[LLVMbugs] [Bug 19832] New: Option --rtlib=compiler-rt on Linux fails to work when cross compiling

bugzilla-daemon at llvm.org bugzilla-daemon at llvm.org
Thu May 22 19:04:59 PDT 2014 

http://llvm.org/bugs/show_bug.cgi?id=19832

            Bug ID: 19832
           Summary: Option --rtlib=compiler-rt on Linux fails to work when
                    cross compiling
           Product: new-bugs
           Version: trunk
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: new bugs
          Assignee: unassignedbugs at nondot.org
          Reporter: eocallaghan at alterapraxis.com
                CC: llvmbugs at cs.uiuc.edu
    Classification: Unclassified

OK so this one is a bit of a pain to explain. Basically invoking the clang
driver with both -target and --rtlib=compiler-rt does not work out because
--rtlib=compiler-rt is erroneously passed on to GCC or LD depending how you pay
about. Rather Clang should consume --rtlib=compiler-rt and call i386-elf-ld
directly with the path to the right libclang_rt. The current sementics are
questionable at best.

clang -v -target i386---elf -ccc-gcc-name i386-elf-gcc -m32 --rtlib=compiler-rt
-Os -pipe -g -nostdinc -nostdlib -Wall -Wundef -Wstrict-prototypes
-Wmissing-prototypes -Wwrite-strings -Wredundant-decls -Wno-trigraphs
-Wstrict-aliasing -Wshadow -Werror -fno-common -ffreestanding -fno-builtin
-fomit-frame-pointer -no-integrated-as -Qunused-arguments -mno-mmx
-march=k8-sse3 -mtune=k8-sse3 -fno-zero-initialized-in-bss -fno-strict-aliasing
-nostdlib -nostartfiles -static -o build/cbfs/fallback/romstage_null.debug
-Lbuild -Wl,--start-group build/generated/crt0.romstage.o
build/mainboard/jetway/nf81-t56n-lf/static.romstage.o
build/arch/x86/boot/cbmem.romstage.o build/arch/x86/lib/cbfs_and_run.romstage.o
build/arch/x86/lib/memcpy.romstage.o build/arch/x86/lib/memmove.romstage.o
build/arch/x86/lib/memset.romstage.o build/arch/x86/lib/rom_media.romstage.o
build/console/console.romstage.o build/console/die.romstage.o
build/console/init.romstage.o build/console/post.romstage.o
build/console/printk.romstage.o build/console/vtxprintf.romstage.o
build/cpu/amd/agesa/s3_resume.romstage.o build/cpu/x86/car.romstage.o
build/cpu/x86/lapic/apic_timer.romstage.o
build/cpu/x86/lapic/boot_cpu.romstage.o build/device/device_romstage.romstage.o
build/device/pci_early.romstage.o build/drivers/uart/uart8250io.romstage.o
build/drivers/uart/util.romstage.o build/lib/bootmode.romstage.o
build/lib/cbfs.romstage.o build/lib/cbmem.romstage.o build/lib/clog2.romstage.o
build/lib/compute_ip_checksum.romstage.o build/lib/hexdump.romstage.o
build/lib/loaders/cbfs_ramstage_loader.romstage.o
build/lib/loaders/load_and_run_ramstage.romstage.o build/lib/lzma.romstage.o
build/lib/memchr.romstage.o build/lib/memcmp.romstage.o
build/lib/ramtest.romstage.o
build/mainboard/jetway/nf81-t56n-lf/BiosCallOuts.romstage.o
build/mainboard/jetway/nf81-t56n-lf/PlatformGnbPcie.romstage.o
build/mainboard/jetway/nf81-t56n-lf/agesawrapper.romstage.o
build/mainboard/jetway/nf81-t56n-lf/buildOpts.romstage.o
build/northbridge/amd/agesa/family14/dimmSpd.romstage.o
build/northbridge/amd/agesa/family14/fam14_callouts.romstage.o
build/southbridge/amd/cimx/cimx_util.romstage.o
build/southbridge/amd/cimx/sb800/cfg.romstage.o
build/southbridge/amd/cimx/sb800/early.romstage.o
build/southbridge/amd/cimx/sb800/reset.romstage.o
build/southbridge/amd/cimx/sb800/smbus.romstage.o
build/superio/fintek/common/early_serial.romstage.o
build/vendorcode/amd/cimx/sb800/ACPILIB.romstage.o
build/vendorcode/amd/cimx/sb800/AMDLIB.romstage.o
build/vendorcode/amd/cimx/sb800/AMDSBLIB.romstage.o
build/vendorcode/amd/cimx/sb800/AZALIA.romstage.o
build/vendorcode/amd/cimx/sb800/DISPATCHER.romstage.o
build/vendorcode/amd/cimx/sb800/EC.romstage.o
build/vendorcode/amd/cimx/sb800/ECLIB.romstage.o
build/vendorcode/amd/cimx/sb800/ECfanLIB.romstage.o
build/vendorcode/amd/cimx/sb800/ECfanc.romstage.o
build/vendorcode/amd/cimx/sb800/GEC.romstage.o
build/vendorcode/amd/cimx/sb800/Gpp.romstage.o
build/vendorcode/amd/cimx/sb800/IOLIB.romstage.o
build/vendorcode/amd/cimx/sb800/MEMLIB.romstage.o
build/vendorcode/amd/cimx/sb800/PCILIB.romstage.o
build/vendorcode/amd/cimx/sb800/PMIO2LIB.romstage.o
build/vendorcode/amd/cimx/sb800/PMIOLIB.romstage.o
build/vendorcode/amd/cimx/sb800/SATA.romstage.o
build/vendorcode/amd/cimx/sb800/SBCMN.romstage.o
build/vendorcode/amd/cimx/sb800/SBMAIN.romstage.o
build/vendorcode/amd/cimx/sb800/SBPELIB.romstage.o
build/vendorcode/amd/cimx/sb800/SBPOR.romstage.o
build/vendorcode/amd/cimx/sb800/SMM.romstage.o
build/vendorcode/amd/cimx/sb800/USB.romstage.o  build/libagesa.fam14.a
-Wl,--end-group -T build/generated/romstage_null.ld
clang version 3.5.0 (209343)
Target: i386---elf
Thread model: posix

