Makefile revision 298107 
1# $FreeBSD: head/gnu/lib/libgcc/Makefile 298107 2016-04-16 07:45:30Z gjb $
2
3PACKAGE=	clibs
4GCCDIR=	${.CURDIR}/../../../contrib/gcc
5GCCLIB=	${.CURDIR}/../../../contrib/gcclibs
6COMPILERRTDIR=	${.CURDIR}/../../../contrib/compiler-rt
7UNWINDINCDIR=	${.CURDIR}/../../../contrib/llvm/projects/libunwind/include
8UNWINDSRCDIR=	${.CURDIR}/../../../contrib/llvm/projects/libunwind/src
9
10SHLIB_NAME=	libgcc_s.so.1
11SHLIBDIR?=	/lib
12
13.include <src.opts.mk>
14#
15# libgcc is linked in last and thus cannot depend on ssp symbols coming
16# from earlier libraries. Disable stack protection for this library.
17#
18MK_SSP=	no
19
20.include "${.CURDIR}/../../usr.bin/cc/Makefile.tgt"
21
22.if ${TARGET_CPUARCH} == "arm"
23CFLAGS+=	-DTARGET_ARM_EABI
24.endif
25
26.PATH: ${GCCDIR}/config/${GCC_CPU} ${GCCDIR}/config ${GCCDIR}
27
28CFLAGS+=	-DIN_GCC -DIN_LIBGCC2 -D__GCC_FLOAT_NOT_NEEDED \
29		-DHAVE_GTHR_DEFAULT \
30		-I${GCCLIB}/include \
31		-I${GCCDIR}/config -I${GCCDIR} -I. \
32		-I${.CURDIR}/../../usr.bin/cc/cc_tools
33
34LDFLAGS+=	-nodefaultlibs
35LIBADD+=	c
36
37SOBJS=		# added to below in various ways depending on TARGET_CPUARCH
38
39#---------------------------------------------------------------------------
40#
41# Library members defined in libgcc2.c.
42# When upgrading GCC, obtain the following list from mklibgcc.in
43#
44LIB2FUNCS= _muldi3 _negdi2 _lshrdi3 _ashldi3 _ashrdi3 \
45	_cmpdi2 _ucmpdi2 \
46	_enable_execute_stack _trampoline __main _absvsi2 _absvdi2 _addvsi3 \
47	_addvdi3 _subvsi3 _subvdi3 _mulvsi3 _mulvdi3 _negvsi2 _negvdi2 _ctors \
48	_ffssi2 _ffsdi2 _clz _clzsi2 _clzdi2 _ctzsi2 _ctzdi2 _popcount_tab \
49	_popcountsi2 _popcountdi2 _paritysi2 _paritydi2 _powisf2 _powidf2 \
50	_powixf2 _powitf2 _mulsc3 _muldc3 _mulxc3 _multc3 _divsc3 _divdc3 \
51	_divxc3 _divtc3 _bswapsi2 _bswapdi2
52.if ${COMPILER_TYPE} != "clang" || ${TARGET_CPUARCH} != "arm"
53LIB2FUNCS+= _clear_cache
54.endif
55
56# The floating-point conversion routines that involve a single-word integer.
57.for mode in sf df xf
58LIB2FUNCS+= _fixuns${mode}si
59.endfor
60
61# Likewise double-word routines.
62.if ${TARGET_CPUARCH} != "aarch64" && ${TARGET_CPUARCH} != "arm" && \
63    ${TARGET_CPUARCH} != "riscv64"
64# These are implemented in an ARM specific file but will not be filtered out.
65# RISCVTODO: can't compile
66.for mode in sf df xf tf
67LIB2FUNCS+= _fix${mode}di _fixuns${mode}di
68LIB2FUNCS+= _floatdi${mode} _floatundi${mode}
69.endfor
70.endif
71
72LIB2ADD = $(LIB2FUNCS_EXTRA)
73LIB2ADD_ST = $(LIB2FUNCS_STATIC_EXTRA)
74
75# Additional sources to handle exceptions; overridden by targets as needed.
