cross-compiling for arm with clang

Fri Jun 17 18:38:25 UTC 2011

On Jun 17, 2011, at 7:29 PM, Warner Losh wrote:

> Shouldn't you be modifying the CFLAGS and CXXFLAGS instead of CC and CXX?
> 
> Warner

Right, must be some "smart" reason why I used CC and CXX, but now I don't remember why.

Now, I'm back on my original problem, clang invokes /usr/bin/as which is i386 AS instead of ARM version in obj tree.

How this works on other platforms (i.e. cross-compiling for amd64)?

Thanks,

Damjan

 make CC=clang CXX=clang++ TARGET=arm TARGET_CPUTYPE=cortex-a9  -DNO_CLEAN _libraries

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>>> stage 4.2: building libraries
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cd /usr/src-svn;  MAKEOBJDIRPREFIX=/zfs/data2/src/obj/arm.arm  MACHINE_ARCH=arm  MACHINE=arm  CPUTYPE=cortex-a9 GROFF_BIN_PATH=/zfs/data2/src/obj/arm.arm/usr/src-svn/tmp/legacy/usr/bin  GROFF_FONT_PATH=/zfs/data2/src/obj/arm.arm/usr/src-svn/tmp/legacy/usr/share/groff_font  GROFF_TMAC_PATH=/zfs/data2/src/obj/arm.arm/usr/src-svn/tmp/legacy/usr/share/tmac CFLAGS="-O2 -pipe  -v -ccc-host-triple arm-unknown-freebsd"  CXXFLAGS="-O2 -pipe -ccc-host-triple arm-elf-freebsd"  _SHLIBDIRPREFIX=/zfs/data2/src/obj/arm.arm/usr/src-svn/tmp  VERSION="FreeBSD 9.0-CURRENT i386 900036"  INSTALL="sh /usr/src-svn/tools/install.sh"  PATH=/zfs/data2/src/obj/arm.arm/usr/src-svn/tmp/legacy/usr/sbin:/zfs/data2/src/obj/arm.arm/usr/src-svn/tmp/legacy/usr/bin:/zfs/data2/src/obj/arm.arm/usr/src-svn/tmp/legacy/usr/games:/zfs/data2/src/obj/arm.arm/usr/src-svn/tmp/usr/sbin:/zfs/data2/src/obj/arm.arm/usr/src-svn/tmp/usr/bin:/zfs/data2/src/obj/arm.arm/usr/src-svn/tmp/usr/games:/sbin:/bin:/usr/sbin:/usr/bin make -f Makefile.inc1 DESTDIR=/zfs/data2/src/obj/arm.arm/usr/src-svn/tmp -DNO_FSCHG -DWITHOUT_HTML -DWITHOUT_INFO -DNO_LINT  -DWITHOUT_MAN -DWITHOUT_PROFILE libraries
cd /usr/src-svn;  make -f Makefile.inc1 _prereq_libs;  make -f Makefile.inc1 _startup_libs;  make -f Makefile.inc1 _prebuild_libs;  make -f Makefile.inc1 _generic_libs;
===> gnu/lib/libssp/libssp_nonshared (obj,depend,all,install)
sh /usr/src-svn/tools/install.sh -C -o root -g wheel -m 444   libssp_nonshared.a /zfs/data2/src/obj/arm.arm/usr/src-svn/tmp/usr/lib
===> gnu/lib/libgcc (obj,depend,all,install)
sh /usr/src-svn/tools/install.sh -C -o root -g wheel -m 444   libgcc_eh.a /zfs/data2/src/obj/arm.arm/usr/src-svn/tmp/usr/lib
===> lib/libcompiler_rt (obj,depend,all,install)
sh /usr/src-svn/tools/install.sh -C -o root -g wheel -m 444   libcompiler_rt.a /zfs/data2/src/obj/arm.arm/usr/src-svn/tmp/usr/lib
/zfs/data2/src/obj/arm.arm/usr/src-svn/tmp/usr/lib/libgcc.a -> libcompiler_rt.a
===> gnu/lib/csu (obj,depend,all,install)
sh /usr/src-svn/tools/install.sh -o root -g wheel -m 444  crtbegin.o /zfs/data2/src/obj/arm.arm/usr/src-svn/tmp/usr/lib/crtbegin.o
sh /usr/src-svn/tools/install.sh -o root -g wheel -m 444  crtend.o /zfs/data2/src/obj/arm.arm/usr/src-svn/tmp/usr/lib/crtend.o
sh /usr/src-svn/tools/install.sh -o root -g wheel -m 444  crtbeginT.o /zfs/data2/src/obj/arm.arm/usr/src-svn/tmp/usr/lib/crtbeginT.o
sh /usr/src-svn/tools/install.sh -o root -g wheel -m 444  crtbegin.So /zfs/data2/src/obj/arm.arm/usr/src-svn/tmp/usr/lib/crtbeginS.o
sh /usr/src-svn/tools/install.sh -o root -g wheel -m 444  crtend.So /zfs/data2/src/obj/arm.arm/usr/src-svn/tmp/usr/lib/crtendS.o
===> lib/csu/arm (obj,depend,all,install)
