Makefile revision 296012 
1# $FreeBSD: head/gnu/lib/libgcc/Makefile 296012 2016-02-24 22:27:18Z bdrewery $
2
3GCCDIR=	${.CURDIR}/../../../contrib/gcc
4GCCLIB=	${.CURDIR}/../../../contrib/gcclibs
5COMPILERRTDIR=	${.CURDIR}/../../../contrib/compiler-rt
6UNWINDINCDIR=	${.CURDIR}/../../../contrib/llvm/projects/libunwind/include
7UNWINDSRCDIR=	${.CURDIR}/../../../contrib/llvm/projects/libunwind/src
8
9SHLIB_NAME=	libgcc_s.so.1
10SHLIBDIR?=	/lib
11
12.include <src.opts.mk>
13#
14# libgcc is linked in last and thus cannot depend on ssp symbols coming
15# from earlier libraries. Disable stack protection for this library.
16#
17MK_SSP=	no
18
19.include "${.CURDIR}/../../usr.bin/cc/Makefile.tgt"
20
21.if ${TARGET_CPUARCH} == "arm"
22CFLAGS+=	-DTARGET_ARM_EABI
23.endif
24
25.PATH: ${GCCDIR}/config/${GCC_CPU} ${GCCDIR}/config ${GCCDIR}
26
27CFLAGS+=	-DIN_GCC -DIN_LIBGCC2 -D__GCC_FLOAT_NOT_NEEDED \
28		-DHAVE_GTHR_DEFAULT \
29		-I${GCCLIB}/include \
30		-I${GCCDIR}/config -I${GCCDIR} -I. \
31		-I${.CURDIR}/../../usr.bin/cc/cc_tools
32
33LDFLAGS+=	-nodefaultlibs
34LIBADD+=	c
35
36SOBJS=		# added to below in various ways depending on TARGET_CPUARCH
37
38#---------------------------------------------------------------------------
39#
40# Library members defined in libgcc2.c.
41# When upgrading GCC, obtain the following list from mklibgcc.in
42#
43LIB2FUNCS= _muldi3 _negdi2 _lshrdi3 _ashldi3 _ashrdi3 \
44	_cmpdi2 _ucmpdi2 \
45	_enable_execute_stack _trampoline __main _absvsi2 _absvdi2 _addvsi3 \
46	_addvdi3 _subvsi3 _subvdi3 _mulvsi3 _mulvdi3 _negvsi2 _negvdi2 _ctors \
47	_ffssi2 _ffsdi2 _clz _clzsi2 _clzdi2 _ctzsi2 _ctzdi2 _popcount_tab \
48	_popcountsi2 _popcountdi2 _paritysi2 _paritydi2 _powisf2 _powidf2 \
49	_powixf2 _powitf2 _mulsc3 _muldc3 _mulxc3 _multc3 _divsc3 _divdc3 \
50	_divxc3 _divtc3 _bswapsi2 _bswapdi2
51.if ${COMPILER_TYPE} != "clang" || ${TARGET_CPUARCH} != "arm"
52LIB2FUNCS+= _clear_cache
53.endif
54
55# The floating-point conversion routines that involve a single-word integer.
56.for mode in sf df xf
57LIB2FUNCS+= _fixuns${mode}si
58.endfor
59
60# Likewise double-word routines.
61.if ${TARGET_CPUARCH} != "aarch64" && ${TARGET_CPUARCH} != "arm" && \
62    ${TARGET_CPUARCH} != "riscv64"
63# These are implemented in an ARM specific file but will not be filtered out.
64# RISCVTODO: can't compile
65.for mode in sf df xf tf
66LIB2FUNCS+= _fix${mode}di _fixuns${mode}di
67LIB2FUNCS+= _floatdi${mode} _floatundi${mode}
68.endfor
69.endif
70
71LIB2ADD = $(LIB2FUNCS_EXTRA)
72LIB2ADD_ST = $(LIB2FUNCS_STATIC_EXTRA)
73
74# Additional sources to handle exceptions; overridden by targets as needed.
75.if ${MK_LLVM_LIBUNWIND} != "no"
76
77.PATH: ${COMPILERRTDIR}/lib/builtins
78.PATH: ${UNWINDSRCDIR}
79LIB2ADDEH = gcc_personality_v0.c \
80	int_util.c \
81	Unwind-EHABI.cpp \
82	Unwind-sjlj.c \
83	UnwindLevel1-gcc-ext.c \
84	UnwindLevel1.c \
85	UnwindRegistersRestore.S \
86	UnwindRegistersSave.S \
87	libunwind.cpp
88
89CFLAGS+=	-I${UNWINDINCDIR} -I${.CURDIR}
90.if empty(CXXFLAGS:M-std=*)
91CXXFLAGS+=	-std=c++11
92.endif
93CXXFLAGS+=	-fno-rtti
94STATIC_CXXFLAGS+= -fvisibility=hidden -fPIC
95
96.else # MK_LLVM_LIBUNWIND
97
98.if ${TARGET_CPUARCH} == "arm"
99LIB2ADDEH =	unwind-arm.c libunwind.S pr-support.c unwind-c.c
100.else
101LIB2ADDEH = unwind-dw2.c unwind-dw2-fde-glibc.c unwind-sjlj.c gthr-gnat.c \
102	unwind-c.c
103.endif
104
105.endif # MK_LLVM_LIBUNWIND
106
107LIB2ADDEHSTATIC = $(LIB2ADDEH)
108LIB2ADDEHSHARED = $(LIB2ADDEH)
109
110# List of extra C and assembler files to add to static and shared libgcc2.
