[This is mostly a re-titling of an earlier freebsd-pcc/freebsd-toolchain message to correctly identify the problem. I also added the freebsd-ports list and some content.]
On 2015-Dec-15, at 4:36 AM, Konstantin Belousov <[email protected]> wrote: > On Mon, Dec 14, 2015 at 11:06:51PM -0800, Mark Millard wrote: > > # more main.c > int main() > { > return 0; > } > > . . . >> By contrast powerpc64-gcc binds the a.out produced to /libexec/ld-elf32.so.1 >> instead: >> >> # ls -l `which gcc` >> lrwxr-xr-x 1 root wheel 48 Dec 5 05:38 /usr/bin/gcc -> >> /usr/local/bin/powerpc64-portbld-freebsd11.0-gcc >> >> # gcc --version >> gcc (FreeBSD Ports Collection for powerpc64) 5.2.0 >> Copyright (C) 2015 Free Software Foundation, Inc. >> This is free software; see the source for copying conditions. There is NO >> warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. >> >> # gcc -m32 -mcpu=powerpc main.c >> # file a.out >> a.out: ELF 32-bit MSB executable, PowerPC or cisco 4500, version 1 >> (FreeBSD), dynamically linked, interpreter /libexec/ld-elf32.so.1, >> FreeBSD-style, for FreeBSD 11.0 (1100091), not stripped > > This is a bug in gcc, most likely in the spec file. All FreeBSD > ABIs use either /libexec/ld-elf.so.1 or (for older versions) > /usr/libexec/ld-elf.so.1. If 32 bit code on powerpc64 is supposed to use /libexec/ld-elf.so.1 just like the 64 bit code is supposed to then. . . Looks like lang/gcc49 has the same -m32 -mcpu=powerpc ld-elf32.so.1 problem as powerpc64-gcc: # grep ld-elf /usr/obj/portswork/usr/ports/lang/gcc49/work/gcc-4.9-20151202/gcc/config/rs6000/freebsd64.h #define FREEBSD_DYNAMIC_LINKER32 "/libexec/ld-elf32.so.1" #define FREEBSD_DYNAMIC_LINKER64 "/libexec/ld-elf.so.1" # grep ld-elf /usr/obj/portswork/usr/ports/lang/gcc49/work/stage/usr/local/lib/gcc49/gcc/powerpc64-portbld-freebsd11.0/4.9.4/plugin/include/config/rs6000/freebsd64.h #define FREEBSD_DYNAMIC_LINKER32 "/libexec/ld-elf32.so.1" #define FREEBSD_DYNAMIC_LINKER64 "/libexec/ld-elf.so.1" Since powerpc64-gcc is a variant build of gcc5 and also has the above sort of freebsd64.h content, lang/gcc5 likely has the problem too. (By contrast the powerpc64 system clang (3.7) binds its -m32 -mcpu-powerpc a.out output file to /libexec/ld-elf.so.1 .) Just for reference, my new patch-gcc-freebsd-powerpc64 variant looks like the following (tabs likely not preserved): # svnlite diff /usr/ports/devel/powerpc64-gcc Index: /usr/ports/devel/powerpc64-gcc/files/patch-gcc-freebsd-powerpc64 =================================================================== --- /usr/ports/devel/powerpc64-gcc/files/patch-gcc-freebsd-powerpc64 (revision 403711) +++ /usr/ports/devel/powerpc64-gcc/files/patch-gcc-freebsd-powerpc64 (working copy) @@ -1,5 +1,5 @@ ---- gcc/config/rs6000/freebsd64.h 2015-11-28 09:06:13.019999000 -0800 -+++ gcc/config/rs6000/freebsd64.h 2015-11-28 09:16:10.459373000 -0800 +--- freebsd64.h.orig 2015-01-05 04:33:28.000000000 -0800 ++++ freebsd64.h 2015-12-15 09:52:34.634200000 -0800 @@ -65,6 +65,13 @@ #define INVALID_64BIT "-m%s not supported in this configuration" #define INVALID_32BIT INVALID_64BIT @@ -27,3 +27,21 @@ if (rs6000_isa_flags & OPTION_MASK_EABI) \ { \ rs6000_isa_flags &= ~OPTION_MASK_EABI; \ +@@ -154,7 +167,7 @@ + { "link_os_freebsd_spec32", LINK_OS_FREEBSD_SPEC32 }, \ + { "link_os_freebsd_spec64", LINK_OS_FREEBSD_SPEC64 }, + +-#define