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_BIND_NOW= no 10MK_PIE= no # Always position independent using local rules 11MK_SSP= no 12 13CONFS= libmap.conf 14PROG?= ld-elf.so.1 15.if (${PROG:M*ld-elf32*} != "") 16TAGS+= lib32 17.endif 18SRCS= \ 19 rtld_start.S \ 20 reloc.c \ 21 rtld.c \ 22 rtld_lock.c \ 23 rtld_malloc.c \ 24 rtld_printf.c \ 25 map_object.c \ 26 xmalloc.c \ 27 debug.c \ 28 libmap.c 29MAN= rtld.1 30CSTD?= gnu99 31CFLAGS+= -Wall -DFREEBSD_ELF -DIN_RTLD -ffreestanding 32CFLAGS+= -I${SRCTOP}/lib/csu/common 33.if exists(${.CURDIR}/${MACHINE_ARCH}) 34RTLD_ARCH= ${MACHINE_ARCH} 35.else 36RTLD_ARCH= ${MACHINE_CPUARCH} 37.endif 38CFLAGS+= -I${.CURDIR}/${RTLD_ARCH} -I${.CURDIR} 39.if ${MACHINE_ARCH} == "powerpc64" 40LDFLAGS+= -nostdlib -e _rtld_start 41.else 42LDFLAGS+= -nostdlib -e .rtld_start 43.endif 44 45NO_WCAST_ALIGN= yes 46WARNS?= 6 47INSTALLFLAGS= -C -b 48PRECIOUSPROG= 49BINDIR= /libexec 50SYMLINKS= ../..${BINDIR}/${PROG} ${LIBEXECDIR}/${PROG} 51MLINKS= rtld.1 ld-elf.so.1.1 \ 52 rtld.1 ld.so.1 53 54.if ${MACHINE_CPUARCH} == "sparc64" 55CFLAGS+= -fPIC 56.else 57CFLAGS+= -fpic 58.endif 59CFLAGS+= -DPIC $(DEBUG) 60.if ${MACHINE_CPUARCH} == "amd64" || ${MACHINE_CPUARCH} == "i386" 61CFLAGS+= -fvisibility=hidden 62.endif 63.if ${MACHINE_CPUARCH} == "mips" 64CFLAGS.reloc.c+=-fno-jump-tables 65.endif 66LDFLAGS+= -shared -Wl,-Bsymbolic -Wl,-z,defs 67LIBADD= c_nossp_pic 68.if ${MK_TOOLCHAIN} == "no" 69LDFLAGS+= -L${LIBCDIR} 70.endif 71 72.if ${MACHINE_CPUARCH} == "arm" 73# Some of the required math functions (div & mod) are implemented in 74# libcompiler_rt on ARM. The library also needs to be placed first to be 75# correctly linked. As some of the functions are used before we have 76# shared libraries. 77LIBADD+= compiler_rt 78.endif 79 80 81 82.if ${MK_SYMVER} == "yes" 83VERSION_DEF= ${LIBCSRCDIR}/Versions.def 84SYMBOL_MAPS= ${.CURDIR}/Symbol.map 85VERSION_MAP= Version.map 86LDFLAGS+= -Wl,--version-script=${VERSION_MAP} 87 88.if exists(${.CURDIR}/${RTLD_ARCH}/Symbol.map) 89SYMBOL_MAPS+= ${.CURDIR}/${RTLD_ARCH}/Symbol.map 90.endif 91.endif 92 93.sinclude "${.CURDIR}/${RTLD_ARCH}/Makefile.inc" 94 95# Since moving rtld-elf to /libexec, we need to create a symlink. 96# Fixup the existing binary that's there so we can symlink over it. 97beforeinstall: 98.if exists(${DESTDIR}/usr/libexec/${PROG}) && ${MK_STAGING} == "no" 99 -chflags -h noschg ${DESTDIR}/usr/libexec/${PROG} 100.endif 101 102.PATH: ${.CURDIR}/${RTLD_ARCH} 103 104HAS_TESTS= 105SUBDIR.${MK_TESTS}+= tests 106 107.include <bsd.prog.mk> 108${PROG_FULL}: ${VERSION_MAP} 109.include <bsd.symver.mk> 110 111.if ${COMPILER_TYPE} == "gcc" 112# GCC warns about redeclarations even though they have __exported 113# and are therefore not identical to the ones from the system headers. 114CFLAGS+= -Wno-redundant-decls 115.if ${COMPILER_VERSION} < 40300 116# Silence -Wshadow false positives in ancient GCC 117CFLAGS+= -Wno-shadow 118.endif 119.endif 120