76.if ${MK_LLVM_LIBUNWIND} != "no"
77
78.PATH: ${COMPILERRTDIR}/lib/builtins
79.PATH: ${UNWINDSRCDIR}
80LIB2ADDEH = gcc_personality_v0.c \
81	int_util.c \
82	Unwind-EHABI.cpp \
83	Unwind-sjlj.c \
84	UnwindLevel1-gcc-ext.c \
85	UnwindLevel1.c \
86	UnwindRegistersRestore.S \
87	UnwindRegistersSave.S \
88	libunwind.cpp
89
90CFLAGS+=	-I${UNWINDINCDIR} -I${.CURDIR}
91.if empty(CXXFLAGS:M-std=*)
92CXXFLAGS+=	-std=c++11
93.endif
94CXXFLAGS+=	-fno-rtti
95STATIC_CXXFLAGS+= -fvisibility=hidden -fPIC
96
97.else # MK_LLVM_LIBUNWIND
98
99.if ${TARGET_CPUARCH} == "arm"
100LIB2ADDEH =	unwind-arm.c libunwind.S pr-support.c unwind-c.c
101.else
102LIB2ADDEH = unwind-dw2.c unwind-dw2-fde-glibc.c unwind-sjlj.c gthr-gnat.c \
103	unwind-c.c
104.endif
105
106.endif # MK_LLVM_LIBUNWIND
107
108LIB2ADDEHSTATIC = $(LIB2ADDEH)
109LIB2ADDEHSHARED = $(LIB2ADDEH)
110
111# List of extra C and assembler files to add to static and shared libgcc2.
112# Assembler files should have names ending in `.asm'.
113LIB2FUNCS_EXTRA =
114
115# List of extra C and assembler files to add to static libgcc2.
116# Assembler files should have names ending in `.asm'.
117LIB2FUNCS_STATIC_EXTRA =
118
119# Defined in libgcc2.c, included only in the static library.
120# KAN: Excluded _sf_to_tf and _df_to_tf as TPBIT_FUNCS are not
121# built on any of our platforms.
122LIB2FUNCS_ST = _eprintf __gcc_bcmp
123
124FPBIT_FUNCS = _pack_sf _unpack_sf _addsub_sf _mul_sf _div_sf \
125    _fpcmp_parts_sf _compare_sf _eq_sf _ne_sf _gt_sf _ge_sf \
126    _lt_sf _le_sf _unord_sf _si_to_sf _sf_to_si _negate_sf _make_sf \
127    _sf_to_df _thenan_sf _sf_to_usi _usi_to_sf
128
129DPBIT_FUNCS = _pack_df _unpack_df _addsub_df _mul_df _div_df \
130    _fpcmp_parts_df _compare_df _eq_df _ne_df _gt_df _ge_df \
131    _lt_df _le_df _unord_df _si_to_df _df_to_si _negate_df _make_df \
132    _df_to_sf _thenan_df _df_to_usi _usi_to_df
133
134TPBIT_FUNCS = _pack_tf _unpack_tf _addsub_tf _mul_tf _div_tf \
135    _fpcmp_parts_tf _compare_tf _eq_tf _ne_tf _gt_tf _ge_tf \
136    _lt_tf _le_tf _unord_tf _si_to_tf _tf_to_si _negate_tf _make_tf \
137    _tf_to_df _tf_to_sf _thenan_tf _tf_to_usi _usi_to_tf
138
139# These might cause a divide overflow trap and so are compiled with
140# unwinder info.
141LIB2_DIVMOD_FUNCS = _divdi3 _moddi3 _udivdi3 _umoddi3 _udiv_w_sdiv _udivmoddi4
142
143#-----------------------------------------------------------------------
144#
145#	Platform specific bits.
