFLAGS = $(NOPIE_CFLAGS) $(T_CFLAGS) $(CFLAGS-$@) $(CXXFLAGS) \
+ $(INTERNAL_CFLAGS) $(COVERAGE_FLAGS) $(NOEXCEPTION_FLAGS) \
+ $(WARN_CXXFLAGS) @DEFS@
# Likewise. Put INCLUDES at the beginning: this way, if some autoconf macro
# puts -I options in CPPFLAGS, our include files in the srcdir will always
@@ -1805,6 +1814,7 @@ libgcc.mvars: config.status Makefile spe
echo GCC_CFLAGS = '$(GCC_CFLAGS)' >> tmp-libgcc.mvars
echo INHIBIT_LIBC_CFLAGS = '$(INHIBIT_LIBC_CFLAGS)' >> tmp-libgcc.mvars
echo TARGET_SYSTEM_ROOT = '$(TARGET_SYSTEM_ROOT)' >> tmp-libgcc.mvars
+ echo enable_default_pie = '$(enable_default_pie)' >> tmp-libgcc.mvars
mv tmp-libgcc.mvars libgcc.mvars
@@ -3460,6 +3470,9 @@ site.exp: ./config.status Makefile
@if test "@enable_lto@" = "yes" ; then \
echo "set ENABLE_LTO 1" >> ./site.tmp; \
fi
+ @if test "@enable_default_pie@" = "yes" ; then \
+ echo "set ENABLE_DEFAULT_PIE 1" >> ./site.tmp; \
+ fi
# If newlib has been configured, we need to pass -B to gcc so it can find
# newlib's crt0.o if it exists. This will cause a "path prefix not used"
# message if it doesn't, but the testsuite is supposed to ignore the message -
--- a/libgcc/Makefile.in 2011-11-22 04:01:02.000000000 +0100
+++ b/libgcc/Makefile.in 2012-06-29 00:15:04.534016511 +0200
@@ -275,11 +275,17 @@ override CFLAGS := $(filter-out -fprofil
INTERNAL_CFLAGS = $(CFLAGS) $(LIBGCC2_CFLAGS) $(HOST_LIBGCC2_CFLAGS) \
$(INCLUDES) @set_have_cc_tls@ @set_use_emutls@
+#Don't use -fPIE when compiling crtbegin/end.
+ifeq ($(enable_default_pie),yes)
+NOPIE_CFLAGS = -fno-PIE
+else
+NOPIE_CFLAGS=
+endif
# Options to use when compiling crtbegin/end.
CRTSTUFF_CFLAGS = -O2 $(GCC_CFLAGS) $(INCLUDES) $(MULTILIB_CFLAGS) -g0 \
-finhibit-size-directive -fno-inline -fno-exceptions \
-fno-zero-initialized-in-bss -fno-toplevel-reorder -fno-tree-vectorize \
- -fno-stack-protector \
+ -fno-stack-protector $(NOPIE_CFLAGS) \
$(INHIBIT_LIBC_CFLAGS)
# Extra flags to use when compiling crt{begin,end}.o.
|
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