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 7.include <src.opts.mk> 8PACKAGE= clibs 9MK_PIE= no # Always position independent using local rules 10MK_SSP= no 11 12CONFS= libmap.conf 13PROG?= ld-elf.so.1 14.if (${PROG:M*ld-elf32*} != "") 15TAGS+= lib32 16.endif 17SRCS= \ 18 rtld_start.S \ 19 reloc.c \ 20 rtld.c \ 21 rtld_lock.c \ 22 rtld_malloc.c \ 23 rtld_printf.c \ 24 map_object.c \ 25 xmalloc.c \ 26 debug.c \ 27 libmap.c 28MAN= rtld.1 29CSTD?= gnu99 30CFLAGS+= -Wall -DFREEBSD_ELF -DIN_RTLD -ffreestanding 31CFLAGS+= -I${SRCTOP}/lib/csu/common 32.if exists(${.CURDIR}/${MACHINE_ARCH}) 33RTLD_ARCH= ${MACHINE_ARCH} 34.else 35RTLD_ARCH= ${MACHINE_CPUARCH} 36.endif 37CFLAGS+= -I${.CURDIR}/${RTLD_ARCH} -I${.CURDIR} 38.if ${MACHINE_ARCH} == "powerpc64" 39LDFLAGS+= -nostdlib -e _rtld_start 40.else 41LDFLAGS+= -nostdlib -e .rtld_start 42.endif 43 44NO_WCAST_ALIGN= yes 45WARNS?= 6 46INSTALLFLAGS= -C -b 47PRECIOUSPROG= 48BINDIR= /libexec 49SYMLINKS= ../..${BINDIR}/${PROG} ${LIBEXECDIR}/${PROG} 50MLINKS= rtld.1 ld-elf.so.1.1 \ 51 rtld.1 ld.so.1 52 53.if ${MACHINE_CPUARCH} == "sparc64" 54CFLAGS+= -fPIC 55.else 56CFLAGS+= -fpic 57.endif 58CFLAGS+= -DPIC $(DEBUG) 59.if ${MACHINE_CPUARCH} == "amd64" || ${MACHINE_CPUARCH} == "i386" 60CFLAGS+= -fvisibility=hidden 61.endif 62.if ${MACHINE_CPUARCH} == "mips" 63CFLAGS.reloc.c+=-fno-jump-tables 64.endif 65LDFLAGS+= -shared -Wl,-Bsymbolic -Wl,-z,defs 66LIBADD= c_nossp_pic 67.if ${MK_TOOLCHAIN} == "no" 68LDFLAGS+= -L${LIBCDIR} 69.endif 70 71.if ${MACHINE_CPUARCH} == "arm" 72# Some of the required math functions (div & mod) are implemented in 73# libcompiler_rt on ARM. The library also needs to be placed first to be 74# correctly linked. As some of the functions are used before we have 75# shared libraries. 76LIBADD+= compiler_rt 77.endif 78 79 80 81.if ${MK_SYMVER} == "yes" 82VERSION_DEF= ${LIBCSRCDIR}/Versions.def 83SYMBOL_MAPS= ${.CURDIR}/Symbol.map 84VERSION_MAP= Version.map 85LDFLAGS+= -Wl,--version-script=${VERSION_MAP} 86 87.if exists(${.CURDIR}/${RTLD_ARCH}/Symbol.map) 88SYMBOL_MAPS+= ${.CURDIR}/${RTLD_ARCH}/Symbol.map 89.endif 90.endif 91 92.sinclude "${.CURDIR}/${RTLD_ARCH}/Makefile.inc" 93 94# Since moving rtld-elf to /libexec, we need to create a symlink. 95# Fixup the existing binary that's there so we can symlink over it. 96beforeinstall: 97.if exists(${DESTDIR}/usr/libexec/${PROG}) && ${MK_STAGING} == "no" 98 -chflags -h noschg ${DESTDIR}/usr/libexec/${PROG} 99.endif 100 101.PATH: ${.CURDIR}/${RTLD_ARCH} 102 103HAS_TESTS= 104SUBDIR.${MK_TESTS}+= tests 105 106.include <bsd.prog.mk> 107${PROG_FULL}: ${VERSION_MAP} 108.include <bsd.symver.mk> 109 110.if ${COMPILER_TYPE} == "gcc" 111# GCC warns about redeclarations even though they have __exported 112# and are therefore not identical to the ones from the system headers. 113CFLAGS+= -Wno-redundant-decls 114.if ${COMPILER_VERSION} < 40300 115# Silence -Wshadow false positives in ancient GCC 116CFLAGS+= -Wno-shadow 117.endif 118.endif 119