09b47fc1c2
r345620 by kib@ fixed the rtld issue that caused a crash at startup during resolution of libc's ifuncs with BIND_NOW. PR: 233333 Sponsored by: The FreeBSD Foundation
119 lines
2.8 KiB
Makefile
119 lines
2.8 KiB
Makefile
# $FreeBSD$
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# Use the following command to build local debug version of dynamic
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# linker:
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# make DEBUG_FLAGS=-g DEBUG=-DDEBUG WITHOUT_TESTS=yes all
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.include <src.opts.mk>
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PACKAGE= clibs
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MK_PIE= no # Always position independent using local rules
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MK_SSP= no
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CONFS= libmap.conf
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PROG?= ld-elf.so.1
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.if (${PROG:M*ld-elf32*} != "")
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TAGS+= lib32
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.endif
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SRCS= \
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rtld_start.S \
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reloc.c \
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rtld.c \
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rtld_lock.c \
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rtld_malloc.c \
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rtld_printf.c \
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map_object.c \
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xmalloc.c \
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debug.c \
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libmap.c
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MAN= rtld.1
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CSTD?= gnu99
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CFLAGS+= -Wall -DFREEBSD_ELF -DIN_RTLD -ffreestanding
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CFLAGS+= -I${SRCTOP}/lib/csu/common
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.if exists(${.CURDIR}/${MACHINE_ARCH})
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RTLD_ARCH= ${MACHINE_ARCH}
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.else
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RTLD_ARCH= ${MACHINE_CPUARCH}
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.endif
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CFLAGS+= -I${.CURDIR}/${RTLD_ARCH} -I${.CURDIR}
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.if ${MACHINE_ARCH} == "powerpc64"
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LDFLAGS+= -nostdlib -e _rtld_start
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.else
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LDFLAGS+= -nostdlib -e .rtld_start
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.endif
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NO_WCAST_ALIGN= yes
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WARNS?= 6
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INSTALLFLAGS= -C -b
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PRECIOUSPROG=
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BINDIR= /libexec
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SYMLINKS= ../..${BINDIR}/${PROG} ${LIBEXECDIR}/${PROG}
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MLINKS= rtld.1 ld-elf.so.1.1 \
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rtld.1 ld.so.1
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.if ${MACHINE_CPUARCH} == "sparc64"
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CFLAGS+= -fPIC
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.else
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CFLAGS+= -fpic
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.endif
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CFLAGS+= -DPIC $(DEBUG)
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.if ${MACHINE_CPUARCH} == "amd64" || ${MACHINE_CPUARCH} == "i386"
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CFLAGS+= -fvisibility=hidden
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.endif
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.if ${MACHINE_CPUARCH} == "mips"
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CFLAGS.reloc.c+=-fno-jump-tables
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.endif
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LDFLAGS+= -shared -Wl,-Bsymbolic -Wl,-z,defs
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LIBADD= c_nossp_pic
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.if ${MK_TOOLCHAIN} == "no"
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LDFLAGS+= -L${LIBCDIR}
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.endif
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.if ${MACHINE_CPUARCH} == "arm"
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# Some of the required math functions (div & mod) are implemented in
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# libcompiler_rt on ARM. The library also needs to be placed first to be
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# correctly linked. As some of the functions are used before we have
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# shared libraries.
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LIBADD+= compiler_rt
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.endif
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.if ${MK_SYMVER} == "yes"
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VERSION_DEF= ${LIBCSRCDIR}/Versions.def
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SYMBOL_MAPS= ${.CURDIR}/Symbol.map
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VERSION_MAP= Version.map
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LDFLAGS+= -Wl,--version-script=${VERSION_MAP}
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.if exists(${.CURDIR}/${RTLD_ARCH}/Symbol.map)
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SYMBOL_MAPS+= ${.CURDIR}/${RTLD_ARCH}/Symbol.map
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.endif
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.endif
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.sinclude "${.CURDIR}/${RTLD_ARCH}/Makefile.inc"
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# Since moving rtld-elf to /libexec, we need to create a symlink.
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# Fixup the existing binary that's there so we can symlink over it.
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beforeinstall:
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.if exists(${DESTDIR}/usr/libexec/${PROG}) && ${MK_STAGING} == "no"
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-chflags -h noschg ${DESTDIR}/usr/libexec/${PROG}
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.endif
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.PATH: ${.CURDIR}/${RTLD_ARCH}
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HAS_TESTS=
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SUBDIR.${MK_TESTS}+= tests
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.include <bsd.prog.mk>
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${PROG_FULL}: ${VERSION_MAP}
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.include <bsd.symver.mk>
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.if ${COMPILER_TYPE} == "gcc"
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# GCC warns about redeclarations even though they have __exported
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# and are therefore not identical to the ones from the system headers.
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CFLAGS+= -Wno-redundant-decls
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.if ${COMPILER_VERSION} < 40300
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# Silence -Wshadow false positives in ancient GCC
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CFLAGS+= -Wno-shadow
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.endif
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.endif
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