517191eede
"ld-elf.so.1.old". The dynamic linker is a critical component of the system, and it is difficult to recover if it is damaged and there isn't a working backup available. For instance, parts of the toolchain such as the assembler are dynamically linked, making it impossible to build a new dynamic linker if the installed one doesn't work.
57 lines
1.5 KiB
Makefile
57 lines
1.5 KiB
Makefile
# $FreeBSD$
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MAINTAINER= jdp
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PROG= ld-elf.so.1
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SRCS= rtld_start.S rtld.c lockdflt.c map_object.c malloc.c \
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xmalloc.c debug.c reloc.c
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MAN1= rtld.1
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CFLAGS+= -Wall -DFREEBSD_ELF -I${.CURDIR}/${MACHINE_ARCH} -I${.CURDIR}
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LDFLAGS+= -nostdlib -e .rtld_start
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INSTALLFLAGS+= -fschg -C
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MLINKS= rtld.1 ld-elf.so.1.1
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.if exists(${.CURDIR}/${MACHINE_ARCH}/Makefile.inc)
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.include "${.CURDIR}/${MACHINE_ARCH}/Makefile.inc"
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.endif
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# If LDSCRIPT is defined, we build the dynamic linker as an
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# executable. Otherwise we build it as a shared object. We ignore
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# LDSCRIPT if the running kernel is too old to support it.
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.if defined(LDSCRIPT)
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KERN_OSRELDATE!= /sbin/sysctl -n kern.osreldate 2>/dev/null || echo 0
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.if ${KERN_OSRELDATE} >= 400001
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LDSO_IS_EXECUTABLE= yes
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.endif
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.endif
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.ifdef LDSO_IS_EXECUTABLE
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OBJS+= dyn_hack.so
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LDFLAGS+= -Wl,-T,${LDSCRIPT} -Wl,-E -Wl,-Bstatic
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DPADD= ${LIBC}
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LDADD= -lc
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.else
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CFLAGS+= -fpic -DPIC
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LDFLAGS+= -shared -Wl,-Bsymbolic
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DPADD= ${LIBC_PIC}
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LDADD= -lc_pic
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.endif
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dyn_hack.so:
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${CC} -shared -nostdlib -o dyn_hack.so -x c /dev/null
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.PATH: ${.CURDIR}/${MACHINE_ARCH}
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.include <bsd.prog.mk>
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# Keep the previous version of the dynamic linker for recovery
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# purposes. This must come after the include of <bsd.prog.mk> so that
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# BINDIR is set for the exists(...) constructs.
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beforeinstall:
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.if exists(${DESTDIR}${BINDIR}/${PROG})
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-chflags noschg ${DESTDIR}${BINDIR}/${PROG}
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.if exists(${DESTDIR}${BINDIR}/${PROG}.old)
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-chflags noschg ${DESTDIR}${BINDIR}/${PROG}.old
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.endif
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cp -p ${DESTDIR}${BINDIR}/${PROG} ${DESTDIR}${BINDIR}/${PROG}.old
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.endif
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