configure.in (HAVE_LD_PIE): Check for ld -pie.

	* configure.in (HAVE_LD_PIE): Check for ld -pie.
	* config.in: Rebuilt.
	* configure: Rebuilt.
	* toplev.c (flag_pie, flag_shlib): New variables.
	(f_options): Add -fpie and -fPIE.
	(parse_options_and_default_flags): Set flag_pic if -fpie/-fPIE.
	Set flag_shlib if flag_pic and not -fpie/-fPIE.
	* flags.h (flag_pic, flag_shlib): Add.
	* varasm.c (default_binds_local_p): Use flag_shlib instead of
	flag_pic.
	* gcc.c (LINK_PIE_SPEC): Define.
	(LINK_COMMAND_SPEC): Use LINK_PIE_SPEC.
	(option_map): Add --pie -> -pie mapping.
	* config/sol2.h (ASM_SPEC): Handle -fpie the same way as -fpic
	and -fPIE the same way as -fPIC.
	* config/openbsd.h (ASM_SPEC): Likewise.
	* config/frv/frv.h (ASM_SPEC): Likewise.
	* config/arm/linux-gas.h (SUBTARGET_CPP_SPEC): Likewise.
	* config/arm/semi.h (ASM_SPEC): Likewise.
	* config/arm/netbsd-elf.h (SUBTARGET_EXTRA_ASM_SPEC): Likewise.
	* config/freebsd-spec.h (FBSD_CPP_SPEC): Likewise.
	* config/i386/beos-elf.h (CC1_SPEC): Likewise.
	* config/i386/freebsd-aout.h (ASM_SPEC): Likewise.
	* config/m68k/linux.h (CPP_SPEC): Likewise.
	* config/m68k/netbsd.h (ASM_SPEC): Likewise.
	* config/m68k/openbsd.h (ASM_SPEC): Likewise.
	* config/m68k/netbsd-elf.h (ASM_SPEC): Likewise.
	* config/mips/linux.h (SUBTARGET_CPP_SPEC): Likewise.
	* config/mips/openbsd.h (SUBTARGET_ASM_SPEC): Likewise.
	* config/pa/pa-linux.h (CPP_SPEC): Likewise.
	* config/netbsd-aout.h (ASM_SPEC): Likewise.
	* config/rs6000/sysv4.h (ASM_SPEC, CPP_SYSV_SPEC): Likewise.
	* config/rs6000/vxworks.h (CPP_SPEC): Likewise.
	* config/sparc/linux.h (CPP_SUBTARGET_SPEC, ASM_SPEC): Likewise.
	* config/sparc/linux64.h (CPP_SUBTARGET_SPEC, ASM_SPEC): Likewise.
	* config/sparc/sparc.h (ASM_SPEC): Likewise.
	* config/sparc/sp64-elf.h (ASM_SPEC): Likewise.
	* config/sparc/sysv4.h (ASM_SPEC): Likewise.
	* config/sparc/netbsd-elf.h (ASM_SPEC): Likewise.
	* config/sparc/openbsd64.h (ASM_SPEC): Likewise.
	* config/cris/linux.h (CRIS_ASM_SUBTARGET_SPEC): Likewise.
	* config/linux.h (STARTFILE_SPEC, ENDFILE_SPEC): Handle -pie.
	Simplify.
	* config/alpha/elf.h (STARTFILE_SPEC, ENDFILE_SPEC): Likewise.
	* config/i386/linux64.h (STARTFILE_SPEC, ENDFILE_SPEC): Likewise.
	* config/ia64/linux.h (STARTFILE_SPEC, ENDFILE_SPEC): Likewise.
	* config/rs6000/sysv4.h (STARTFILE_SPEC, ENDFILE_SPEC): Likewise.
	* config/rs6000/linux64.h (STARTFILE_SPEC, ENDFILE_SPEC): Likewise.
	* config/sparc/linux.h (STARTFILE_SPEC, ENDFILE_SPEC): Likewise.
	* config/sparc/linux64.h (STARTFILE_SPEC, ENDFILE_SPEC): Likewise.
	* doc/invoke.texi: Document -pie, -fpie and -fPIE options.

From-SVN: r67359

1 files changed, 19 insertions, 0 deletions

diff --git a/gcc/toplev.c b/gcc/toplev.c
index 6a6e076..660b4e1 100644
--- a/gcc/toplev.c
+++ b/gcc/toplev.c
@@ -759,6 +759,17 @@ int flag_delayed_branch;
 
 int flag_pic;
 
+/* Nonzero if we are compiling position independent code for executable.
+   The value is 1 if we are doing "small" pic; value is 2 if we're doing
+   "large" pic.  */
+
+int flag_pie;
+
+/* Nonzero if we are compiling code for a shared library, zero for
+   executable.  */
+
+int flag_shlib;
+
 /* Set to the default thread-local storage (tls) model to use.  */
 
 enum tls_model flag_tls_default = TLS_MODEL_GLOBAL_DYNAMIC;
@@ -1156,6 +1167,9 @@ static const lang_independent_options f_options[] =
   {"pic", &flag_pic, 1,
    N_("Generate position independent code, if possible") },
   {"PIC", &flag_pic, 2, ""},
+  {"pie", &flag_pie, 1,
+   N_("Generate position independent code for executables, if possible") },
+  {"PIE", &flag_pie, 2, ""},
   {"exceptions", &flag_exceptions, 1,
    N_("Enable exception handling") },
   {"unwind-tables", &flag_unwind_tables, 1,
@@ -5338,6 +5352,11 @@ parse_options_and_default_flags (int argc, char **argv)
 	}
     }
 
+  if (flag_pie)
+    flag_pic = flag_pie;
+  if (flag_pic && !flag_pie)
+    flag_shlib = 1;
+
   if (flag_no_inline == 2)
     flag_no_inline = 0;
   else