146#	When upgrading GCC, get the following definitions from config/<cpu>/t-*
147#
148.if ${TARGET_CPUARCH} == "arm"
149#	from config/arm/t-strongarm-elf
150CFLAGS+=	-Dinhibit_libc -fno-inline
151CFLAGS.clang+=	-fheinous-gnu-extensions
152
153LIB1ASMSRC =	lib1funcs.asm
154LIB1ASMFUNCS =  _dvmd_tls _bb_init_func
155# Some compilers generate __aeabi_ functions libgcc_s is missing
156LIBADD+=	compiler_rt
157.endif
158
159.if ${TARGET_CPUARCH} == mips
160LIB2FUNCS_EXTRA = floatunsidf.c floatunsisf.c
161# ABIs other than o32 need this
162.if ${TARGET_ARCH} != "mips" && ${TARGET_ARCH} != "mipsel"
163LIB2FUNCS_EXTRA+= floatdidf.c fixunsdfsi.c
164LIB2FUNCS_EXTRA+= floatdisf.c floatundidf.c
165LIB2FUNCS_EXTRA+= fixsfdi.c floatundisf.c
166LIB2FUNCS_EXTRA+= fixdfdi.c fixunssfsi.c
167.endif
168.endif
169
170.if ${TARGET_ARCH} == "powerpc"
171#	from config/rs6000/t-ppccomm
172LIB2FUNCS_EXTRA = tramp.asm
173LIB2FUNCS_STATIC_EXTRA = eabi.asm
174.endif
175
176.if ${TARGET_ARCH} == "powerpc64"
177#	from config/rs6000/t-ppccomm
178LIB2FUNCS_EXTRA = tramp.asm
179.endif
180
181.if ${TARGET_CPUARCH} == "sparc64"
182#	from config/sparc/t-elf
183LIB1ASMSRC =   lb1spc.asm
184LIB1ASMFUNCS = _mulsi3 _divsi3 _modsi3
185.endif
186
187#-----------------------------------------------------------------------
188
189# Remove any objects from LIB2FUNCS and LIB2_DIVMOD_FUNCS that are
190# defined as optimized assembly code in LIB1ASMFUNCS.
191.if defined(LIB1ASMFUNCS)
192.for sym in ${LIB1ASMFUNCS}
193LIB2FUNCS:=	${LIB2FUNCS:S/${sym}//g}
194LIB2_DIVMOD_FUNCS:= ${LIB2_DIVMOD_FUNCS:S/${sym}//g}
195.endfor
196.endif
197
198COMMONHDRS=	tm.h tconfig.h options.h gthr-default.h
199.if ${MK_LLVM_LIBUNWIND} != "no"
200# unwind.h is a generated file when MK_LLVM_LIBUNWIND == "no", and a stale
201# copy may be left behind in OBJDIR when switching, so remove it explicitly.
202beforebuild:
203	@rm -f ${.OBJDIR}/unwind.h
204.else
205COMMONHDRS+=	unwind.h
206.endif
207
208#-----------------------------------------------------------------------
209#
210# Helpful shortcuts for compiler invocations.
211#
212HIDE =  -fvisibility=hidden -DHIDE_EXPORTS
213CC_T =	${CC} -c ${CFLAGS} ${HIDE} -fPIC
214CC_P =	${CC} -c ${CFLAGS} ${HIDE} -p -fPIC
215CC_S =	${CC} -c ${CFLAGS} ${SHARED_CFLAGS} ${PICFLAG} -DSHARED
216
217#-----------------------------------------------------------------------
218#
219# Functions from libgcc2.c
220#
221STD_CFLAGS =
222DIV_CFLAGS =	-fexceptions -fnon-call-exceptions
223
224STD_FUNCS =	${LIB2FUNCS}
225DIV_FUNCS =	${LIB2_DIVMOD_FUNCS}
226
227STD_CFILE =	libgcc2.c
228DIV_CFILE =	libgcc2.c
229
230OBJ_GRPS =	STD DIV
231
232#-----------------------------------------------------------------------
233#
234# Floating point emulation functions
235#
236.if ${TARGET_CPUARCH} == "armNOT_YET" || \
237    ${TARGET_CPUARCH} == "powerpc" || ${TARGET_CPUARCH} == "sparc64"
238
239FPBIT_CFLAGS =	-DFINE_GRAINED_LIBRARIES -DFLOAT
240DPBIT_CFLAGS =	-DFINE_GRAINED_LIBRARIES
241
242FPBIT_CFILE =	config/fp-bit.c
243DPBIT_CFILE =	config/fp-bit.c
244
245OBJ_GRPS +=	FPBIT DPBIT
246.endif
247
248#-----------------------------------------------------------------------
249#
250# Generic build rules for object groups defined above
251#
252.for T in ${OBJ_GRPS}
253${T}_OBJS_T =	${${T}_FUNCS:S/$/.o/}
254${T}_OBJS_P =	${${T}_FUNCS:S/$/.po/}
255${T}_OBJS_S =	${${T}_FUNCS:S/$/.So/}
256SOBJS +=	${${T}_FUNCS:S/$/.So/}
257
258${${T}_OBJS_T}: ${${T}_CFILE} ${COMMONHDRS}
259	${CC_T} ${${T}_CFLAGS} -DL${.PREFIX} -o ${.TARGET} ${.ALLSRC:M*.c}
260${${T}_OBJS_P}: ${${T}_CFILE} ${COMMONHDRS}
261	${CC_P} ${${T}_CFLAGS} -DL${.PREFIX} -o ${.TARGET} ${.ALLSRC:M*.c}
262${${T}_OBJS_S}: ${${T}_CFILE} ${COMMONHDRS}
263	${CC_S} ${${T}_CFLAGS} -DL${.PREFIX} -o ${.TARGET} ${.ALLSRC:M*.c}
264.endfor
265
266#-----------------------------------------------------------------------
267#
268# Extra objects coming from separate files
269#
270.if !empty(LIB2ADD)
271SOBJS +=	${LIB2ADD:R:S/$/.So/}
272.endif
273
274#-----------------------------------------------------------------------
275#
276# Objects that should be in static library only.
