xref: /freebsd/lib/libc/Makefile (revision aa1a8ff2d6dbc51ef058f46f3db5a8bb77967145)
1
2PACKAGE=	clibs
3SHLIBDIR?= /lib
4
5.include <src.opts.mk>
6
7LIBC_SRCTOP?= ${.CURDIR}
8LIBSYS_SRCTOP?=	${.CURDIR:H}/libsys
9
10# Pick the current architecture directory for libc. In general, this is named
11# MACHINE_CPUARCH, but some ABIs are different enough to require their own libc,
12# so allow a directory named MACHINE_ARCH to override this (though treat
13# powerpc64le and powerpc64 the same).
14# Note: This is copied to msun/Makefile
15M=${MACHINE_ARCH:S/powerpc64le/powerpc64/}
16.if exists(${LIBC_SRCTOP}/${M})
17LIBC_ARCH=${M}
18.else
19LIBC_ARCH=${MACHINE_CPUARCH}
20.endif
21
22# All library objects contain FreeBSD revision strings by default; they may be
23# excluded as a space-saving measure.  To produce a library that does
24# not contain these strings, add -DSTRIP_FBSDID (see <sys/cdefs.h>) to CFLAGS
25# below.  Note: there are no IDs for syscall stubs whose sources are generated.
26# To include legacy CSRG SCCS ID strings, remove -DNO__SCCSID from CFLAGS.
27# To include RCS ID strings from other BSD projects, remove -DNO__RCSID from CFLAGS.
28CFLAGS+=-DNO__SCCSID -DNO__RCSID
29
30LIB=c
31SHLIB_MAJOR= 7
32.if ${MK_SSP} != "no" && \
33    (${LIBC_ARCH} == "i386" || ${LIBC_ARCH:Mpowerpc*} != "")
34SHLIB_LDSCRIPT=libc.ldscript
35.else
36SHLIB_LDSCRIPT=libc_nossp.ldscript
37.endif
38SHLIB_LDSCRIPT_LINKS=libxnet.so
39WARNS?=	2
40CFLAGS+=-I${LIBC_SRCTOP}/include -I${SRCTOP}/include
41CFLAGS+=-I${LIBC_SRCTOP}/${LIBC_ARCH}
42CFLAGS+=-I${LIBSYS_SRCTOP}/${LIBC_ARCH}
43.if ${MK_NLS} != "no"
44CFLAGS+=-DNLS
45.endif
46CLEANFILES+=tags
47INSTALL_PIC_ARCHIVE=
48BUILD_NOSSP_PIC_ARCHIVE=
49PRECIOUSLIB=
50
51.ifndef NO_THREAD_STACK_UNWIND
52CANCELPOINTS_CFLAGS=-fexceptions
53CFLAGS+=${CANCELPOINTS_CFLAGS}
54.endif
55
56# Use a more efficient TLS model for libc since we can reasonably assume that
57# it will be loaded during program startup.
58CFLAGS+= -ftls-model=initial-exec
59
60#
61# Link with static libcompiler_rt.a.
62#
63LDFLAGS+= -nodefaultlibs
64LIBADD+=	compiler_rt
65LIBADD+=	sys
66.if defined(COMPAT_libcompat)
67# XXX: work around gcc -m32 + bfd ld path issue for DT_NEEDED symbols.
