Makefile revision 303196 
1# $FreeBSD: stable/11/gnu/lib/libgcc/Makefile 303196 2016-07-22 17:34:28Z emaste $
2
3PACKAGE=	clibs
4GCCDIR=	${.CURDIR}/../../../contrib/gcc
5GCCLIB=	${.CURDIR}/../../../contrib/gcclibs
6CCDIR=	${.CURDIR}/../../usr.bin/cc
7COMPILERRTDIR=	${.CURDIR}/../../../contrib/compiler-rt
8UNWINDINCDIR=	${.CURDIR}/../../../contrib/llvm/projects/libunwind/include
9UNWINDSRCDIR=	${.CURDIR}/../../../contrib/llvm/projects/libunwind/src
10
11SHLIB_NAME=	libgcc_s.so.1
12SHLIBDIR?=	/lib
13
14.include <src.opts.mk>
15#
16# libgcc is linked in last and thus cannot depend on ssp symbols coming
17# from earlier libraries. Disable stack protection for this library.
18#
19MK_SSP=	no
20
21.include "${CCDIR}/Makefile.tgt"
22.include "${CCDIR}/cc_tools/Makefile.hdrs"
23
24.if ${TARGET_CPUARCH} == "arm"
25CFLAGS+=	-DTARGET_ARM_EABI
26.endif
27
28.PATH: ${GCCDIR}/config/${GCC_CPU} ${GCCDIR}/config ${GCCDIR}
29
30CFLAGS+=	-DIN_GCC -DIN_LIBGCC2 -D__GCC_FLOAT_NOT_NEEDED \
31		-DHAVE_GTHR_DEFAULT \
32		-I${GCCLIB}/include \
33		-I${GCCDIR}/config -I${GCCDIR} -I. \
34		-I${CCDIR}/cc_tools
35
36LDFLAGS+=	-nodefaultlibs
37LIBADD+=	c
38
39SOBJS=		# added to below in various ways depending on TARGET_CPUARCH
40
41#---------------------------------------------------------------------------
42#
43# Library members defined in libgcc2.c.
44# When upgrading GCC, obtain the following list from mklibgcc.in
45#
46LIB2FUNCS= _muldi3 _negdi2 _lshrdi3 _ashldi3 _ashrdi3 \
47	_cmpdi2 _ucmpdi2 \
48	_enable_execute_stack _trampoline __main _absvsi2 _absvdi2 _addvsi3 \
49	_addvdi3 _subvsi3 _subvdi3 _mulvsi3 _mulvdi3 _negvsi2 _negvdi2 _ctors \
50	_ffssi2 _ffsdi2 _clz _clzsi2 _clzdi2 _ctzsi2 _ctzdi2 _popcount_tab \
51	_popcountsi2 _popcountdi2 _paritysi2 _paritydi2 _powisf2 _powidf2 \
52	_powixf2 _powitf2 _mulsc3 _muldc3 _mulxc3 _multc3 _divsc3 _divdc3 \
53	_divxc3 _divtc3 _bswapsi2 _bswapdi2
54.if ${COMPILER_TYPE} != "clang" || ${TARGET_CPUARCH} != "arm"
55LIB2FUNCS+= _clear_cache
56.endif
57
58# The floating-point conversion routines that involve a single-word integer.
59.for mode in sf df xf
60LIB2FUNCS+= _fixuns${mode}si
61.endfor
62
63# Likewise double-word routines.
64.if ${TARGET_CPUARCH} != "aarch64" && ${TARGET_CPUARCH} != "arm" && \
65    ${TARGET_CPUARCH} != "riscv64"
66# These are implemented in an ARM specific file but will not be filtered out.
67# RISCVTODO: can't compile
68.for mode in sf df xf tf
69LIB2FUNCS+= _fix${mode}di _fixuns${mode}di
70LIB2FUNCS+= _floatdi${mode} _floatundi${mode}
71.endfor
72.endif
73
74LIB2ADD = $(LIB2FUNCS_EXTRA)
75LIB2ADD_ST = $(LIB2FUNCS_STATIC_EXTRA)
76
77# Additional sources to handle exceptions; overridden by targets as needed.