277#
278SYMS_ST =	${LIB2FUNCS_ST}	${LIB2ADD_ST}
279STAT_OBJS_T = 	${SYMS_ST:S/$/.o/}
280STAT_OBJS_P = 	${SYMS_ST:S/$/.po/}
281STATICOBJS  =	${SYMS_ST:S/$/.o/}
282
283${STAT_OBJS_T}:	${STD_CFILE} ${COMMONHDRS}
284	${CC_T} -DL${.PREFIX} -o ${.TARGET} ${.ALLSRC:M*.c}
285${STAT_OBJS_P}:	${STD_CFILE} ${COMMONHDRS}
286	${CC_P} -DL${.PREFIX} -o ${.TARGET} ${.ALLSRC:M*.c}
287
288#-----------------------------------------------------------------------
289#
290# Assembler files.
291#
292.if defined(LIB1ASMSRC)
293ASM_T =		${LIB1ASMFUNCS:S/$/.o/}
294ASM_P =		${LIB1ASMFUNCS:S/$/.po/}
295ASM_S =		${LIB1ASMFUNCS:S/$/.So/}
296ASM_V =		${LIB1ASMFUNCS:S/$/.vis/}
297SOBJS +=	${LIB1ASMFUNCS:S/$/.So/}
298
299${ASM_T}: ${LIB1ASMSRC} ${.PREFIX}.vis
300	${CC} -x assembler-with-cpp -c ${CFLAGS} -DL${.PREFIX} \
301	    -o ${.TARGET} -include ${.PREFIX}.vis ${.ALLSRC:N*.h:N*.vis}
302${ASM_P}: ${LIB1ASMSRC} ${.PREFIX}.vis
303	${CC} -x assembler-with-cpp -p -c ${CFLAGS} -DL${.PREFIX} \
304	    -o ${.TARGET} -include ${.PREFIX}.vis ${.ALLSRC:N*.h:N*.vis}
305${ASM_S}: ${LIB1ASMSRC}
306	${CC} -x assembler-with-cpp -c ${PICFLAG} ${CFLAGS} -DL${.PREFIX} \
307	    -o ${.TARGET} ${.ALLSRC:N*.h}
308${ASM_V}: ${LIB1ASMSRC}
309	${CC} -x assembler-with-cpp -c ${CFLAGS} -DL${.PREFIX} \
310	    -o ${.PREFIX}.vo ${.ALLSRC:N*.h}
311	( ${NM} -pg ${.PREFIX}.vo | \
312		awk 'NF == 3 && $$2 !~ /^[UN]$$/ { print "\t.hidden ", $$3 }'\
313	) > ${.TARGET}
314
315CLEANFILES += ${ASM_V} ${ASM_V:R:S/$/.vo/}
316.endif
317
318#-----------------------------------------------------------------------
319#
320# Exception handling / unwinding support.