68# https://sourceware.org/bugzilla/show_bug.cgi?id=31395
69LDFLAGS+=	-Wl,--rpath=/usr/lib${COMPAT_libcompat}
70.endif
71
72LDFLAGS+=-Wl,--auxiliary,libsys.so.7
73
74.if ${MK_SSP} != "no" && \
75    (${LIBC_ARCH} == "i386" || ${LIBC_ARCH:Mpowerpc*} != "")
76LIBADD+=	ssp_nonshared
77.endif
78
79# Extras that live in either libc.a or libc_nonshared.a
80LIBC_NONSHARED_SRCS=
81
82RTLD_ELF_DIR=${SRCTOP}/libexec/rtld-elf
83.if exists(${RTLD_ELF_DIR}/${MACHINE_ARCH:S/powerpc64le/powerpc64/})
84RTLD_ARCH=	${MACHINE_ARCH:S/powerpc64le/powerpc64/}
85.else
86RTLD_ARCH=	${MACHINE_CPUARCH}
87.endif
88RTLD_HDRS= -I${RTLD_ELF_DIR}/${RTLD_ARCH} -I${RTLD_ELF_DIR}
89
90# Define (empty) variables so that make doesn't give substitution
91# errors if the included makefiles don't change these:
92MDSRCS=
93MISRCS=
94MDASM=
95MIASM=
96NOASM=
97
98.include "${LIBC_SRCTOP}/${LIBC_ARCH}/Makefile.inc"
99.include "${LIBC_SRCTOP}/csu/Makefile.inc"
100.include "${LIBC_SRCTOP}/db/Makefile.inc"
101.include "${LIBC_SRCTOP}/compat-43/Makefile.inc"
102.include "${LIBC_SRCTOP}/gdtoa/Makefile.inc"
103.include "${LIBC_SRCTOP}/gen/Makefile.inc"
104.include "${LIBC_SRCTOP}/gmon/Makefile.inc"
105.if ${MK_ICONV} != "no"
106.include "${LIBC_SRCTOP}/iconv/Makefile.inc"
107.endif
108.include "${LIBC_SRCTOP}/inet/Makefile.inc"
109.include "${LIBC_SRCTOP}/isc/Makefile.inc"
110.include "${LIBC_SRCTOP}/locale/Makefile.inc"
111.include "${LIBC_SRCTOP}/md/Makefile.inc"
112.include "${LIBC_SRCTOP}/nameser/Makefile.inc"
113.include "${LIBC_SRCTOP}/net/Makefile.inc"
114.include "${LIBC_SRCTOP}/nls/Makefile.inc"
115.include "${LIBC_SRCTOP}/posix1e/Makefile.inc"
116.if ${MACHINE_ABI:Mlong32}
117.include "${LIBC_SRCTOP}/quad/Makefile.inc"
118.endif
119.include "${LIBC_SRCTOP}/regex/Makefile.inc"
120.include "${LIBC_SRCTOP}/resolv/Makefile.inc"
121.include "${LIBC_SRCTOP}/stdio/Makefile.inc"
122.include "${LIBC_SRCTOP}/stdlib/Makefile.inc"
123.include "${LIBC_SRCTOP}/stdtime/Makefile.inc"
124.include "${LIBC_SRCTOP}/string/Makefile.inc"
125.include "${LIBC_SRCTOP}/sys/Makefile.inc"
126.include "${LIBC_SRCTOP}/secure/Makefile.inc"
127.include "${LIBC_SRCTOP}/rpc/Makefile.inc"
128.include "${LIBC_SRCTOP}/uuid/Makefile.inc"
129.include "${LIBC_SRCTOP}/xdr/Makefile.inc"
130.if (${LIBC_ARCH} == "arm" && (defined(CPUTYPE) && ${CPUTYPE:M*soft*}))
131.include "${LIBC_SRCTOP}/softfloat/Makefile.inc"
132.endif
133.if ${LIBC_ARCH} == "i386" || ${LIBC_ARCH} == "amd64"
134.include "${LIBC_SRCTOP}/x86/gen/Makefile.inc"
135.endif
136.if ${MK_NIS} != "no"
137CFLAGS+= -DYP
138.include "${LIBC_SRCTOP}/yp/Makefile.inc"
139.endif
140.include "${LIBC_SRCTOP}/capability/Makefile.inc"
141.if ${MK_HESIOD} != "no"
142CFLAGS+= -DHESIOD
143.endif
144.if ${MK_FP_LIBC} == "no"
145CFLAGS+= -DNO_FLOATING_POINT
146.endif
147.if ${MK_NS_CACHING} != "no"
148CFLAGS+= -DNS_CACHING
149.endif
150.if defined(_FREEFALL_CONFIG)
151CFLAGS+=-D_FREEFALL_CONFIG
152.endif
153
154STATICOBJS+=${LIBC_NONSHARED_SRCS:S/.c$/.o/}
155
156VERSION_DEF=${LIBC_SRCTOP}/Versions.def
157SYMBOL_MAPS=${SYM_MAPS}
158
159# If there are no machine dependent sources, append all the
160# machine-independent sources:
161.if empty(MDSRCS) || ${MK_MACHDEP_OPTIMIZATIONS} == no
162SRCS+=	${MISRCS}
163.else
164# Append machine-dependent sources, then append machine-independent sources
165# for which there is no machine-dependent variant.
