| Message ID | Pine.LNX.4.64.1101140004300.6059@digraph.polyomino.org.uk |
|---|---|
| State | New |
| Headers | show |
On Fri, Jan 14, 2011 at 1:05 AM, Joseph S. Myers <joseph@codesourcery.com> wrote: > Various */linux*.h headers have %{!ibcs:...} specs, disabling parts of > the linker spec if -ibcs is passed. > > iBCS was the *Intel* Binary Compatibility Standard, making these specs > obviously irrelevant in all but one of the headers containing them. > Even on x86, the option only disabled part of the specs (that included > the Linux dynamic linker specification) rather than otherwise making > anything iBCS-compatible, and iBCS support for Linux has long been > bitrotten (see the log message for Linux kernel commit > 612a95b4e053b8a06319049191fd2dce9c970189, removing some relics of iBCS > support three years ago, "ibcs2 support has never been supported on > 2.6 kernels as far as I know"). Furthermore, the -ibcs option could > not have worked for any compilation command that compiled sources as > well as linking, because -i* options are passed to cc1 etc. and -ibcs > would then have been rejected as an option not known by cc1 since not > listed in any .opt file. Thus, this patch removes the !ibcs > conditionals, simplifying the specs in question. OK to commit? Ok. Thanks, Richard. > > 2011-01-13 Joseph Myers <joseph@codesourcery.com> > > * config/i386/linux.h (LINK_SPEC): Don't use %{!ibcs:} conditional. > * config/m32r/linux.h (LINK_SPEC): Likewise. > * config/mips/linux.h (LINK_SPEC): Likewise. > * config/mips/linux64.h (LINK_SPEC): Likewise. > * config/sparc/linux.h (LINK_SPEC): Likewise. > * config/sparc/linux64.h (LINK_ARCH32_SPEC, LINK_ARCH64_SPEC, > LINK_SPEC): Likewise. > * config/xtensa/linux.h (LINK_SPEC): Likewise. > > diff -rupN --exclude=.svn gcc-mainline-4/gcc/config/i386/linux.h gcc-mainline/gcc/config/i386/linux.h > --- gcc-mainline-4/gcc/config/i386/linux.h 2010-12-09 05:38:51.000000000 -0800 > +++ gcc-mainline/gcc/config/i386/linux.h 2011-01-12 14:05:57.000000000 -0800 > @@ -106,11 +106,10 @@ along with GCC; see the file COPYING3. > #undef LINK_SPEC > #define LINK_SPEC "-m %(link_emulation) %{shared:-shared} \ > %{!shared: \ > - %{!ibcs: \ > - %{!static: \ > - %{rdynamic:-export-dynamic} \ > - -dynamic-linker %(dynamic_linker)} \ > - %{static:-static}}}" > + %{!static: \ > + %{rdynamic:-export-dynamic} \ > + -dynamic-linker %(dynamic_linker)} \ > + %{static:-static}}" > > /* Similar to standard Linux, but adding -ffast-math support. */ > #undef ENDFILE_SPEC > diff -rupN --exclude=.svn gcc-mainline-4/gcc/config/m32r/linux.h gcc-mainline/gcc/config/m32r/linux.h > --- gcc-mainline-4/gcc/config/m32r/linux.h 2010-12-09 05:38:50.000000000 -0800 > +++ gcc-mainline/gcc/config/m32r/linux.h 2011-01-12 14:06:29.000000000 -0800 > @@ -52,19 +52,17 @@ > #if TARGET_LITTLE_ENDIAN > #define LINK_SPEC "%(link_cpu) -m m32rlelf_linux %{shared:-shared} \ > %{!shared: \ > - %{!ibcs: \ > - %{!static: \ > - %{rdynamic:-export-dynamic} \ > - -dynamic-linker " LINUX_DYNAMIC_LINKER "} \ > - %{static:-static}}}" > + %{!static: \ > + %{rdynamic:-export-dynamic} \ > + -dynamic-linker " LINUX_DYNAMIC_LINKER "} \ > + %{static:-static}}" > #else > #define LINK_SPEC "%(link_cpu) -m m32relf_linux %{shared:-shared} \ > %{!shared: \ > - %{!ibcs: \ > - %{!static: \ > - %{rdynamic:-export-dynamic} \ > - -dynamic-linker " LINUX_DYNAMIC_LINKER "} \ > - %{static:-static}}}" > + %{!static: \ > + %{rdynamic:-export-dynamic} \ > + -dynamic-linker " LINUX_DYNAMIC_LINKER "} \ > + %{static:-static}}" > #endif > > #undef LIB_SPEC > diff -rupN --exclude=.svn gcc-mainline-4/gcc/config/mips/linux.h gcc-mainline/gcc/config/mips/linux.h > --- gcc-mainline-4/gcc/config/mips/linux.h 2010-12-09 05:38:56.000000000 -0800 > +++ gcc-mainline/gcc/config/mips/linux.h 2011-01-12 14:06:50.000000000 -0800 > @@ -69,11 +69,10 @@ along with GCC; see the file COPYING3. > "%(endian_spec) \ > %{shared:-shared} \ > %{!shared: \ > - %{!ibcs: \ > - %{!static: \ > - %{rdynamic:-export-dynamic} \ > - -dynamic-linker " LINUX_DYNAMIC_LINKER "} \ > - %{static:-static}}}" > + %{!static: \ > + %{rdynamic:-export-dynamic} \ > + -dynamic-linker " LINUX_DYNAMIC_LINKER "} \ > + %{static:-static}}" > > #undef SUBTARGET_ASM_SPEC > #define SUBTARGET_ASM_SPEC \ > diff -rupN --exclude=.svn gcc-mainline-4/gcc/config/mips/linux64.h gcc-mainline/gcc/config/mips/linux64.h > --- gcc-mainline-4/gcc/config/mips/linux64.h 2010-12-09 05:38:56.000000000 -0800 > +++ gcc-mainline/gcc/config/mips/linux64.h 2011-01-12 14:07:22.000000000 -0800 > @@ -51,13 +51,12 @@ along with GCC; see the file COPYING3. > %{call_shared} %{no_archive} %{exact_version} \ > %(endian_spec) \ > %{!shared: \ > - %{!ibcs: \ > - %{!static: \ > - %{rdynamic:-export-dynamic} \ > - %{mabi=n32: -dynamic-linker " LINUX_DYNAMIC_LINKERN32 "} \ > - %{mabi=64: -dynamic-linker " LINUX_DYNAMIC_LINKER64 "} \ > - %{mabi=32: -dynamic-linker " LINUX_DYNAMIC_LINKER32 "}} \ > - %{static:-static}}} \ > + %{!static: \ > + %{rdynamic:-export-dynamic} \ > + %{mabi=n32: -dynamic-linker " LINUX_DYNAMIC_LINKERN32 "} \ > + %{mabi=64: -dynamic-linker " LINUX_DYNAMIC_LINKER64 "} \ > + %{mabi=32: -dynamic-linker " LINUX_DYNAMIC_LINKER32 "}} \ > + %{static:-static}} \ > %{mabi=n32:-melf32%{EB:b}%{EL:l}tsmipn32} \ > %{mabi=64:-melf64%{EB:b}%{EL:l}tsmip} \ > %{mabi=32:-melf32%{EB:b}%{EL:l}tsmip}" > diff -rupN --exclude=.svn gcc-mainline-4/gcc/config/sparc/linux.h gcc-mainline/gcc/config/sparc/linux.h > --- gcc-mainline-4/gcc/config/sparc/linux.h 2011-01-12 14:03:26.000000000 -0800 > +++ gcc-mainline/gcc/config/sparc/linux.h 2011-01-12 14:07:41.000000000 -0800 > @@ -81,11 +81,10 @@ along with GCC; see the file COPYING3. > #define LINK_SPEC "-m elf32_sparc -Y P,/usr/lib %{shared:-shared} \ > %{!mno-relax:%{!r:-relax}} \ > %{!shared: \ > - %{!ibcs: \ > - %{!static: \ > - %{rdynamic:-export-dynamic} \ > - -dynamic-linker " LINUX_DYNAMIC_LINKER "} \ > - %{static:-static}}}" > + %{!static: \ > + %{rdynamic:-export-dynamic} \ > + -dynamic-linker " LINUX_DYNAMIC_LINKER "} \ > + %{static:-static}}" > > /* It's safe to pass -s always, even if -g is not used. */ > #undef ASM_SPEC > diff -rupN --exclude=.svn gcc-mainline-4/gcc/config/sparc/linux64.h gcc-mainline/gcc/config/sparc/linux64.h > --- gcc-mainline-4/gcc/config/sparc/linux64.h 2011-01-12 14:03:46.000000000 -0800 > +++ gcc-mainline/gcc/config/sparc/linux64.h 2011-01-12 14:08:52.000000000 -0800 > @@ -115,20 +115,18 @@ along with GCC; see the file COPYING3. > > #define LINK_ARCH32_SPEC "-m elf32_sparc -Y P,%R/usr/lib %{shared:-shared} \ > %{!shared: \ > - %{!ibcs: \ > - %{!static: \ > - %{rdynamic:-export-dynamic} \ > - -dynamic-linker " LINUX_DYNAMIC_LINKER32 "} \ > - %{static:-static}}} \ > + %{!static: \ > + %{rdynamic:-export-dynamic} \ > + -dynamic-linker " LINUX_DYNAMIC_LINKER32 "} \ > + %{static:-static}} \ > " > > #define LINK_ARCH64_SPEC "-m elf64_sparc -Y P,%R/usr/lib64 %{shared:-shared} \ > %{!shared: \ > - %{!ibcs: \ > - %{!static: \ > - %{rdynamic:-export-dynamic} \ > - -dynamic-linker " LINUX_DYNAMIC_LINKER64 "} \ > - %{static:-static}}} \ > + %{!static: \ > + %{rdynamic:-export-dynamic} \ > + -dynamic-linker " LINUX_DYNAMIC_LINKER64 "} \ > + %{static:-static}} \ > " > > #define LINK_ARCH_SPEC "\ > @@ -205,11 +203,10 @@ along with GCC; see the file COPYING3. > #undef LINK_SPEC > #define LINK_SPEC "-m elf64_sparc -Y P,%R/usr/lib64 %{shared:-shared} \ > %{!shared: \ > - %{!ibcs: \ > - %{!static: \ > - %{rdynamic:-export-dynamic} \ > - -dynamic-linker " LINUX_DYNAMIC_LINKER64 "} \ > - %{static:-static}}} \ > + %{!static: \ > + %{rdynamic:-export-dynamic} \ > + -dynamic-linker " LINUX_DYNAMIC_LINKER64 "} \ > + %{static:-static}} \ > %{mlittle-endian:-EL} \ > %{!mno-relax:%{!r:-relax}} \ > " > diff -rupN --exclude=.svn gcc-mainline-4/gcc/config/xtensa/linux.h gcc-mainline/gcc/config/xtensa/linux.h > --- gcc-mainline-4/gcc/config/xtensa/linux.h 2010-12-15 04:59:41.000000000 -0800 > +++ gcc-mainline/gcc/config/xtensa/linux.h 2011-01-12 14:09:12.000000000 -0800 > @@ -54,11 +54,10 @@ along with GCC; see the file COPYING3. > #define LINK_SPEC \ > "%{shared:-shared} \ > %{!shared: \ > - %{!ibcs: \ > - %{!static: \ > - %{rdynamic:-export-dynamic} \ > - -dynamic-linker " LINUX_DYNAMIC_LINKER "} \ > - %{static:-static}}}" > + %{!static: \ > + %{rdynamic:-export-dynamic} \ > + -dynamic-linker " LINUX_DYNAMIC_LINKER "} \ > + %{static:-static}}" > > #undef LOCAL_LABEL_PREFIX > #define LOCAL_LABEL_PREFIX "." > > -- > Joseph S. Myers > joseph@codesourcery.com >