321#
322EH_OBJS_T = ${LIB2ADDEHSTATIC:R:S/$/.o/}
323EH_OBJS_P = ${LIB2ADDEHSTATIC:R:S/$/.po/}
324EH_OBJS_S = ${LIB2ADDEHSHARED:R:S/$/.So/}
325EH_CFLAGS = -fexceptions -D__GLIBC__=3 -DElfW=__ElfN
326.if ${TARGET_CPUARCH} != "riscv64"
327# RISCVTODO: unwinding support
328SOBJS    += ${EH_OBJS_S}
329.endif
330
331.for _src in ${LIB2ADDEHSTATIC:M*.c}
332${_src:R:S/$/.o/}: ${_src} ${COMMONHDRS}
333	${CC_T} ${EH_CFLAGS} -o ${.TARGET} ${.IMPSRC}
334${_src:R:S/$/.po/}: ${_src} ${COMMONHDRS}
335	${CC_P} ${EH_CFLAGS} -o ${.TARGET} ${.IMPSRC}
336.endfor
337.for _src in ${LIB2ADDEHSHARED:M*.c}
338${_src:R:S/$/.So/}: ${_src} ${COMMONHDRS}
339	${CC_S} ${EH_CFLAGS} -o ${.TARGET} ${.IMPSRC}
340.endfor
341
342
343#-----------------------------------------------------------------------
344#
345# Generated headers
346#
347${COMMONHDRS}: ${.CURDIR}/../../usr.bin/cc/cc_tools/Makefile .PHONY
348	(cd ${.CURDIR}; ${MAKE} -f ${.ALLSRC} MFILE=${.ALLSRC} GCCDIR=${GCCDIR} ${.TARGET})
349
350CLEANFILES += ${COMMONHDRS}
351CLEANFILES += cs-*.h option*
352
353#-----------------------------------------------------------------------
354#
355# Build symbol version map
356#
357SHLIB_MKMAP      = ${GCCDIR}/mkmap-symver.awk
358SHLIB_MKMAP_OPTS =
359SHLIB_MAPFILES   = ${GCCDIR}/libgcc-std.ver
360.if ${TARGET_CPUARCH} == "arm"
361SHLIB_MAPFILES  += ${GCCDIR}/config/arm/libgcc-bpabi.ver
362.endif
363VERSION_MAP      = libgcc.map
364
365libgcc.map: ${SHLIB_MKMAP} ${SHLIB_MAPFILES} ${SOBJS}
366	(  ${NM} -pg ${SOBJS};echo %% ; \
367	  cat ${SHLIB_MAPFILES} \
368	    | sed -e '/^[   ]*#/d' \
369	          -e 's/^%\(if\|else\|elif\|endif\|define\)/#\1/' \
370	    | ${CC} ${CFLAGS} -E -xassembler-with-cpp -; \
371	) | awk -f ${SHLIB_MKMAP} ${SHLIB_MKMAP_OPTS} > ${.TARGET}
372
373CLEANFILES +=	libgcc.map
374
375#-----------------------------------------------------------------------
376#
377# Build additional static libgcc_eh[_p].a libraries.
378#
379libgcc_eh.a:	${EH_OBJS_T}
380	@${ECHO} building static gcc_eh library
381	@rm -f ${.TARGET}
382	${AR} ${ARFLAGS} ${.TARGET} `lorder ${EH_OBJS_T} | tsort -q`
383	${RANLIB} ${RANLIBFLAGS} ${.TARGET}
384
385_LIBS+= libgcc_eh.a
386
387.if ${MK_PROFILE} != "no"
388libgcc_eh_p.a:	${EH_OBJS_P}
389	@${ECHO} building profiled gcc_eh library
390	@rm -f ${.TARGET}
391	${AR} ${ARFLAGS} ${.TARGET} `lorder ${EH_OBJS_P} | tsort -q`
392	${RANLIB} ${RANLIBFLAGS} ${.TARGET}
393
394_LIBS+= libgcc_eh_p.a
395.endif
396
397_libinstall: _lib-eh-install
398
399_lib-eh-install:
400.if ${MK_INSTALLLIB} != "no"
401	${INSTALL} -C -o ${LIBOWN} -g ${LIBGRP} -m ${LIBMODE} \
402		${_INSTALLFLAGS} libgcc_eh.a ${DESTDIR}${LIBDIR}
403.endif
404.if ${MK_PROFILE} != "no"
405	${INSTALL} -C -o ${LIBOWN} -g ${LIBGRP} -m ${LIBMODE} \
406		${_INSTALLFLAGS} libgcc_eh_p.a ${DESTDIR}${LIBDIR}
407.endif
408
409CLEANFILES+=	libgcc_eh.a libgcc_eh_p.a ${EH_OBJS_T} ${EH_OBJS_P}
410
411.include <bsd.lib.mk>
412
413.SUFFIXES: .vis .vo
414