IABSD.fr/src/lib/csu/Makefile

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• Author : kettenis
  Date : 2020-06-27 18:35:07
  Hash : 7bccb200
  Message : Prevent the use of jump tables on powerpc64 as well. ok patrick@, drahn@

• lib/csu/Makefile

• #	$OpenBSD: Makefile,v 1.35 2020/06/27 18:35:07 kettenis Exp $
  
  OBJS=		crt0.o gcrt0.o
  OBJS+=		crtbegin.o crtend.o
  OBJS+=		crtbeginS.o crtendS.o
  OBJS+=		rcrt0.o
  SRCS=		crt0.c crtbegin.c crtbeginS.c crtend.c crtendS.c
  
  CFLAGS+=	-I${.CURDIR}/${MACHINE_CPU}
  CFLAGS+=	-I${.CURDIR}/../../libexec/ld.so
  CFLAGS+=	-I${.CURDIR}/../../libexec/ld.so/${MACHINE_CPU}
  
  # XXX "use -fno-omit-frame-pointer; the reason is almost crazy; pr#287"
  .if ${MACHINE_ARCH} == "amd64" || ${MACHINE_ARCH} == "i386"
  CFLAGS+=	-fno-omit-frame-pointer
  .endif
  
  .ifdef NOPIC
  PICFLAG=
  .elif ${MACHINE_ARCH} == "powerpc" || ${MACHINE_ARCH} == "sparc64"
  # The objects for shared libraries need to work for all possible
  # libraries, so force big PIC where it matters.
  # Arguably m88k should do this too, but maybe there aren't any
  # libraries big enough to need it there?
  PICFLAG=	-fPIC
  .endif
  
  RCFLAGS=-DRCRT0
  # amd64 can access the stack protector before relocation has occurred.
  # Other archs aren't so lucky
  .if ${MACHINE_ARCH} != "amd64"
  RCFLAGS+=-fno-stack-protector 
  .endif
  
  # Prevent use of builtins in _dl_boot_bind().
  .if ${MACHINE_CPU} == "mips64" || ${MACHINE_CPU} == "powerpc"
  RCFLAGS+=-fno-builtin
  .endif
  
  .if ${MACHINE_CPU} == "powerpc64"
  RCFLAGS+= -mno-vsx -mno-altivec
  .endif
  
  # Prevent use of jump tables in _dl_boot_bind().
  .if ${MACHINE_CPU} == "mips64" || ${MACHINE_CPU} == "powerpc" || \
      ${MACHINE_CPU} == "powerpc64"
  RCFLAGS+=-fno-jump-tables
  .endif
  
  DEPS = ${OBJS:.o=.d}
  DFLAGS += -MF ${.TARGET:R}.d
  
  all: ${OBJS}
  
  crt0.o: crt0.c
  	@echo ${COMPILE.c} ${.CURDIR}/crt0.c -o ${.TARGET}
  	@${COMPILE.c} ${DFLAGS} ${.CURDIR}/crt0.c -o ${.TARGET}.o
  	@${LD} -x -r -o ${.TARGET} ${.TARGET}.o
  	@rm -f ${.TARGET}.o
  
  gcrt0.o: crt0.c
  	@echo ${COMPILE.c} -DMCRT0 ${.CURDIR}/crt0.c -o ${.TARGET}
  	@${COMPILE.c} ${DFLAGS} -DMCRT0 ${.CURDIR}/crt0.c -o ${.TARGET}.o
  	@${LD} -x -r -o ${.TARGET} ${.TARGET}.o
  	@rm -f ${.TARGET}.o
  
  rcrt0.o: crt0.c
  	@echo ${COMPILE.c} ${RCFLAGS} ${.CURDIR}/crt0.c -o ${.TARGET}
  	@${COMPILE.c} ${DFLAGS} ${RCFLAGS} ${.CURDIR}/crt0.c -o ${.TARGET}.o
  	@${LD} -x -r -o ${.TARGET} ${.TARGET}.o
  	@rm -f ${.TARGET}.o
  
  crtbegin.o: crtbegin.c
  	@echo ${COMPILE.c} ${.CURDIR}/crtbegin.c -o ${.TARGET}
  	@${COMPILE.c} ${DFLAGS} ${.CURDIR}/crtbegin.c -o ${.TARGET}.o
  	@${LD} -x -r -o ${.TARGET} ${.TARGET}.o
  	@rm -f ${.TARGET}.o
  
  crtbeginS.o: crtbeginS.c
  	@echo ${COMPILE.c} ${PICFLAG} ${.CURDIR}/crtbeginS.c -o ${.TARGET}
  	@${COMPILE.c} ${DFLAGS} ${PICFLAG} ${.CURDIR}/crtbeginS.c -o ${.TARGET}.o
  	@${LD} -x -r -o ${.TARGET} ${.TARGET}.o
  	@rm -f ${.TARGET}.o
  
  crtend.o: crtend.c
  	@echo ${COMPILE.c} ${.CURDIR}/crtend.c -o ${.TARGET}
  	@${COMPILE.c} ${DFLAGS} ${.CURDIR}/crtend.c -o ${.TARGET}.o
  	@${LD} -x -r -o ${.TARGET} ${.TARGET}.o
  	@rm -f ${.TARGET}.o
  
  crtendS.o: crtendS.c
  	@echo ${COMPILE.c} ${PICFLAG} ${.CURDIR}/crtendS.c -o ${.TARGET}
  	@${COMPILE.c} ${DFLAGS} ${PICFLAG} ${.CURDIR}/crtendS.c -o ${.TARGET}.o
  	@${LD} -x -r -o ${.TARGET} ${.TARGET}.o
  	@rm -f ${.TARGET}.o
  
  realinstall:
  	${INSTALL} ${INSTALL_COPY} -o ${BINOWN} -g ${BINGRP} -m 444 ${OBJS} \
  	    ${DESTDIR}/usr/lib
  
  .include <bsd.prog.mk>