78.if ${MK_LLVM_LIBUNWIND} != "no"
79
80.PATH: ${COMPILERRTDIR}/lib/builtins
81.PATH: ${UNWINDSRCDIR}
82LIB2ADDEH = gcc_personality_v0.c \
83	int_util.c \
84	Unwind-EHABI.cpp \
85	Unwind-sjlj.c \
86	UnwindLevel1-gcc-ext.c \
87	UnwindLevel1.c \
88	UnwindRegistersRestore.S \
89	UnwindRegistersSave.S \
90	libunwind.cpp
91
92CFLAGS+=	-I${UNWINDINCDIR} -I${.CURDIR} -D_LIBUNWIND_IS_NATIVE_ONLY
93.if empty(CXXFLAGS:M-std=*)
94CXXFLAGS+=	-std=c++11
95.endif
96CXXFLAGS+=	-fno-rtti
97STATIC_CXXFLAGS+= -fvisibility=hidden -fPIC
98
99.else # MK_LLVM_LIBUNWIND
100
101.if ${TARGET_CPUARCH} == "arm"
102LIB2ADDEH =	unwind-arm.c libunwind.S pr-support.c unwind-c.c
103.else
104LIB2ADDEH = unwind-dw2.c unwind-dw2-fde-glibc.c unwind-sjlj.c gthr-gnat.c \
105	unwind-c.c
106.endif
107
108.endif # MK_LLVM_LIBUNWIND
109
110LIB2ADDEHSTATIC = $(LIB2ADDEH)
111LIB2ADDEHSHARED = $(LIB2ADDEH)
112
113# List of extra C and assembler files to add to static and shared libgcc2.
114# Assembler files should have names ending in `.asm'.
115LIB2FUNCS_EXTRA =
116
117# List of extra C and assembler files to add to static libgcc2.
118# Assembler files should have names ending in `.asm'.
119LIB2FUNCS_STATIC_EXTRA =
120
121# Defined in libgcc2.c, included only in the static library.
122# KAN: Excluded _sf_to_tf and _df_to_tf as TPBIT_FUNCS are not
123# built on any of our platforms.
124LIB2FUNCS_ST = _eprintf __gcc_bcmp
125
126FPBIT_FUNCS = _pack_sf _unpack_sf _addsub_sf _mul_sf _div_sf \
127    _fpcmp_parts_sf _compare_sf _eq_sf _ne_sf _gt_sf _ge_sf \
128    _lt_sf _le_sf _unord_sf _si_to_sf _sf_to_si _negate_sf _make_sf \
129    _sf_to_df _thenan_sf _sf_to_usi _usi_to_sf
130
131DPBIT_FUNCS = _pack_df _unpack_df _addsub_df _mul_df _div_df \
132    _fpcmp_parts_df _compare_df _eq_df _ne_df _gt_df _ge_df \
133    _lt_df _le_df _unord_df _si_to_df _df_to_si _negate_df _make_df \
134    _df_to_sf _thenan_df _df_to_usi _usi_to_df
135
136TPBIT_FUNCS = _pack_tf _unpack_tf _addsub_tf _mul_tf _div_tf \
137    _fpcmp_parts_tf _compare_tf _eq_tf _ne_tf _gt_tf _ge_tf \
138    _lt_tf _le_tf _unord_tf _si_to_tf _tf_to_si _negate_tf _make_tf \
139    _tf_to_df _tf_to_sf _thenan_tf _tf_to_usi _usi_to_tf
140
141# These might cause a divide overflow trap and so are compiled with
142# unwinder info.
143LIB2_DIVMOD_FUNCS = _divdi3 _moddi3 _udivdi3 _umoddi3 _udiv_w_sdiv _udivmoddi4
144
145#-----------------------------------------------------------------------
146#
147#	Platform specific bits.
