1# $FreeBSD$ 2 3# Use the following command to build local debug version of dynamic 4# linker: 5# make DEBUG_FLAGS=-g DEBUG=-DDEBUG WITHOUT_TESTS=yes all 6 7.include <src.opts.mk> 8PACKAGE= clibs 9MK_SSP= no 10 11CONFS= libmap.conf 12PROG?= ld-elf.so.1 13.if (${PROG:M*ld-elf32*} != "") 14TAGS+= lib32 15.endif 16SRCS= rtld_start.S \ 17 reloc.c rtld.c rtld_lock.c rtld_printf.c map_object.c \ 18 malloc.c xmalloc.c debug.c libmap.c 19MAN= rtld.1 20CSTD?= gnu99 21CFLAGS+= -Wall -DFREEBSD_ELF -DIN_RTLD -ffreestanding 22CFLAGS+= -I${SRCTOP}/lib/csu/common 23.if exists(${.CURDIR}/${MACHINE_ARCH}) 24RTLD_ARCH= ${MACHINE_ARCH} 25.else 26RTLD_ARCH= ${MACHINE_CPUARCH} 27.endif 28CFLAGS+= -I${.CURDIR}/${RTLD_ARCH} -I${.CURDIR} 29.if ${MACHINE_ARCH} == "powerpc64" 30LDFLAGS+= -nostdlib -e _rtld_start 31.else 32LDFLAGS+= -nostdlib -e .rtld_start 33.endif 34 35NO_WCAST_ALIGN= yes 36WARNS?= 6 37INSTALLFLAGS= -C -b 38PRECIOUSPROG= 39BINDIR= /libexec 40SYMLINKS= ../..${BINDIR}/${PROG} ${LIBEXECDIR}/${PROG} 41MLINKS= rtld.1 ld-elf.so.1.1 \ 42 rtld.1 ld.so.1 43 44.if ${MACHINE_CPUARCH} == "sparc64" 45CFLAGS+= -fPIC 46.else 47CFLAGS+= -fpic 48.endif 49CFLAGS+= -DPIC $(DEBUG) 50.if ${MACHINE_CPUARCH} == "amd64" || ${MACHINE_CPUARCH} == "i386" 51CFLAGS+= -fvisibility=hidden 52.endif 53.if ${MACHINE_CPUARCH} == "mips" 54CFLAGS.reloc.c+=-fno-jump-tables 55.endif 56LDFLAGS+= -shared -Wl,-Bsymbolic -Wl,-z,defs 57LIBADD= c_nossp_pic 58.if ${MK_TOOLCHAIN} == "no" 59LDFLAGS+= -L${LIBCDIR} 60.endif 61 62.if ${MACHINE_CPUARCH} == "arm" 63# Some of the required math functions (div & mod) are implemented in 64# libcompiler_rt on ARM. The library also needs to be placed first to be 65# correctly linked. As some of the functions are used before we have 66# shared libraries. 67LIBADD+= compiler_rt 68.endif 69 70 71 72.if ${MK_SYMVER} == "yes" 73VERSION_DEF= ${LIBCSRCDIR}/Versions.def 74SYMBOL_MAPS= ${.CURDIR}/Symbol.map 75VERSION_MAP= Version.map 76LDFLAGS+= -Wl,--version-script=${VERSION_MAP} 77 78.if exists(${.CURDIR}/${RTLD_ARCH}/Symbol.map) 79SYMBOL_MAPS+= ${.CURDIR}/${RTLD_ARCH}/Symbol.map 80.endif 81.endif 82 83.sinclude "${.CURDIR}/${RTLD_ARCH}/Makefile.inc" 84 85# Since moving rtld-elf to /libexec, we need to create a symlink. 86# Fixup the existing binary that's there so we can symlink over it. 87beforeinstall: 88.if exists(${DESTDIR}/usr/libexec/${PROG}) && ${MK_STAGING} == "no" 89 -chflags -h noschg ${DESTDIR}/usr/libexec/${PROG} 90.endif 91 92.PATH: ${.CURDIR}/${RTLD_ARCH} 93 94HAS_TESTS= 95SUBDIR.${MK_TESTS}+= tests 96 97.include <bsd.prog.mk> 98${PROG_FULL}: ${VERSION_MAP} 99.include <bsd.symver.mk> 100 101.if ${COMPILER_TYPE} == "gcc" 102# GCC warns about redeclarations even though they have __exported 103# and are therefore not identical to the ones from the system headers. 104CFLAGS+= -Wno-redundant-decls 105.if ${COMPILER_VERSION} < 40300 106# Silence -Wshadow false positives in ancient GCC 107CFLAGS+= -Wno-shadow 108.endif 109.endif 110