clang -O2 -pipe  -v -ccc-host-triple arm-unknown-freebsd -mcpu=cortex-a9 -I/usr/src-svn/lib/csu/arm/../common  -I/usr/src-svn/lib/csu/arm/../../libc/include -std=gnu99 -Wsystem-headers -Wall -Wno-format-y2k -W -Wno-unused-parameter -Wstrict-prototypes -Wmissing-prototypes -Wpointer-arith -Wreturn-type -Wcast-qual -Wwrite-strings -Wswitch -Wshadow -Wunused-parameter -Wcast-align -Wchar-subscripts -Winline -Wnested-externs -Wredundant-decls -Wold-style-definition -Wno-pointer-sign -c -o crt1.o crt1.s
FreeBSD clang version 3.0 (trunk 130700) 20110502
Target: arm-unknown-freebsd
Thread model: posix
clang: warning: argument unused during compilation: '-O2'
clang: warning: argument unused during compilation: '-mcpu=cortex-a9'
clang: warning: argument unused during compilation: '-I /usr/src-svn/lib/csu/arm/../common'
clang: warning: argument unused during compilation: '-I /usr/src-svn/lib/csu/arm/../../libc/include'
clang: warning: argument unused during compilation: '-std=gnu99'
clang: warning: argument unused during compilation: '-Wsystem-headers'
clang: warning: argument unused during compilation: '-Wall'
clang: warning: argument unused during compilation: '-Wno-format-y2k'
clang: warning: argument unused during compilation: '-W'
clang: warning: argument unused during compilation: '-Wno-unused-parameter'
clang: warning: argument unused during compilation: '-Wstrict-prototypes'
clang: warning: argument unused during compilation: '-Wmissing-prototypes'
clang: warning: argument unused during compilation: '-Wpointer-arith'
clang: warning: argument unused during compilation: '-Wreturn-type'
clang: warning: argument unused during compilation: '-Wcast-qual'
clang: warning: argument unused during compilation: '-Wwrite-strings'
clang: warning: argument unused during compilation: '-Wswitch'
clang: warning: argument unused during compilation: '-Wshadow'
clang: warning: argument unused during compilation: '-Wunused-parameter'
clang: warning: argument unused during compilation: '-Wcast-align'
clang: warning: argument unused during compilation: '-Wchar-subscripts'
clang: warning: argument unused during compilation: '-Winline'
clang: warning: argument unused during compilation: '-Wnested-externs'
clang: warning: argument unused during compilation: '-Wredundant-decls'
clang: warning: argument unused during compilation: '-Wold-style-definition'
clang: warning: argument unused during compilation: '-Wno-pointer-sign'
 "/usr/bin/as" -o crt1.o crt1.s
crt1.s: Assembler messages:
crt1.s:11: Error: too many memory references for `mov'
crt1.s:12: Error: too many memory references for `mov'
crt1.s:13: Error: too many memory references for `mov'
crt1.s:15: Error: no such instruction: `ldr r0,[sp,'
crt1.s:16: Error: too many memory references for `add'
crt1.s:17: Error: too many memory references for `add'
crt1.s:18: Error: too many memory references for `add'
crt1.s:20: Error: no such instruction: `bic sp,sp,'
crt1.s:21: Error: too many memory references for `sub'
crt1.s:22: Error: invalid char '[' beginning operand 2 `[sp'
crt1.s:23: Error: invalid char '[' beginning operand 2 `[sp'
crt1.s:25: Error: no such instruction: `b __start'
clang: error: assembler command failed with exit code 1 (use -v to see invocation)
*** Error code 1

Stop in /usr/src-svn/lib/csu/arm.
*** Error code 1

Stop in /usr/src-svn.
*** Error code 1

Stop in /usr/src-svn.