166SRCS+=	${MDSRCS}
167.for _src in ${MISRCS}
168.if ${MDSRCS:R:M${_src:R}} == ""
169SRCS+=	${_src}
170.endif
171.endfor
172.endif
173
174KQSRCS=	adddi3.c anddi3.c ashldi3.c ashrdi3.c cmpdi2.c divdi3.c iordi3.c \
175	lshldi3.c lshrdi3.c moddi3.c muldi3.c negdi2.c notdi2.c qdivrem.c \
176	subdi3.c ucmpdi2.c udivdi3.c umoddi3.c xordi3.c
177KSRCS=	bcmp.c ffs.c ffsl.c fls.c flsl.c mcount.c strcat.c strchr.c \
178	strcmp.c strcpy.c strlen.c strncpy.c strrchr.c
179
180libkern: libkern.gen libkern.${LIBC_ARCH}
181
182libkern.gen: ${KQSRCS} ${KSRCS}
183	${CP} ${LIBC_SRCTOP}/quad/quad.h ${.ALLSRC} ${DESTDIR}/sys/libkern
184
185libkern.${LIBC_ARCH}:: ${KMSRCS}
186.if defined(KMSRCS) && !empty(KMSRCS)
187	${CP} ${.ALLSRC} ${DESTDIR}/sys/libkern/${LIBC_ARCH}
188.endif
189
190HAS_TESTS=
191SUBDIR.${MK_TESTS}+= tests
192
193.include <bsd.lib.mk>
194
195.if (${LIBC_ARCH} == amd64 || ${LIBC_ARCH} == i386) && \
196    ${.TARGETS:Mall} == all && \
197    defined(LINKER_FEATURES) && ${LINKER_FEATURES:Mifunc} == ""
198.error ${LIBC_ARCH} libc requires linker ifunc support
199.endif
200
201.if !defined(_SKIP_BUILD)
202# We need libutil.h, get it directly to avoid
203# recording a build dependency
204CFLAGS+= -I${SRCTOP}/lib/libutil
205# Same issue with libm
206MSUN_ARCH_SUBDIR != ${MAKE} -B -C ${SRCTOP}/lib/msun -V ARCH_SUBDIR
207# unfortunately msun/src contains both private and public headers
208CFLAGS+= -I${SRCTOP}/lib/msun/${MSUN_ARCH_SUBDIR}
209.if ${MACHINE_CPUARCH} == "i386" || ${MACHINE_CPUARCH} == "amd64"
210CFLAGS+= -I${SRCTOP}/lib/msun/x86
211.endif
212CFLAGS+= -I${SRCTOP}/lib/msun/src
213# and we do not want to record a dependency on msun
214.if ${.MAKE.LEVEL} > 0
215GENDIRDEPS_FILTER+= N${RELDIR:H}/msun
216.endif
217.endif
218
219# Disable warnings in contributed sources.
220CWARNFLAGS:=	${.IMPSRC:Ngdtoa_*.c:C/^.+$/${CWARNFLAGS}/:C/^$/-w/}
221# Disable stack protection for SSP symbols.
222SSP_CFLAGS:=	${.IMPSRC:N*/stack_protector.c:C/^.+$/${SSP_CFLAGS}/}
223# Generate stack unwinding tables for cancellation points
224CANCELPOINTS_CFLAGS:=	${.IMPSRC:Mcancelpoints_*:C/^.+$/${CANCELPOINTS_CFLAGS}/:C/^$//}
225