148#	When upgrading GCC, get the following definitions from config/<cpu>/t-*
149#
150.if ${TARGET_CPUARCH} == "arm"
151#	from config/arm/t-strongarm-elf
152CFLAGS+=	-Dinhibit_libc -fno-inline
153CFLAGS.clang+=	-fheinous-gnu-extensions
154
155LIB1ASMSRC =	lib1funcs.asm
156LIB1ASMFUNCS =  _dvmd_tls _bb_init_func
157# Some compilers generate __aeabi_ functions libgcc_s is missing
158LIBADD+=	compiler_rt
159.endif
160
161.if ${TARGET_CPUARCH} == mips
162LIB2FUNCS_EXTRA = floatunsidf.c floatunsisf.c
163# ABIs other than o32 need this
164.if ${TARGET_ARCH} != "mips" && ${TARGET_ARCH} != "mipsel"
165LIB2FUNCS_EXTRA+= floatdidf.c fixunsdfsi.c
166LIB2FUNCS_EXTRA+= floatdisf.c floatundidf.c
167LIB2FUNCS_EXTRA+= fixsfdi.c floatundisf.c
168LIB2FUNCS_EXTRA+= fixdfdi.c fixunssfsi.c
169.endif
170.endif
171
172.if ${TARGET_ARCH} == "powerpc"
173#	from config/rs6000/t-ppccomm
174LIB2FUNCS_EXTRA = tramp.asm
175LIB2FUNCS_STATIC_EXTRA = eabi.asm
176.endif
177
178.if ${TARGET_ARCH} == "powerpc64"
179#	from config/rs6000/t-ppccomm
180LIB2FUNCS_EXTRA = tramp.asm
181.endif
182
183.if ${TARGET_CPUARCH} == "sparc64"
184#	from config/sparc/t-elf
185LIB1ASMSRC =   lb1spc.asm
186LIB1ASMFUNCS = _mulsi3 _divsi3 _modsi3
187.endif
188
189#-----------------------------------------------------------------------
190
191# Remove any objects from LIB2FUNCS and LIB2_DIVMOD_FUNCS that are
192# defined as optimized assembly code in LIB1ASMFUNCS.
193.if defined(LIB1ASMFUNCS)
194.for sym in ${LIB1ASMFUNCS}
195LIB2FUNCS:=	${LIB2FUNCS:S/${sym}//g}
196LIB2_DIVMOD_FUNCS:= ${LIB2_DIVMOD_FUNCS:S/${sym}//g}
197.endfor
198.endif
199
200COMMONHDRS=	tm.h tconfig.h options.h gthr-default.h
201.if ${MK_LLVM_LIBUNWIND} != "no"
202# unwind.h is a generated file when MK_LLVM_LIBUNWIND == "no", and a stale
203# copy may be left behind in OBJDIR when switching, so remove it explicitly.
204beforebuild:
205	@rm -f ${.OBJDIR}/unwind.h
206.else
207COMMONHDRS+=	unwind.h
208.endif
209
210#-----------------------------------------------------------------------
211#
212# Helpful shortcuts for compiler invocations.
213#
214HIDE =  -fvisibility=hidden -DHIDE_EXPORTS
215CC_T =	${CC} -c ${CFLAGS} ${HIDE} -fPIC
216CC_P =	${CC} -c ${CFLAGS} ${HIDE} -p -fPIC
217CC_S =	${CC} -c ${CFLAGS} ${SHARED_CFLAGS} ${PICFLAG} -DSHARED
218
219#-----------------------------------------------------------------------
220#
221# Functions from libgcc2.c
222#
223STD_CFLAGS =
224DIV_CFLAGS =	-fexceptions -fnon-call-exceptions
225
226STD_FUNCS =	${LIB2FUNCS}
227DIV_FUNCS =	${LIB2_DIVMOD_FUNCS}
228
229STD_CFILE =	libgcc2.c
230DIV_CFILE =	libgcc2.c
231
232OBJ_GRPS =	STD DIV
233
234#-----------------------------------------------------------------------
235#
236# Floating point emulation functions
237#
238.if ${TARGET_CPUARCH} == "armNOT_YET" || \
239    ${TARGET_CPUARCH} == "powerpc" || ${TARGET_CPUARCH} == "sparc64"
240
241FPBIT_CFLAGS =	-DFINE_GRAINED_LIBRARIES -DFLOAT
242DPBIT_CFLAGS =	-DFINE_GRAINED_LIBRARIES
243
244FPBIT_CFILE =	config/fp-bit.c
245DPBIT_CFILE =	config/fp-bit.c
246
247OBJ_GRPS +=	FPBIT DPBIT
248.endif
249
250#-----------------------------------------------------------------------
251#
252# Generic build rules for object groups defined above
253#
254.for T in ${OBJ_GRPS}
255${T}_OBJS_T =	${${T}_FUNCS:S/$/.o/}
256${T}_OBJS_P =	${${T}_FUNCS:S/$/.po/}
257${T}_OBJS_S =	${${T}_FUNCS:S/$/.So/}
258SOBJS +=	${${T}_FUNCS:S/$/.So/}
259
260${${T}_OBJS_T}: ${${T}_CFILE} ${COMMONHDRS}
261	${CC_T} ${${T}_CFLAGS} -DL${.PREFIX} -o ${.TARGET} ${.ALLSRC:M*.c}
262${${T}_OBJS_P}: ${${T}_CFILE} ${COMMONHDRS}
263	${CC_P} ${${T}_CFLAGS} -DL${.PREFIX} -o ${.TARGET} ${.ALLSRC:M*.c}
264${${T}_OBJS_S}: ${${T}_CFILE} ${COMMONHDRS}
265	${CC_S} ${${T}_CFLAGS} -DL${.PREFIX} -o ${.TARGET} ${.ALLSRC:M*.c}
266.endfor
267
268#-----------------------------------------------------------------------
269#
270# Extra objects coming from separate files
271#
272.if !empty(LIB2ADD)
273SOBJS +=	${LIB2ADD:R:S/$/.So/}
274.endif
275
276#-----------------------------------------------------------------------
277#
278# Objects that should be in static library only.
