1# $FreeBSD$ 2 3# Use the following command to build local debug version of dynamic 4# linker: 5# make DEBUG_FLAGS=-g DEBUG=-DDEBUG MK_TESTS=no all 6 7.include <src.opts.mk> 8MK_SSP= no 9 10PROG?= ld-elf.so.1 11SRCS= rtld_start.S \ 12 reloc.c rtld.c rtld_lock.c rtld_printf.c map_object.c \ 13 malloc.c xmalloc.c debug.c libmap.c 14MAN= rtld.1 15CSTD?= gnu99 16CFLAGS+= -Wall -DFREEBSD_ELF -DIN_RTLD -ffreestanding 17CFLAGS+= -I${SRCTOP}/lib/csu/common 18.if exists(${.CURDIR}/${MACHINE_ARCH}) 19RTLD_ARCH= ${MACHINE_ARCH} 20.else 21RTLD_ARCH= ${MACHINE_CPUARCH} 22.endif 23CFLAGS+= -I${.CURDIR}/${RTLD_ARCH} -I${.CURDIR} 24.if ${MACHINE_ARCH} == "powerpc64" 25LDFLAGS+= -nostdlib -e _rtld_start 26.else 27LDFLAGS+= -nostdlib -e .rtld_start 28.endif 29WARNS?= 2 30INSTALLFLAGS= -C -b 31PRECIOUSPROG= 32BINDIR= /libexec 33SYMLINKS= ${BINDIR}/${PROG} ${LIBEXECDIR}/${PROG} 34MLINKS= rtld.1 ld-elf.so.1.1 \ 35 rtld.1 ld.so.1 36 37.if ${MACHINE_CPUARCH} == "sparc64" 38CFLAGS+= -fPIC 39.else 40CFLAGS+= -fpic 41.endif 42CFLAGS+= -DPIC $(DEBUG) 43.if ${MACHINE_CPUARCH} == "amd64" || ${MACHINE_CPUARCH} == "i386" 44CFLAGS+= -fvisibility=hidden 45.endif 46LDFLAGS+= -shared -Wl,-Bsymbolic 47LIBADD= c_pic 48.if ${MK_TOOLCHAIN} == "no" 49LDFLAGS+= -L${LIBCDIR} 50.endif 51 52.if ${MACHINE_CPUARCH} == "arm" 53# Some of the required math functions (div & mod) are implemented in 54# libcompiler_rt on ARM. The library also needs to be placed first to be 55# correctly linked. As some of the functions are used before we have 56# shared libraries. 57LIBADD+= compiler_rt 58.endif 59 60 61 62.if ${MK_SYMVER} == "yes" 63VERSION_DEF= ${LIBCSRCDIR}/Versions.def 64SYMBOL_MAPS= ${.CURDIR}/Symbol.map 65VERSION_MAP= Version.map 66LDFLAGS+= -Wl,--version-script=${VERSION_MAP} 67 68${PROG}: ${VERSION_MAP} 69 70.if exists(${.CURDIR}/${RTLD_ARCH}/Symbol.map) 71SYMBOL_MAPS+= ${.CURDIR}/${RTLD_ARCH}/Symbol.map 72.endif 73.endif 74 75.sinclude "${.CURDIR}/${RTLD_ARCH}/Makefile.inc" 76 77# Since moving rtld-elf to /libexec, we need to create a symlink. 78# Fixup the existing binary that's there so we can symlink over it. 79beforeinstall: 80.if exists(${DESTDIR}/usr/libexec/${PROG}) && ${MK_STAGING} == "no" 81 -chflags -h noschg ${DESTDIR}/usr/libexec/${PROG} 82.endif 83 84.PATH: ${.CURDIR}/${RTLD_ARCH} 85 86.if ${MK_TESTS} != "no" 87SUBDIR+= tests 88.endif 89 90.include <bsd.prog.mk> 91.include <bsd.symver.mk> 92