"/home/edward/Work/MySelf/Company/coreboot/util/crossgcc/xgcc/bin/i386-elf-gcc"
-v --rtlib=compiler-rt -Os -pipe -g -nostdinc -nostdlib -fno-common
-ffreestanding -fno-builtin -fomit-frame-pointer -mno-mmx -march=k8-sse3
-mtune=k8-sse3 -fno-zero-initialized-in-bss -nostdlib -nostartfiles -static
-Lbuild -T build/generated/romstage_null.ld -m32 -o
build/cbfs/fallback/romstage_null.debug -Wl,--start-group
build/generated/crt0.romstage.o
build/mainboard/jetway/nf81-t56n-lf/static.romstage.o
build/arch/x86/boot/cbmem.romstage.o build/arch/x86/lib/cbfs_and_run.romstage.o
build/arch/x86/lib/memcpy.romstage.o build/arch/x86/lib/memmove.romstage.o
build/arch/x86/lib/memset.romstage.o build/arch/x86/lib/rom_media.romstage.o
build/console/console.romstage.o build/console/die.romstage.o
build/console/init.romstage.o build/console/post.romstage.o
build/console/printk.romstage.o build/console/vtxprintf.romstage.o
build/cpu/amd/agesa/s3_resume.romstage.o build/cpu/x86/car.romstage.o
build/cpu/x86/lapic/apic_timer.romstage.o
build/cpu/x86/lapic/boot_cpu.romstage.o build/device/device_romstage.romstage.o
build/device/pci_early.romstage.o build/drivers/uart/uart8250io.romstage.o
build/drivers/uart/util.romstage.o build/lib/bootmode.romstage.o
build/lib/cbfs.romstage.o build/lib/cbmem.romstage.o build/lib/clog2.romstage.o
build/lib/compute_ip_checksum.romstage.o build/lib/hexdump.romstage.o
build/lib/loaders/cbfs_ramstage_loader.romstage.o
build/lib/loaders/load_and_run_ramstage.romstage.o build/lib/lzma.romstage.o
build/lib/memchr.romstage.o build/lib/memcmp.romstage.o
build/lib/ramtest.romstage.o
build/mainboard/jetway/nf81-t56n-lf/BiosCallOuts.romstage.o
build/mainboard/jetway/nf81-t56n-lf/PlatformGnbPcie.romstage.o
build/mainboard/jetway/nf81-t56n-lf/agesawrapper.romstage.o
build/mainboard/jetway/nf81-t56n-lf/buildOpts.romstage.o
build/northbridge/amd/agesa/family14/dimmSpd.romstage.o
build/northbridge/amd/agesa/family14/fam14_callouts.romstage.o
build/southbridge/amd/cimx/cimx_util.romstage.o
build/southbridge/amd/cimx/sb800/cfg.romstage.o
build/southbridge/amd/cimx/sb800/early.romstage.o
build/southbridge/amd/cimx/sb800/reset.romstage.o
build/southbridge/amd/cimx/sb800/smbus.romstage.o
build/superio/fintek/common/early_serial.romstage.o
build/vendorcode/amd/cimx/sb800/ACPILIB.romstage.o
build/vendorcode/amd/cimx/sb800/AMDLIB.romstage.o