279#
280SYMS_ST =	${LIB2FUNCS_ST}	${LIB2ADD_ST}
281STAT_OBJS_T = 	${SYMS_ST:S/$/.o/}
282STAT_OBJS_P = 	${SYMS_ST:S/$/.po/}
283STATICOBJS  =	${SYMS_ST:S/$/.o/}
284
285${STAT_OBJS_T}:	${STD_CFILE} ${COMMONHDRS}
286	${CC_T} -DL${.PREFIX} -o ${.TARGET} ${.ALLSRC:M*.c}
287${STAT_OBJS_P}:	${STD_CFILE} ${COMMONHDRS}
288	${CC_P} -DL${.PREFIX} -o ${.TARGET} ${.ALLSRC:M*.c}
289
290#-----------------------------------------------------------------------
291#
292# Assembler files.
293#
294.if defined(LIB1ASMSRC)
295ASM_T =		${LIB1ASMFUNCS:S/$/.o/}
296ASM_P =		${LIB1ASMFUNCS:S/$/.po/}
297ASM_S =		${LIB1ASMFUNCS:S/$/.So/}
298ASM_V =		${LIB1ASMFUNCS:S/$/.vis/}
299SOBJS +=	${LIB1ASMFUNCS:S/$/.So/}
300
301${ASM_T}: ${LIB1ASMSRC} ${.PREFIX}.vis
302	${CC} -x assembler-with-cpp -c ${CFLAGS} -DL${.PREFIX} \
303	    -o ${.TARGET} -include ${.PREFIX}.vis ${.ALLSRC:N*.h:N*.vis}
304${ASM_P}: ${LIB1ASMSRC} ${.PREFIX}.vis
305	${CC} -x assembler-with-cpp -p -c ${CFLAGS} -DL${.PREFIX} \
306	    -o ${.TARGET} -include ${.PREFIX}.vis ${.ALLSRC:N*.h:N*.vis}
307${ASM_S}: ${LIB1ASMSRC}
308	${CC} -x assembler-with-cpp -c ${PICFLAG} ${CFLAGS} -DL${.PREFIX} \
309	    -o ${.TARGET} ${.ALLSRC:N*.h}
310${ASM_V}: ${LIB1ASMSRC}
311	${CC} -x assembler-with-cpp -c ${CFLAGS} -DL${.PREFIX} \
312	    -o ${.PREFIX}.vo ${.ALLSRC:N*.h}
313	( ${NM} -pg ${.PREFIX}.vo | \
314		awk 'NF == 3 && $$2 !~ /^[UN]$$/ { print "\t.hidden ", $$3 }'\
315	) > ${.TARGET}
316
317CLEANFILES += ${ASM_V} ${ASM_V:R:S/$/.vo/}
318.endif
319
320#-----------------------------------------------------------------------
321#
322# Exception handling / unwinding support.
