1#	@(#)Makefile	8.2 (Berkeley) 2/3/94
2# $FreeBSD: stable/11/lib/libc/Makefile 313240 2017-02-04 17:17:38Z ngie $
3
4PACKAGE=	clibs
5SHLIBDIR?= /lib
6
7.include <src.opts.mk>
8
9# Force building of libc_pic.a
10MK_TOOLCHAIN=	yes
11
12LIBC_SRCTOP?= ${.CURDIR}
13
14# Pick the current architecture directory for libc. In general, this is
15# named MACHINE_CPUARCH, but some ABIs are different enough to require
16# their own libc, so allow a directory named MACHINE_ARCH to override this.
17
18.if exists(${LIBC_SRCTOP}/${MACHINE_ARCH})
19LIBC_ARCH=${MACHINE_ARCH}
20.else
21LIBC_ARCH=${MACHINE_CPUARCH}
22.endif
23
24# All library objects contain FreeBSD revision strings by default; they may be
25# excluded as a space-saving measure.  To produce a library that does
26# not contain these strings, add -DSTRIP_FBSDID (see <sys/cdefs.h>) to CFLAGS
27# below.  Note: there are no IDs for syscall stubs whose sources are generated.
28# To include legacy CSRG sccsid strings, add -DLIBC_SCCS and -DSYSLIBC_SCCS
29# to CFLAGS below.  -DSYSLIBC_SCCS affects just the system call stubs.
30LIB=c
31SHLIB_MAJOR= 7
32SHLIB_LDSCRIPT=libc.ldscript
33SHLIB_LDSCRIPT_LINKS=libxnet.so
34WARNS?=	2
35CFLAGS+=-I${LIBC_SRCTOP}/include -I${SRCTOP}/include
36CFLAGS+=-I${LIBC_SRCTOP}/${LIBC_ARCH}
37.if ${MK_NLS} != "no"
38CFLAGS+=-DNLS
39.endif
40CLEANFILES+=tags
41INSTALL_PIC_ARCHIVE=
42PRECIOUSLIB=
43
44.ifndef NO_THREAD_STACK_UNWIND
45CANCELPOINTS_CFLAGS=-fexceptions
46CFLAGS+=${CANCELPOINTS_CFLAGS}
47.endif
48
49#
50# Link with static libcompiler_rt.a.
51#
52LDFLAGS+= -nodefaultlibs
53LIBADD+=	compiler_rt
54
55.if ${MK_SSP} != "no"
56LIBADD+=	ssp_nonshared
57.endif
58
59# Extras that live in either libc.a or libc_nonshared.a
60LIBC_NONSHARED_SRCS=
61
62# Define (empty) variables so that make doesn't give substitution
63# errors if the included makefiles don't change these:
64MDSRCS=
65MISRCS=
66MDASM=
67MIASM=
68NOASM=
69
70.include "${LIBC_SRCTOP}/${LIBC_ARCH}/Makefile.inc"
71.include "${LIBC_SRCTOP}/db/Makefile.inc"
72.include "${LIBC_SRCTOP}/compat-43/Makefile.inc"
73.include "${LIBC_SRCTOP}/gdtoa/Makefile.inc"
74.include "${LIBC_SRCTOP}/gen/Makefile.inc"
75.include "${LIBC_SRCTOP}/gmon/Makefile.inc"
76.if ${MK_ICONV} != "no"
77.include "${LIBC_SRCTOP}/iconv/Makefile.inc"
78.endif
79.include "${LIBC_SRCTOP}/inet/Makefile.inc"
80.include "${LIBC_SRCTOP}/isc/Makefile.inc"
81.include "${LIBC_SRCTOP}/locale/Makefile.inc"
82.include "${LIBC_SRCTOP}/md/Makefile.inc"
83.include "${LIBC_SRCTOP}/nameser/Makefile.inc"
84.include "${LIBC_SRCTOP}/net/Makefile.inc"
85.include "${LIBC_SRCTOP}/nls/Makefile.inc"
86.include "${LIBC_SRCTOP}/posix1e/Makefile.inc"
87.if ${LIBC_ARCH} != "aarch64" && \
88    ${LIBC_ARCH} != "amd64" && \
89    ${LIBC_ARCH} != "powerpc64" && \
90    ${LIBC_ARCH} != "riscv" && \
91    ${LIBC_ARCH} != "sparc64" && \
92    ${MACHINE_ARCH:Mmipsn32*} == "" && \
93    ${MACHINE_ARCH:Mmips64*} == ""
94.include "${LIBC_SRCTOP}/quad/Makefile.inc"
95.endif
96.include "${LIBC_SRCTOP}/regex/Makefile.inc"
97.include "${LIBC_SRCTOP}/resolv/Makefile.inc"
98.include "${LIBC_SRCTOP}/stdio/Makefile.inc"
99.include "${LIBC_SRCTOP}/stdlib/Makefile.inc"
100.include "${LIBC_SRCTOP}/stdlib/jemalloc/Makefile.inc"
101.include "${LIBC_SRCTOP}/stdtime/Makefile.inc"
102.include "${LIBC_SRCTOP}/string/Makefile.inc"
103.include "${LIBC_SRCTOP}/sys/Makefile.inc"
104.include "${LIBC_SRCTOP}/secure/Makefile.inc"
105.include "${LIBC_SRCTOP}/rpc/Makefile.inc"
