xref: /openbsd/lib/csu/Makefile (revision d89ec533) 
1#	$OpenBSD: Makefile,v 1.36 2021/11/14 00:45:38 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.ifdef NOPIC
19PICFLAG=
20.elif ${MACHINE_ARCH} == "powerpc" || ${MACHINE_ARCH} == "sparc64"
21# The objects for shared libraries need to work for all possible
22# libraries, so force big PIC where it matters.
23# Arguably m88k should do this too, but maybe there aren't any
24# libraries big enough to need it there?
25PICFLAG=	-fPIC
26.endif
27
28.if exists(${.CURDIR}/${MACHINE_CPU}/boot_md.h)
29CFLAGS+=	-DBOOT_H=\"boot_md.h\"
30.else
31CFLAGS+=	-DBOOT_H=\"boot.h\"
32.endif
33
34RCFLAGS=-DRCRT0
35# amd64 can access the stack protector before relocation has occurred.
36# Other archs aren't so lucky
37.if ${MACHINE_ARCH} != "amd64"
38RCFLAGS+=-fno-stack-protector
39.endif
40
41# Prevent use of builtins in _dl_boot_bind().
42.if ${MACHINE_CPU} == "mips64" || ${MACHINE_CPU} == "powerpc"
43RCFLAGS+=-fno-builtin
44.endif
45
46.if ${MACHINE_CPU} == "powerpc64"
47RCFLAGS+= -mno-vsx -mno-altivec
48.endif
49
50# Prevent use of jump tables in _dl_boot_bind().
51.if ${MACHINE_CPU} == "mips64" || ${MACHINE_CPU} == "powerpc" || \
52    ${MACHINE_CPU} == "powerpc64"
53RCFLAGS+=-fno-jump-tables
54.endif
55
56DEPS = ${OBJS:.o=.d}
57DFLAGS += -MF ${.TARGET:R}.d
58
59all: ${OBJS}
60
61crt0.o: crt0.c
62	@echo ${COMPILE.c} ${.CURDIR}/crt0.c -o ${.TARGET}
63	@${COMPILE.c} ${DFLAGS} ${.CURDIR}/crt0.c -o ${.TARGET}.o
64	@${LD} -x -r -o ${.TARGET} ${.TARGET}.o
65	@rm -f ${.TARGET}.o
66
67gcrt0.o: crt0.c
68	@echo ${COMPILE.c} -DMCRT0 ${.CURDIR}/crt0.c -o ${.TARGET}
69	@${COMPILE.c} ${DFLAGS} -DMCRT0 ${.CURDIR}/crt0.c -o ${.TARGET}.o
70	@${LD} -x -r -o ${.TARGET} ${.TARGET}.o
71	@rm -f ${.TARGET}.o
72
73rcrt0.o: crt0.c
74	@echo ${COMPILE.c} ${RCFLAGS} ${.CURDIR}/crt0.c -o ${.TARGET}
75	@${COMPILE.c} ${DFLAGS} ${RCFLAGS} ${.CURDIR}/crt0.c -o ${.TARGET}.o
76	@${LD} -x -r -o ${.TARGET} ${.TARGET}.o
77	@rm -f ${.TARGET}.o
78
79crtbegin.o: crtbegin.c
80	@echo ${COMPILE.c} ${.CURDIR}/crtbegin.c -o ${.TARGET}
81	@${COMPILE.c} ${DFLAGS} ${.CURDIR}/crtbegin.c -o ${.TARGET}.o
82	@${LD} -x -r -o ${.TARGET} ${.TARGET}.o
83	@rm -f ${.TARGET}.o
84
85crtbeginS.o: crtbeginS.c
86	@echo ${COMPILE.c} ${PICFLAG} ${.CURDIR}/crtbeginS.c -o ${.TARGET}
87	@${COMPILE.c} ${DFLAGS} ${PICFLAG} ${.CURDIR}/crtbeginS.c -o ${.TARGET}.o
88	@${LD} -x -r -o ${.TARGET} ${.TARGET}.o
89	@rm -f ${.TARGET}.o
90
91crtend.o: crtend.c
92	@echo ${COMPILE.c} ${.CURDIR}/crtend.c -o ${.TARGET}
93	@${COMPILE.c} ${DFLAGS} ${.CURDIR}/crtend.c -o ${.TARGET}.o
94	@${LD} -x -r -o ${.TARGET} ${.TARGET}.o
95	@rm -f ${.TARGET}.o
96
97crtendS.o: crtendS.c
98	@echo ${COMPILE.c} ${PICFLAG} ${.CURDIR}/crtendS.c -o ${.TARGET}
99	@${COMPILE.c} ${DFLAGS} ${PICFLAG} ${.CURDIR}/crtendS.c -o ${.TARGET}.o
100	@${LD} -x -r -o ${.TARGET} ${.TARGET}.o
101	@rm -f ${.TARGET}.o
102
103realinstall:
104	${INSTALL} ${INSTALL_COPY} -o ${BINOWN} -g ${BINGRP} -m 444 ${OBJS} \
105	    ${DESTDIR}/usr/lib
106
107.include <bsd.prog.mk>
108