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:= ${.PARSEDIR} 8 9.include <src.opts.mk> 10PACKAGE= clibs 11MK_PIE= no # Always position independent using local rules 12# Not compatible with sanitizer instrumentation or SSP. 13MK_ASAN= no 14MK_SSP= no 15MK_UBSAN= no 16 17.if !defined(NEED_COMPAT) 18CONFS= libmap.conf 19.endif 20PROG?= ld-elf.so.1 21.if (${PROG:M*ld-elf32*} != "") 22TAGS+= lib32 23.endif 24SRCS= \ 25 crtbrand.S \ 26 rtld_start.S \ 27 reloc.c \ 28 rtld.c \ 29 rtld_lock.c \ 30 rtld_malloc.c \ 31 rtld_printf.c \ 32 map_object.c \ 33 xmalloc.c \ 34 debug.c \ 35 libmap.c 36MAN?= rtld.1 37ACFLAGS+= -DLOCORE 38CFLAGS+= -Wall -DFREEBSD_ELF -DIN_RTLD -ffreestanding 39CFLAGS+= -I${SRCTOP}/lib/csu/common 40.if exists(${RTLD_ELF_DIR}/${MACHINE_ARCH:S/powerpc64le/powerpc64/}) 41RTLD_ARCH= ${MACHINE_ARCH:S/powerpc64le/powerpc64/} 42.else 43RTLD_ARCH= ${MACHINE_CPUARCH} 44.endif 45CFLAGS+= -I${RTLD_ELF_DIR}/${RTLD_ARCH} -I${RTLD_ELF_DIR} 46 47NO_WCAST_ALIGN= yes 48INSTALLFLAGS= -C -b 49PRECIOUSPROG= 50BINDIR= /libexec 51SYMLINKS= ../..${BINDIR}/${PROG} ${LIBEXECDIR}/${PROG} 52MLINKS?= rtld.1 ld-elf.so.1.1 \ 53 rtld.1 ld.so.1 54 55CFLAGS+= -fpic -DPIC $(DEBUG) 56 57LDFLAGS+= -shared -Wl,-Bsymbolic -Wl,-z,defs -nostdlib -e ${RTLD_ENTRY} 58# Pull in the dependencies that we use from libc 59.include "rtld-libc/Makefile.inc" 60.if ${MK_TOOLCHAIN} == "no" 61LDFLAGS+= -L${LIBCDIR} 62.endif 63 64VERSION_DEF= ${LIBCSRCDIR}/Versions.def 65SYMBOL_MAPS= ${RTLD_ELF_DIR}/Symbol.map 66VERSION_MAP= Version.map 67LDFLAGS+= -Wl,--version-script=${VERSION_MAP} 68 69.if exists(${RTLD_ELF_DIR}/${RTLD_ARCH}/Symbol.map) 70SYMBOL_MAPS+= ${RTLD_ELF_DIR}/${RTLD_ARCH}/Symbol.map 71.endif 72 73.sinclude "${RTLD_ELF_DIR}/${RTLD_ARCH}/Makefile.inc" 74RTLD_ENTRY?= .rtld_start 75 76# Since moving rtld-elf to /libexec, we need to create a symlink. 77# Fixup the existing binary that's there so we can symlink over it. 78beforeinstall: 79.if exists(${DESTDIR}/usr/libexec/${PROG}) && ${MK_STAGING} == "no" 80 -chflags -h noschg ${DESTDIR}/usr/libexec/${PROG} 81.endif 82 83.PATH: ${RTLD_ELF_DIR}/${RTLD_ARCH} ${SRCTOP}/lib/csu/common 84 85.if ${.CURDIR} == ${RTLD_ELF_DIR} 86HAS_TESTS= 87SUBDIR.${MK_TESTS}+= tests 88.endif 89 90# Some of the required math functions (div & mod) are implemented in 91# libcompiler_rt on some architectures. 92LIBADD+= compiler_rt 93 94.include <bsd.prog.mk> 95${PROG_FULL}: ${VERSION_MAP} 96.include <bsd.symver.mk> 97 98.if ${COMPILER_TYPE} == "gcc" 99# GCC warns about redeclarations even though they have __exported 100# and are therefore not identical to the ones from the system headers. 101CFLAGS+= -Wno-redundant-decls 102.endif 103