diff -rupN --exclude=.svn gcc-mainline-4/gcc/config/i386/linux.h gcc-mainline/gcc/config/i386/linux.h --- gcc-mainline-4/gcc/config/i386/linux.h 2010-12-09 05:38:51.000000000 -0800 +++ gcc-mainline/gcc/config/i386/linux.h 2011-01-12 14:05:57.000000000 -0800 @@ -106,11 +106,10 @@ along with GCC; see the file COPYING3. #undef LINK_SPEC #define LINK_SPEC "-m %(link_emulation) %{shared:-shared} \ %{!shared: \ - %{!ibcs: \ - %{!static: \ - %{rdynamic:-export-dynamic} \ - -dynamic-linker %(dynamic_linker)} \ - %{static:-static}}}" + %{!static: \ + %{rdynamic:-export-dynamic} \ + -dynamic-linker %(dynamic_linker)} \ + %{static:-static}}" /* Similar to standard Linux, but adding -ffast-math support. */ #undef ENDFILE_SPEC diff -rupN --exclude=.svn gcc-mainline-4/gcc/config/m32r/linux.h gcc-mainline/gcc/config/m32r/linux.h --- gcc-mainline-4/gcc/config/m32r/linux.h 2010-12-09 05:38:50.000000000 -0800 +++ gcc-mainline/gcc/config/m32r/linux.h 2011-01-12 14:06:29.000000000 -0800 @@ -52,19 +52,17 @@ #if TARGET_LITTLE_ENDIAN #define LINK_SPEC "%(link_cpu) -m m32rlelf_linux %{shared:-shared} \ %{!shared: \ - %{!ibcs: \ - %{!static: \ - %{rdynamic:-export-dynamic} \ - -dynamic-linker " LINUX_DYNAMIC_LINKER "} \ - %{static:-static}}}" + %{!static: \ + %{rdynamic:-export-dynamic} \ + -dynamic-linker " LINUX_DYNAMIC_LINKER "} \ + %{static:-static}}" #else #define LINK_SPEC "%(link_cpu) -m m32relf_linux %{shared:-shared} \ %{!shared: \ - %{!ibcs: \ - %{!static: \ - %{rdynamic:-export-dynamic} \ - -dynamic-linker " LINUX_DYNAMIC_LINKER "} \ - %{static:-static}}}" + %{!static: \ + %{rdynamic:-export-dynamic} \ + -dynamic-linker " LINUX_DYNAMIC_LINKER "} \ + %{static:-static}}" #endif #undef LIB_SPEC diff -rupN --exclude=.svn gcc-mainline-4/gcc/config/mips/linux.h gcc-mainline/gcc/config/mips/linux.h --- gcc-mainline-4/gcc/config/mips/linux.h 2010-12-09 05:38:56.000000000 -0800 +++ gcc-mainline/gcc/config/mips/linux.h 2011-01-12 14:06:50.000000000 -0800 @@ -69,11 +69,10 @@ along with GCC; see the file COPYING3. "%(endian_spec) \ %{shared:-shared} \ %{!shared: \ - %{!ibcs: \ - %{!static: \ - %{rdynamic:-export-dynamic} \ - -dynamic-linker " LINUX_DYNAMIC_LINKER "} \ - %{static:-static}}}" + %{!static: \ + %{rdynamic:-export-dynamic} \ + -dynamic-linker " LINUX_DYNAMIC_LINKER "} \ + %{static:-static}}" #undef SUBTARGET_ASM_SPEC #define SUBTARGET_ASM_SPEC \ diff -rupN --exclude=.svn gcc-mainline-4/gcc/config/mips/linux64.h gcc-mainline/gcc/config/mips/linux64.h --- gcc-mainline-4/gcc/config/mips/linux64.h 2010-12-09 05:38:56.000000000 -0800 +++ gcc-mainline/gcc/config/mips/linux64.h 2011-01-12 14:07:22.000000000 -0800 @@ -51,13 +51,12 @@ along with GCC; see the file COPYING3. %{call_shared} %{no_archive} %{exact_version} \ %(endian_spec) \ %{!shared: \ - %{!ibcs: \ - %{!static: \ - %{rdynamic:-export-dynamic} \ - %{mabi=n32: -dynamic-linker " LINUX_DYNAMIC_LINKERN32 "} \ - %{mabi=64: -dynamic-linker " LINUX_DYNAMIC_LINKER64 "} \ - %{mabi=32: -dynamic-linker " LINUX_DYNAMIC_LINKER32 "}} \ - %{static:-static}}} \ + %{!static: \ + %{rdynamic:-export-dynamic} \ + %{mabi=n32: -dynamic-linker " LINUX_DYNAMIC_LINKERN32 "} \ + %{mabi=64: -dynamic-linker " LINUX_DYNAMIC_LINKER64 "} \ + %{mabi=32: -dynamic-linker " LINUX_DYNAMIC_LINKER32 "}} \ + %{static:-static}} \ %{mabi=n32:-melf32%{EB:b}%{EL:l}tsmipn32} \ %{mabi=64:-melf64%{EB:b}%{EL:l}tsmip} \ %{mabi=32:-melf32%{EB:b}%{EL:l}tsmip}" diff -rupN --exclude=.svn gcc-mainline-4/gcc/config/sparc/linux.h gcc-mainline/gcc/config/sparc/linux.h --- gcc-mainline-4/gcc/config/sparc/linux.h 2011-01-12 14:03:26.000000000 -0800 +++ gcc-mainline/gcc/config/sparc/linux.h 2011-01-12 14:07:41.000000000 -0800 @@ -81,11 +81,10 @@ along with GCC; see the file COPYING3. #define LINK_SPEC "-m elf32_sparc -Y P,/usr/lib %{shared:-shared} \ %{!mno-relax:%{!r:-relax}} \ %{!shared: \ - %{!ibcs: \ - %{!static: \ - %{rdynamic:-export-dynamic} \ - -dynamic-linker " LINUX_DYNAMIC_LINKER "} \ - %{static:-static}}}" + %{!static: \ + %{rdynamic:-export-dynamic} \ + -dynamic-linker " LINUX_DYNAMIC_LINKER "} \ + %{static:-static}}" /* It's safe to pass -s always, even if -g is not used. */ #undef ASM_SPEC diff -rupN --exclude=.svn gcc-mainline-4/gcc/config/sparc/linux64.h gcc-mainline/gcc/config/sparc/linux64.h --- gcc-mainline-4/gcc/config/sparc/linux64.h 2011-01-12 14:03:46.000000000 -0800 +++ gcc-mainline/gcc/config/sparc/linux64.h 2011-01-12 14:08:52.000000000 -0800 @@ -115,20 +115,18 @@ along with GCC; see the file COPYING3. #define LINK_ARCH32_SPEC "-m elf32_sparc -Y P,%R/usr/lib %{shared:-shared} \ %{!shared: \ - %{!ibcs: \ - %{!static: \ - %{rdynamic:-export-dynamic} \ - -dynamic-linker " LINUX_DYNAMIC_LINKER32 "} \ - %{static:-static}}} \ + %{!static: \ + %{rdynamic:-export-dynamic} \ + -dynamic-linker " LINUX_DYNAMIC_LINKER32 "} \ + %{static:-static}} \ " #define LINK_ARCH64_SPEC "-m elf64_sparc -Y P,%R/usr/lib64 %{shared:-shared} \ %{!shared: \ - %{!ibcs: \ - %{!static: \ - %{rdynamic:-export-dynamic} \ - -dynamic-linker " LINUX_DYNAMIC_LINKER64 "} \ - %{static:-static}}} \ + %{!static: \ + %{rdynamic:-export-dynamic} \ + -dynamic-linker " LINUX_DYNAMIC_LINKER64 "} \ + %{static:-static}} \ " #define LINK_ARCH_SPEC "\ @@ -205,11 +203,10 @@ along with GCC; see the file COPYING3. #undef LINK_SPEC #define LINK_SPEC "-m elf64_sparc -Y P,%R/usr/lib64 %{shared:-shared} \ %{!shared: \ - %{!ibcs: \ - %{!static: \ - %{rdynamic:-export-dynamic} \ - -dynamic-linker " LINUX_DYNAMIC_LINKER64 "} \ - %{static:-static}}} \ + %{!static: \ + %{rdynamic:-export-dynamic} \ + -dynamic-linker " LINUX_DYNAMIC_LINKER64 "} \ + %{static:-static}} \ %{mlittle-endian:-EL} \ %{!mno-relax:%{!r:-relax}} \ " diff -rupN --exclude=.svn gcc-mainline-4/gcc/config/xtensa/linux.h gcc-mainline/gcc/config/xtensa/linux.h --- gcc-mainline-4/gcc/config/xtensa/linux.h 2010-12-15 04:59:41.000000000 -0800 +++ gcc-mainline/gcc/config/xtensa/linux.h 2011-01-12 14:09:12.000000000 -0800 @@ -54,11 +54,10 @@ along with GCC; see the file COPYING3. #define LINK_SPEC \ "%{shared:-shared} \ %{!shared: \ - %{!ibcs: \ - %{!static: \ - %{rdynamic:-export-dynamic} \ - -dynamic-linker " LINUX_DYNAMIC_LINKER "} \ - %{static:-static}}}" + %{!static: \ + %{rdynamic:-export-dynamic} \ + -dynamic-linker " LINUX_DYNAMIC_LINKER "} \ + %{static:-static}}" #undef LOCAL_LABEL_PREFIX #define LOCAL_LABEL_PREFIX "."
Various */linux*.h headers have %{!ibcs:...} specs, disabling parts of the linker spec if -ibcs is passed. iBCS was the *Intel* Binary Compatibility Standard, making these specs obviously irrelevant in all but one of the headers containing them. Even on x86, the option only disabled part of the specs (that included the Linux dynamic linker specification) rather than otherwise making anything iBCS-compatible, and iBCS support for Linux has long been bitrotten (see the log message for Linux kernel commit 612a95b4e053b8a06319049191fd2dce9c970189, removing some relics of iBCS support three years ago, "ibcs2 support has never been supported on 2.6 kernels as far as I know"). Furthermore, the -ibcs option could not have worked for any compilation command that compiled sources as well as linking, because -i* options are passed to cc1 etc. and -ibcs would then have been rejected as an option not known by cc1 since not listed in any .opt file. Thus, this patch removes the !ibcs conditionals, simplifying the specs in question. OK to commit? 2011-01-13 Joseph Myers <joseph@codesourcery.com> * config/i386/linux.h (LINK_SPEC): Don't use %{!ibcs:} conditional. * config/m32r/linux.h (LINK_SPEC): Likewise. * config/mips/linux.h (LINK_SPEC): Likewise. * config/mips/linux64.h (LINK_SPEC): Likewise. * config/sparc/linux.h (LINK_SPEC): Likewise. * config/sparc/linux64.h (LINK_ARCH32_SPEC, LINK_ARCH64_SPEC, LINK_SPEC): Likewise. * config/xtensa/linux.h (LINK_SPEC): Likewise.