build/vendorcode/amd/cimx/sb800/AMDSBLIB.romstage.o
build/vendorcode/amd/cimx/sb800/AZALIA.romstage.o
build/vendorcode/amd/cimx/sb800/DISPATCHER.romstage.o
build/vendorcode/amd/cimx/sb800/EC.romstage.o
build/vendorcode/amd/cimx/sb800/ECLIB.romstage.o
build/vendorcode/amd/cimx/sb800/ECfanLIB.romstage.o
build/vendorcode/amd/cimx/sb800/ECfanc.romstage.o
build/vendorcode/amd/cimx/sb800/GEC.romstage.o
build/vendorcode/amd/cimx/sb800/Gpp.romstage.o
build/vendorcode/amd/cimx/sb800/IOLIB.romstage.o
build/vendorcode/amd/cimx/sb800/MEMLIB.romstage.o
build/vendorcode/amd/cimx/sb800/PCILIB.romstage.o
build/vendorcode/amd/cimx/sb800/PMIO2LIB.romstage.o
build/vendorcode/amd/cimx/sb800/PMIOLIB.romstage.o
build/vendorcode/amd/cimx/sb800/SATA.romstage.o
build/vendorcode/amd/cimx/sb800/SBCMN.romstage.o
build/vendorcode/amd/cimx/sb800/SBMAIN.romstage.o
build/vendorcode/amd/cimx/sb800/SBPELIB.romstage.o
build/vendorcode/amd/cimx/sb800/SBPOR.romstage.o
build/vendorcode/amd/cimx/sb800/SMM.romstage.o
build/vendorcode/amd/cimx/sb800/USB.romstage.o build/libagesa.fam14.a
-Wl,--end-group
i386-elf-gcc: error: unrecognized command line option '--rtlib=compiler-rt'
Using built-in specs.
COLLECT_GCC=/home/edward/Work/MySelf/Company/coreboot/util/crossgcc/xgcc/bin/i386-elf-gcc
COLLECT_LTO_WRAPPER=/home/edward/Work/MySelf/Company/coreboot/util/crossgcc/xgcc/lib/gcc/i386-elf/4.7.3/lto-wrapper
Target: i386-elf
Configured with: ../gcc-4.7.3/configure
--prefix=/home/edward/Work/MySelf/Company/coreboot/util/crossgcc/xgcc
--libexecdir=/home/edward/Work/MySelf/Company/coreboot/util/crossgcc/xgcc/lib
--target=i386-elf --disable-werror --disable-shared --disable-libssp
--disable-bootstrap --disable-nls --disable-libquadmath --without-headers
--enable-lto --enable-languages=c
--with-gmp=/home/edward/Work/MySelf/Company/coreboot/util/crossgcc/xgcc
--with-mpfr=/home/edward/Work/MySelf/Company/coreboot/util/crossgcc/xgcc
--with-mpc=/home/edward/Work/MySelf/Company/coreboot/util/crossgcc/xgcc
--with-libelf=/home/edward/Work/MySelf/Company/coreboot/util/crossgcc/xgcc
--with-pkgversion='coreboot toolchain v1.24 February 10th, 2014'
Thread model: single
gcc version 4.7.3 (coreboot toolchain v1.24 February 10th, 2014) 
clang-3.5: error: linker (via gcc) command failed with exit code 1 (use -v to
see invocation)

Cheers,
Edward.

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