323#
324EH_OBJS_T = ${LIB2ADDEHSTATIC:R:S/$/.o/}
325EH_OBJS_P = ${LIB2ADDEHSTATIC:R:S/$/.po/}
326EH_OBJS_S = ${LIB2ADDEHSHARED:R:S/$/.So/}
327EH_CFLAGS = -fexceptions -D__GLIBC__=3 -DElfW=__ElfN
328.if ${TARGET_CPUARCH} != "riscv64"
329# RISCVTODO: unwinding support
330SOBJS    += ${EH_OBJS_S}
331.endif
332
333.for _src in ${LIB2ADDEHSTATIC:M*.c}
334${_src:R:S/$/.o/}: ${_src} ${COMMONHDRS}
335	${CC_T} ${EH_CFLAGS} -o ${.TARGET} ${.IMPSRC}
336${_src:R:S/$/.po/}: ${_src} ${COMMONHDRS}
337	${CC_P} ${EH_CFLAGS} -o ${.TARGET} ${.IMPSRC}
338.endfor
339.for _src in ${LIB2ADDEHSHARED:M*.c}
340${_src:R:S/$/.So/}: ${_src} ${COMMONHDRS}
341	${CC_S} ${EH_CFLAGS} -o ${.TARGET} ${.IMPSRC}
342.endfor
343
344
345CLEANFILES += ${COMMONHDRS}
346CLEANFILES += cs-*.h option*
347
348#-----------------------------------------------------------------------
349#
350# Build symbol version map
351#
352SHLIB_MKMAP      = ${GCCDIR}/mkmap-symver.awk
353SHLIB_MKMAP_OPTS =
354SHLIB_MAPFILES   = ${GCCDIR}/libgcc-std.ver
355.if ${TARGET_CPUARCH} == "arm"
356SHLIB_MAPFILES  += ${GCCDIR}/config/arm/libgcc-bpabi.ver
357.endif
358VERSION_MAP      = libgcc.map
359
360libgcc.map: ${SHLIB_MKMAP} ${SHLIB_MAPFILES} ${SOBJS}
361	(  ${NM} -pg ${SOBJS};echo %% ; \
362	  cat ${SHLIB_MAPFILES} \
363	    | sed -e '/^[   ]*#/d' \
364	          -e 's/^%\(if\|else\|elif\|endif\|define\)/#\1/' \
365	    | ${CC} ${CFLAGS} -E -xassembler-with-cpp -; \
366	) | awk -f ${SHLIB_MKMAP} ${SHLIB_MKMAP_OPTS} > ${.TARGET}
367
368CLEANFILES +=	libgcc.map
369
370#-----------------------------------------------------------------------
371#
372# Build additional static libgcc_eh[_p].a libraries.
373#
374libgcc_eh.a:	${EH_OBJS_T}
375	@${ECHO} building static gcc_eh library
376	@rm -f ${.TARGET}
377	${AR} ${ARFLAGS} ${.TARGET} `lorder ${EH_OBJS_T} | tsort -q`
378	${RANLIB} ${RANLIBFLAGS} ${.TARGET}
379
380_LIBS+= libgcc_eh.a
381
382.if ${MK_PROFILE} != "no"
383libgcc_eh_p.a:	${EH_OBJS_P}
384	@${ECHO} building profiled gcc_eh library
385	@rm -f ${.TARGET}
386	${AR} ${ARFLAGS} ${.TARGET} `lorder ${EH_OBJS_P} | tsort -q`
387	${RANLIB} ${RANLIBFLAGS} ${.TARGET}
388
389_LIBS+= libgcc_eh_p.a
390.endif
391
392_libinstall: _lib-eh-install
393
394_lib-eh-install:
395.if ${MK_INSTALLLIB} != "no"
396	${INSTALL} -C -o ${LIBOWN} -g ${LIBGRP} -m ${LIBMODE} \
397		${_INSTALLFLAGS} libgcc_eh.a ${DESTDIR}${LIBDIR}
398.endif
399.if ${MK_PROFILE} != "no"
400	${INSTALL} -C -o ${LIBOWN} -g ${LIBGRP} -m ${LIBMODE} \
401		${_INSTALLFLAGS} libgcc_eh_p.a ${DESTDIR}${LIBDIR}
402.endif
403
404CLEANFILES+=	libgcc_eh.a libgcc_eh_p.a ${EH_OBJS_T} ${EH_OBJS_P}
405
406.include <bsd.lib.mk>
407
408.SUFFIXES: .vis .vo
409