2b6ee34cf6
This is needed so that setting LD/XLD is not ignored when linking with $CC
instead of directly using $LD. Currently only clang accepts an absolute
path for -fuse-ld= (Clang 12+ will add a new --ld-path flag), so we now
warn when building with GCC and $LD != "ld" since that might result in the
wrong linker being used.
We have been setting XLD=/path/to/cheri/ld.lld in CheriBSD for a long time and
used a similar version of this patch to avoid linking with /usr/bin/ld.
This change is also required when building FreeBSD on an Ubuntu with Clang:
In that case we set XCC=/usr/lib/llvm-10/bin/clang and since
/usr/lib/llvm-10/bin/ does not contain a "ld" binary the build fails with
`clang: error: unable to execute command: Executable "ld" doesn't exist!`
unless we pass -fuse-ld=/usr/lib/llvm-10/bin/ld.lld.
This change passes -fuse-ld instead of copying ${XLD} to WOLRDTMP/bin/ld
since then we would have to ensure that this file does not exist while
building the bootstrap tools. The cross-linker might not be compatible with
the host linker (e.g. when building on macos: host-linker= Mach-O /usr/bin/ld,
cross-linker=LLVM ld.lld).
Reviewed By: brooks, emaste
Differential Revision: https://reviews.freebsd.org/D26055
39 lines
1.1 KiB
Makefile
39 lines
1.1 KiB
Makefile
# $FreeBSD$
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SYSDIR?=${SRCTOP}/sys
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.PATH: ${SYSDIR}/compat/cloudabi64
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.PATH: ${SYSDIR}/${MACHINE_CPUARCH}/cloudabi64
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.PATH: ${SYSDIR}/${MACHINE}/cloudabi64
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KMOD= cloudabi64
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SRCS= cloudabi64_fd.c cloudabi64_module.c cloudabi64_poll.c \
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cloudabi64_sock.c cloudabi64_syscalls.c cloudabi64_sysent.c \
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cloudabi64_sysvec.c cloudabi64_thread.c
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OBJS= cloudabi64_vdso_blob.o
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CLEANFILES=cloudabi64_vdso.o
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.if ${MACHINE_CPUARCH} == "aarch64"
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VDSO_SRCS=${SYSDIR}/contrib/cloudabi/cloudabi_vdso_aarch64.S
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OUTPUT_TARGET=elf64-littleaarch64
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BINARY_ARCHITECTURE=aarch64
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.elif ${MACHINE_CPUARCH} == "amd64"
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VDSO_SRCS=${SYSDIR}/contrib/cloudabi/cloudabi_vdso_x86_64.S
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OUTPUT_TARGET=elf64-x86-64-freebsd
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BINARY_ARCHITECTURE=i386
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.endif
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cloudabi64_vdso.o: ${VDSO_SRCS}
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${CC} ${CCLDFLAGS} -x assembler-with-cpp -shared -nostdinc -nostdlib \
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-Wl,-T${SYSDIR}/compat/cloudabi/cloudabi_vdso.lds \
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${VDSO_SRCS} -o ${.TARGET}
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cloudabi64_vdso_blob.o: cloudabi64_vdso.o
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${OBJCOPY} --input-target binary \
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--output-target ${OUTPUT_TARGET} \
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--binary-architecture ${BINARY_ARCHITECTURE} \
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cloudabi64_vdso.o ${.TARGET}
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.include <bsd.kmod.mk>
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