FREEBSD_DYNAMIC_LINKER32 "/libexec/ld-elf32.so.1" ++#define FREEBSD_DYNAMIC_LINKER32 "/libexec/ld-elf.so.1" + #define FREEBSD_DYNAMIC_LINKER64 "/libexec/ld-elf.so.1" + + #define LINK_OS_FREEBSD_SPEC_DEF32 "\ +@@ -304,7 +317,7 @@ + + /* rs6000.h gets this wrong for FreeBSD. We use the GCC defaults instead. */ + #undef WCHAR_TYPE +-#define WCHAR_TYPE (TARGET_64BIT ? "int" : "long int") ++#define WCHAR_TYPE "int" + #undef WCHAR_TYPE_SIZE + #define WCHAR_TYPE_SIZE 32 + The same sort of changes should apply to gcc49 and gcc5. The WCHAR_TYPE change fixes the powerpc (non-64) base type used for notations like L". . ." to match FreeBSD's powerpc/powerpc64 context. Otherwise lib32 in buildworld gets compile errors from the type mismatches --and lots of extra warnings as well. === Mark Millard markmi at dsl-only.net On 2015-Dec-15, at 4:36 AM, Konstantin Belousov <[email protected]> wrote: On Mon, Dec 14, 2015 at 11:06:51PM -0800, Mark Millard wrote: > # more main.c > int main() > { > return 0; > } > > > > # ls -l `which cc` > -r-xr-xr-x 7 root wheel 54137976 Dec 14 00:06 /usr/bin/cc > > # cc --version > FreeBSD clang version 3.7.0 (tags/RELEASE_370/final 246257) 20150906 > Target: powerpc64-unknown-freebsd11.0 > Thread model: posix > > # cc -m32 -mcpu=powerpc main.c > # file a.out > a.out: ELF 32-bit MSB executable, PowerPC or cisco 4500, version 1 (FreeBSD), > dynamically linked, interpreter /libexec/ld-elf.so.1, FreeBSD-style, for > FreeBSD 11.0 (1100091), not stripped > > > > By contrast powerpc64-gcc binds the a.out produced to /libexec/ld-elf32.so.1 > instead: > > # ls -l `which gcc` > lrwxr-xr-x 1 root wheel 48 Dec 5 05:38 /usr/bin/gcc -> > /usr/local/bin/powerpc64-portbld-freebsd11.0-gcc > > # gcc --version > gcc (FreeBSD Ports Collection for powerpc64) 5.2.0 > Copyright (C) 2015 Free Software Foundation, Inc. > This is free software; see the source for copying conditions. There is NO > warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. > > # gcc -m32 -mcpu=powerpc main.c > # file a.out > a.out: ELF 32-bit MSB executable, PowerPC or cisco 4500, version 1 (FreeBSD), > dynamically linked, interpreter /libexec/ld-elf32.so.1, FreeBSD-style, for > FreeBSD 11.0 (1100091), not stripped > This is a bug in gcc, most likely in the spec file. All FreeBSD ABIs use either /libexec/ld-elf.so.1 or (for older versions) /usr/libexec/ld-elf.so.1. > > Context details: > > # freebsd-version -ku; uname -aKU > 11.0-CURRENT > 11.0-CURRENT > FreeBSD FBSDG5C0 11.0-CURRENT FreeBSD 11.0-CURRENT #1 r291891M: Wed Dec 9 > 09:15:33 PST 2015 > root@FBSDG5C0:/usr/obj/xtoolchain/powerpc.powerpc64/usr/src/sys/GENERIC64vtsc-NODEBUG > powerpc 1100091 1100091 > > # pkg info powerpc64-gcc > powerpc64-gcc-5.2.0_1 > Name : powerpc64-gcc > Version : 5.2.0_1 > Installed on : Wed Dec 9 02:18:14 2015 PST > Origin : devel/powerpc64-gcc > Architecture : freebsd:11:powerpc:64 > Prefix : /usr/local > Categories : devel > . . . > > === > Mark Millard > markmi at dsl-only.net > > _______________________________________________ > [email protected] mailing list > https://lists.freebsd.org/mailman/listinfo/freebsd-toolchain > To unsubscribe, send any mail to "[email protected]" _______________________________________________ [email protected] mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-toolchain To unsubscribe, send any mail to "[email protected]"
