xref: /openbsd/lib/csu/Makefile (revision e5da831f) 
1#	$OpenBSD: Makefile,v 1.26 2017/01/21 00:46:32 guenther Exp $
2
3OBJS=		crt0.o gcrt0.o
4OBJS+=		crtbegin.o crtend.o
5OBJS+=		crtbeginS.o crtendS.o
6OBJS+=		rcrt0.o
7SRCS=		crt0.c crtbegin.c crtbeginS.c crtend.c crtendS.c
8
9CFLAGS+=	-I${.CURDIR}/${MACHINE_CPU}
10CFLAGS+=	-I${.CURDIR}/../../libexec/ld.so
11CFLAGS+=	-I${.CURDIR}/../../libexec/ld.so/${MACHINE_CPU}
12
13# XXX "use -fno-omit-frame-pointer; the reason is almost crazy; pr#287"
14.if ${MACHINE_ARCH} == "amd64" || ${MACHINE_ARCH} == "i386"
15CFLAGS+=	-fno-omit-frame-pointer
16.endif
17
18# Override powerpc default of -fPIE
19# XXX if this is safe, why not override CFLAGS for alpha and sparc64 too?
20# Does it work because the csu bits come first and get the first few GOT
21# entries?
22.if ${MACHINE_ARCH} == "powerpc"
23CFLAGS+=	-fpie
24.endif
25
26.ifdef NOPIC
27PICFLAG=
28.elif ${MACHINE_ARCH} == "powerpc" || ${MACHINE_ARCH} == "sparc64"
29# The objects for shared libraries need to work for all possible
30# libraries, so force big PIC where it matters.
31# Arguably m88k should do this too, but maybe there aren't any
32# libraries big enough to need it there?
33PICFLAG=	-fPIC
34.endif
35
36RCFLAGS=-DRCRT0
37# amd64 can access the stack protector before relocation has occurred.
38# Other archs aren't so lucky
39.if ${MACHINE_ARCH} != "amd64"
40RCFLAGS+=-fno-stack-protector
41.endif
42
43all: ${OBJS}
44
45crt0.o: crt0.c
46	@echo ${COMPILE.c} ${.CURDIR}/crt0.c -o ${.TARGET}
47	@${COMPILE.c} ${.CURDIR}/crt0.c -o ${.TARGET}.o
48	@${LD} -x -r -o ${.TARGET} ${.TARGET}.o
49	@rm -f ${.TARGET}.o
50
51gcrt0.o: crt0.c
52	@echo ${COMPILE.c} -DMCRT0 ${.CURDIR}/crt0.c -o ${.TARGET}
53	@${COMPILE.c} -DMCRT0 ${.CURDIR}/crt0.c -o ${.TARGET}.o
54	@${LD} -x -r -o ${.TARGET} ${.TARGET}.o
55	@rm -f ${.TARGET}.o
56
57rcrt0.o: crt0.c
58	@echo ${COMPILE.c} ${RCFLAGS} ${.CURDIR}/crt0.c -o ${.TARGET}
59	@${COMPILE.c} ${RCFLAGS} ${.CURDIR}/crt0.c -o ${.TARGET}.o
60	@${LD} -x -r -o ${.TARGET} ${.TARGET}.o
61	@rm -f ${.TARGET}.o
62
63crtbegin.o: crtbegin.c
64	@echo ${COMPILE.c} ${.CURDIR}/crtbegin.c -o ${.TARGET}
65	@${COMPILE.c} ${.CURDIR}/crtbegin.c -o ${.TARGET}.o
66	@${LD} -x -r -o ${.TARGET} ${.TARGET}.o
67	@rm -f ${.TARGET}.o
68
69crtbeginS.o: crtbeginS.c
70	@echo ${COMPILE.c} ${PICFLAG} ${.CURDIR}/crtbeginS.c -o ${.TARGET}
71	@${COMPILE.c} ${PICFLAG} ${.CURDIR}/crtbeginS.c -o ${.TARGET}.o
72	@${LD} -x -r -o ${.TARGET} ${.TARGET}.o
73	@rm -f ${.TARGET}.o
74
75crtend.o: crtend.c
76	@echo ${COMPILE.c} ${.CURDIR}/crtend.c -o ${.TARGET}
77	@${COMPILE.c} ${.CURDIR}/crtend.c -o ${.TARGET}.o
78	@${LD} -x -r -o ${.TARGET} ${.TARGET}.o
79	@rm -f ${.TARGET}.o
80
81crtendS.o: crtendS.c
82	@echo ${COMPILE.c} ${PICFLAG} ${.CURDIR}/crtendS.c -o ${.TARGET}
83	@${COMPILE.c} ${PICFLAG} ${.CURDIR}/crtendS.c -o ${.TARGET}.o
84	@${LD} -x -r -o ${.TARGET} ${.TARGET}.o
85	@rm -f ${.TARGET}.o
86
87realinstall:
88	${INSTALL} ${INSTALL_COPY} -S -o ${BINOWN} -g ${BINGRP} -m 444 ${OBJS} \
89	    ${DESTDIR}/usr/lib
90
91afterdepend: .depend
92	@sed -i 's/^\([^\.]*\).o[ ]*:/\1.o g\1.o r\1.o:/' .depend
93
94.include <bsd.prog.mk>
95