1# $FreeBSD$ 2 3# Use the following command to build local debug version of dynamic 4# linker: 5# make DEBUG_FLAGS=-g WITHOUT_TESTS=yes all 6 7RTLD_ELF_DIR:= ${.PARSEDIR} 8 9.include <src.opts.mk> 10PACKAGE= clibs 11MK_PIE= no # Always position independent using local rules 12# Not compatible with sanitizer instrumentation or SSP. 13MK_ASAN= no 14MK_SSP= no 15MK_UBSAN= no 16 17CONFS= libmap.conf 18PROG?= ld-elf.so.1 19.if (${PROG:M*ld-elf32*} != "") 20TAGS+= lib32 21.endif 22SRCS= \ 23 crtbrand.S \ 24 rtld_start.S \ 25 reloc.c \ 26 rtld.c \ 27 rtld_lock.c \ 28 rtld_malloc.c \ 29 rtld_printf.c \ 30 map_object.c \ 31 xmalloc.c \ 32 debug.c \ 33 libmap.c 34MAN?= rtld.1 35ACFLAGS+= -DLOCORE 36CFLAGS+= -Wall -DFREEBSD_ELF -DIN_RTLD -ffreestanding 37CFLAGS+= -I${SRCTOP}/lib/csu/common 38.if exists(${RTLD_ELF_DIR}/${MACHINE_ARCH:S/powerpc64le/powerpc64/}) 39RTLD_ARCH= ${MACHINE_ARCH:S/powerpc64le/powerpc64/} 40.else 41RTLD_ARCH= ${MACHINE_CPUARCH} 42.endif 43CFLAGS+= -I${RTLD_ELF_DIR}/${RTLD_ARCH} -I${RTLD_ELF_DIR} 44 45NO_WCAST_ALIGN= yes 46INSTALLFLAGS= -C -b 47PRECIOUSPROG= 48BINDIR= /libexec 49SYMLINKS= ../..${BINDIR}/${PROG} ${LIBEXECDIR}/${PROG} 50MLINKS?= rtld.1 ld-elf.so.1.1 \ 51 rtld.1 ld.so.1 52 53CFLAGS+= -fpic -DPIC $(DEBUG) 54 55LDFLAGS+= -shared -Wl,-Bsymbolic -Wl,-z,defs -nostdlib -e ${RTLD_ENTRY} 56# Pull in the dependencies that we use from libc 57.include "rtld-libc/Makefile.inc" 58.if ${MK_TOOLCHAIN} == "no" 59LDFLAGS+= -L${LIBCDIR} 60.endif 61 62VERSION_DEF= ${LIBCSRCDIR}/Versions.def 63SYMBOL_MAPS= ${RTLD_ELF_DIR}/Symbol.map 64VERSION_MAP= Version.map 65LDFLAGS+= -Wl,--version-script=${VERSION_MAP} 66 67.if exists(${RTLD_ELF_DIR}/${RTLD_ARCH}/Symbol.map) 68SYMBOL_MAPS+= ${RTLD_ELF_DIR}/${RTLD_ARCH}/Symbol.map 69.endif 70 71.sinclude "${RTLD_ELF_DIR}/${RTLD_ARCH}/Makefile.inc" 72RTLD_ENTRY?= .rtld_start 73 74# Since moving rtld-elf to /libexec, we need to create a symlink. 75# Fixup the existing binary that's there so we can symlink over it. 76beforeinstall: 77.if exists(${DESTDIR}/usr/libexec/${PROG}) && ${MK_STAGING} == "no" 78 -chflags -h noschg ${DESTDIR}/usr/libexec/${PROG} 79.endif 80 81.PATH: ${RTLD_ELF_DIR}/${RTLD_ARCH} ${SRCTOP}/lib/csu/common 82 83.if ${.CURDIR} == ${RTLD_ELF_DIR} 84HAS_TESTS= 85SUBDIR.${MK_TESTS}+= tests 86.endif 87 88# Some of the required math functions (div & mod) are implemented in 89# libcompiler_rt on some architectures. 90LIBADD+= compiler_rt 91 92.include <bsd.prog.mk> 93${PROG_FULL}: ${VERSION_MAP} 94.include <bsd.symver.mk> 95 96.if ${COMPILER_TYPE} == "gcc" 97# GCC warns about redeclarations even though they have __exported 98# and are therefore not identical to the ones from the system headers. 99CFLAGS+= -Wno-redundant-decls 100.endif 101