106.include "${LIBC_SRCTOP}/uuid/Makefile.inc"
107.include "${LIBC_SRCTOP}/xdr/Makefile.inc"
108.if (${LIBC_ARCH} == "arm" && \
109	(${MACHINE_ARCH:Marmv6*} == "" || (defined(CPUTYPE) && ${CPUTYPE:M*soft*}))) || \
110     ${LIBC_ARCH} == "mips"
111.include "${LIBC_SRCTOP}/softfloat/Makefile.inc"
112.endif
113.if ${LIBC_ARCH} == "i386" || ${LIBC_ARCH} == "amd64"
114.include "${LIBC_SRCTOP}/x86/sys/Makefile.inc"
115.endif
116.if ${MK_NIS} != "no"
117CFLAGS+= -DYP
118.include "${LIBC_SRCTOP}/yp/Makefile.inc"
119.endif
120.include "${LIBC_SRCTOP}/capability/Makefile.inc"
121.if ${MK_HESIOD} != "no"
122CFLAGS+= -DHESIOD
123.endif
124.if ${MK_FP_LIBC} == "no"
125CFLAGS+= -DNO_FLOATING_POINT
126.endif
127.if ${MK_NS_CACHING} != "no"
128CFLAGS+= -DNS_CACHING
129.endif
130.if defined(_FREEFALL_CONFIG)
131CFLAGS+=-D_FREEFALL_CONFIG
132.endif
133
134STATICOBJS+=${LIBC_NONSHARED_SRCS:S/.c$/.o/}
135
136VERSION_DEF=${LIBC_SRCTOP}/Versions.def
137SYMBOL_MAPS=${SYM_MAPS}
138CFLAGS+= -DSYMBOL_VERSIONING
139
140# If there are no machine dependent sources, append all the
141# machine-independent sources:
142.if empty(MDSRCS)
143SRCS+=	${MISRCS}
144.else
145# Append machine-dependent sources, then append machine-independent sources
146# for which there is no machine-dependent variant.
147SRCS+=	${MDSRCS}
148.for _src in ${MISRCS}
149.if ${MDSRCS:R:M${_src:R}} == ""
150SRCS+=	${_src}
151.endif
152.endfor
153.endif
154
155KQSRCS=	adddi3.c anddi3.c ashldi3.c ashrdi3.c cmpdi2.c divdi3.c iordi3.c \
156	lshldi3.c lshrdi3.c moddi3.c muldi3.c negdi2.c notdi2.c qdivrem.c \
157	subdi3.c ucmpdi2.c udivdi3.c umoddi3.c xordi3.c
158KSRCS=	bcmp.c ffs.c ffsl.c fls.c flsl.c mcount.c strcat.c strchr.c \
159	strcmp.c strcpy.c strlen.c strncpy.c strrchr.c
160
161libkern: libkern.gen libkern.${LIBC_ARCH}
162
163libkern.gen: ${KQSRCS} ${KSRCS}
164	${CP} ${LIBC_SRCTOP}/quad/quad.h ${.ALLSRC} ${DESTDIR}/sys/libkern
165
166libkern.${LIBC_ARCH}:: ${KMSRCS}
167.if defined(KMSRCS) && !empty(KMSRCS)
168	${CP} ${.ALLSRC} ${DESTDIR}/sys/libkern/${LIBC_ARCH}
169.endif
170
171.if ${MK_TESTS} != "no"
172SUBDIR+=	tests
173.endif
174
175.include <bsd.lib.mk>
176
177.if !defined(_SKIP_BUILD)
178# We need libutil.h, get it directly to avoid
179# recording a build dependency
180CFLAGS+= -I${SRCTOP}/lib/libutil
181# Same issue with libm
182MSUN_ARCH_SUBDIR != ${MAKE} -B -C ${SRCTOP}/lib/msun -V ARCH_SUBDIR
183# unfortunately msun/src contains both private and public headers
184CFLAGS+= -I${SRCTOP}/lib/msun/${MSUN_ARCH_SUBDIR}
185.if ${MACHINE_CPUARCH} == "i386" || ${MACHINE_CPUARCH} == "amd64"
186CFLAGS+= -I${SRCTOP}/lib/msun/x86
187.endif
188CFLAGS+= -I${SRCTOP}/lib/msun/src
189# and we do not want to record a dependency on msun
190.if ${.MAKE.LEVEL} > 0
191GENDIRDEPS_FILTER+= N${RELDIR:H}/msun
192.endif
193.endif
194
195# Disable warnings in contributed sources.
196CWARNFLAGS:=	${.IMPSRC:Ngdtoa_*.c:C/^.+$/${CWARNFLAGS}/:C/^$/-w/}
197# XXX For now, we don't allow libc to be compiled with
198# -fstack-protector-all because it breaks rtld.  We may want to make a librtld
199# in the future to circumvent this.
200SSP_CFLAGS:=	${SSP_CFLAGS:S/^-fstack-protector-all$/-fstack-protector/}
201# Disable stack protection for SSP symbols.
202SSP_CFLAGS:=	${.IMPSRC:N*/stack_protector.c:C/^.+$/${SSP_CFLAGS}/}
203# Generate stack unwinding tables for cancellation points
204CANCELPOINTS_CFLAGS:=	${.IMPSRC:Mcancelpoints_*:C/^.+$/${CANCELPOINTS_CFLAGS}/:C/^$//}
205