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

3 files changed, 22 insertions, 13 deletions

diff --git a/gcc/config/rs6000/linux64.h b/gcc/config/rs6000/linux64.h
index bd3a6a8..5a31366 100644
--- a/gcc/config/rs6000/linux64.h
+++ b/gcc/config/rs6000/linux64.h
@@ -215,14 +215,19 @@
 #endif
 
 #undef  STARTFILE_LINUX_SPEC
+#ifdef HAVE_LD_PIE
 #define STARTFILE_LINUX_SPEC "\
-%{!shared: %{pg:gcrt1.o%s} %{!pg:%{p:gcrt1.o%s} %{!p:crt1.o%s}}} crti.o%s \
-%{static:crtbeginT.o%s} \
-%{!static:%{!shared:crtbegin.o%s} %{shared:crtbeginS.o%s}}"
+%{!shared: %{pg|p: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}"
+#else
+#define STARTFILE_LINUX_SPEC "\
+%{!shared: %{pg|p:gcrt1.o%s;:crt1.o%s}} crti.o%s \
+%{static:crtbeginT.o%s;shared|pie:crtbeginS.o%s;:crtbegin.o%s}"
+#endif
 
 #undef  ENDFILE_LINUX_SPEC
 #define ENDFILE_LINUX_SPEC "\
-%{!shared:crtend.o%s} %{shared:crtendS.o%s} crtn.o%s"
+%{shared|pie:crtendS.o%s;:crtend.o%s} crtn.o%s"
 
 #undef  TOC_SECTION_ASM_OP
 #define TOC_SECTION_ASM_OP "\t.section\t\".toc\",\"aw\""
diff --git a/gcc/config/rs6000/sysv4.h b/gcc/config/rs6000/sysv4.h
index d266c28..d91dd3d 100644
--- a/gcc/config/rs6000/sysv4.h
+++ b/gcc/config/rs6000/sysv4.h
@@ -810,7 +810,7 @@ extern int fixuplabelno;
 #define	ASM_SPEC "%(asm_cpu) \
 %{.s: %{mregnames} %{mno-regnames}} %{.S: %{mregnames} %{mno-regnames}} \
 %{v:-V} %{Qy:} %{!Qn:-Qy} %{n} %{T} %{Ym,*} %{Yd,*} %{Wa,*:%*} \
-%{mrelocatable} %{mrelocatable-lib} %{fpic:-K PIC} %{fPIC:-K PIC} \
+%{mrelocatable} %{mrelocatable-lib} %{fpic|fpie|fPIC|fPIE:-K PIC} \
 %{memb|msdata|msdata=eabi: -memb} \
 %{mlittle|mlittle-endian:-mlittle; \
   mbig|mbig-endian      :-mbig;    \
@@ -947,8 +947,8 @@ extern int fixuplabelno;
 
 #define CPP_SYSV_SPEC \
 "%{mrelocatable*: -D_RELOCATABLE} \
-%{fpic: -D__PIC__=1 -D__pic__=1} \
-%{!fpic: %{fPIC: -D__PIC__=2 -D__pic__=2}}"
+%{fpic|fpie: -D__PIC__=1 -D__pic__=1} \
+%{!fpic: %{fPIC|fPIE: -D__PIC__=2 -D__pic__=2}}"
 
 /* Override rs6000.h definition.  */
 #undef	CPP_SPEC
@@ -1107,12 +1107,16 @@ extern int fixuplabelno;
 %{!shared: %{pg:gcrt1.o%s} %{!pg:%{p:gcrt1.o%s} %{!p:crt1.o%s}}} \
 %{mnewlib: ecrti.o%s} %{!mnewlib: crti.o%s} \
 %{!shared:crtbegin.o%s} %{shared:crtbeginS.o%s}"
+#elif defined HAVE_LD_PIE
+#define	STARTFILE_LINUX_SPEC "\
+%{!shared: %{pg|p:gcrt1.o%s;pie:Scrt1.o%s;:crt1.o%s}} \
+%{mnewlib:ecrti.o%s;:crti.o%s} \
+%{static:crtbeginT.o%s;shared|pie:crtbeginS.o%s;:crtbegin.o%s}"
 #else
 #define	STARTFILE_LINUX_SPEC "\
-%{!shared: %{pg:gcrt1.o%s} %{!pg:%{p:gcrt1.o%s} %{!p:crt1.o%s}}} \
-%{mnewlib: ecrti.o%s} %{!mnewlib: crti.o%s} \
-%{static:crtbeginT.o%s} \
-%{!static:%{!shared:crtbegin.o%s} %{shared:crtbeginS.o%s}}"
+%{!shared: %{pg|p:gcrt1.o%s;:crt1.o%s}} \
+%{mnewlib:ecrti.o%s;:crti.o%s} \
+%{static:crtbeginT.o%s;shared|pie:crtbeginS.o%s;:crtbegin.o%s}"
 #endif
 
 #define	ENDFILE_LINUX_SPEC "%{!shared:crtend.o%s} %{shared:crtendS.o%s} \
diff --git a/gcc/config/rs6000/vxworks.h b/gcc/config/rs6000/vxworks.h
index 6a5c7e9..e7a7092 100644
--- a/gcc/config/rs6000/vxworks.h
+++ b/gcc/config/rs6000/vxworks.h
@@ -48,8 +48,8 @@
    t860: -DCPU=PPC860 -D_SOFT_FLOAT ; \
        : -DCPU=PPC604}  \
  %{!msoft-float:-D__hardfp}	   \
- %{fpic: -D__PIC__=1 -D__pic__=1 ; \
-   fPIC: -D__PIC__=2 -D__pic__=2 } \
+ %{fpic|fpie: -D__PIC__=1 -D__pic__=1 ; \
+   fPIC|fPIE: -D__PIC__=2 -D__pic__=2 } \
  %(cpp_cpu)"
 
 #define CC1_SPEC \