111# Assembler files should have names ending in `.asm'.
112LIB2FUNCS_EXTRA =
113
114# List of extra C and assembler files to add to static libgcc2.
115# Assembler files should have names ending in `.asm'.
116LIB2FUNCS_STATIC_EXTRA =
117
118# Defined in libgcc2.c, included only in the static library.
119# KAN: Excluded _sf_to_tf and _df_to_tf as TPBIT_FUNCS are not
120# built on any of our platforms.
121LIB2FUNCS_ST = _eprintf __gcc_bcmp
122
123FPBIT_FUNCS = _pack_sf _unpack_sf _addsub_sf _mul_sf _div_sf \
124    _fpcmp_parts_sf _compare_sf _eq_sf _ne_sf _gt_sf _ge_sf \
125    _lt_sf _le_sf _unord_sf _si_to_sf _sf_to_si _negate_sf _make_sf \
126    _sf_to_df _thenan_sf _sf_to_usi _usi_to_sf
127
128DPBIT_FUNCS = _pack_df _unpack_df _addsub_df _mul_df _div_df \
129    _fpcmp_parts_df _compare_df _eq_df _ne_df _gt_df _ge_df \
130    _lt_df _le_df _unord_df _si_to_df _df_to_si _negate_df _make_df \
131    _df_to_sf _thenan_df _df_to_usi _usi_to_df
132
133TPBIT_FUNCS = _pack_tf _unpack_tf _addsub_tf _mul_tf _div_tf \
134    _fpcmp_parts_tf _compare_tf _eq_tf _ne_tf _gt_tf _ge_tf \
135    _lt_tf _le_tf _unord_tf _si_to_tf _tf_to_si _negate_tf _make_tf \
136    _tf_to_df _tf_to_sf _thenan_tf _tf_to_usi _usi_to_tf
137
138# These might cause a divide overflow trap and so are compiled with
139# unwinder info.
140LIB2_DIVMOD_FUNCS = _divdi3 _moddi3 _udivdi3 _umoddi3 _udiv_w_sdiv _udivmoddi4
141
142#-----------------------------------------------------------------------
143#
144#	Platform specific bits.
145#	When upgrading GCC, get the following definitions from config/<cpu>/t-*
146#
147.if ${TARGET_CPUARCH} == "arm"
148#	from config/arm/t-strongarm-elf
149CFLAGS+=	-Dinhibit_libc -fno-inline
150CFLAGS.clang+=	-fheinous-gnu-extensions
151
152LIB1ASMSRC =	lib1funcs.asm
153LIB1ASMFUNCS =  _dvmd_tls _bb_init_func
154# Some compilers generate __aeabi_ functions libgcc_s is missing
155LIBADD+=	compiler_rt
156.endif
157
158.if ${TARGET_CPUARCH} == mips
159LIB2FUNCS_EXTRA = floatunsidf.c floatunsisf.c
160# ABIs other than o32 need this
161.if ${TARGET_ARCH} != "mips" && ${TARGET_ARCH} != "mipsel"
162LIB2FUNCS_EXTRA+= floatdidf.c fixunsdfsi.c
163LIB2FUNCS_EXTRA+= floatdisf.c floatundidf.c
164LIB2FUNCS_EXTRA+= fixsfdi.c floatundisf.c
165LIB2FUNCS_EXTRA+= fixdfdi.c fixunssfsi.c
166.endif
167.endif
168
169.if ${TARGET_ARCH} == "powerpc"
170#	from config/rs6000/t-ppccomm
171LIB2FUNCS_EXTRA = tramp.asm
172LIB2FUNCS_STATIC_EXTRA = eabi.asm
173.endif
174
175.if ${TARGET_ARCH} == "powerpc64"
176#	from config/rs6000/t-ppccomm
177LIB2FUNCS_EXTRA = tramp.asm
178.endif
179
180.if ${TARGET_CPUARCH} == "sparc64"
181#	from config/sparc/t-elf
182LIB1ASMSRC =   lb1spc.asm
183LIB1ASMFUNCS = _mulsi3 _divsi3 _modsi3
184.endif
185
186#-----------------------------------------------------------------------
187
188# Remove any objects from LIB2FUNCS and LIB2_DIVMOD_FUNCS that are
189# defined as optimized assembly code in LIB1ASMFUNCS.
190.if defined(LIB1ASMFUNCS)
191.for sym in ${LIB1ASMFUNCS}
192LIB2FUNCS:=	${LIB2FUNCS:S/${sym}//g}
193LIB2_DIVMOD_FUNCS:= ${LIB2_DIVMOD_FUNCS:S/${sym}//g}
194.endfor
195.endif
196
197COMMONHDRS=	tm.h tconfig.h options.h gthr-default.h
198.if ${MK_LLVM_LIBUNWIND} != "no"
199# unwind.h is a generated file when MK_LLVM_LIBUNWIND == "no", and a stale
200# copy may be left behind in OBJDIR when switching, so remove it explicitly.
201beforebuild:
202	@rm -f ${.OBJDIR}/unwind.h
203.else
204COMMONHDRS+=	unwind.h
205.endif
206
207#-----------------------------------------------------------------------
208#
209# Helpful shortcuts for compiler invocations.
210#
211HIDE =  -fvisibility=hidden -DHIDE_EXPORTS
212CC_T =	${CC} -c ${CFLAGS} ${HIDE} -fPIC
213CC_P =	${CC} -c ${CFLAGS} ${HIDE} -p -fPIC
214CC_S =	${CC} -c ${CFLAGS} ${SHARED_CFLAGS} ${PICFLAG} -DSHARED
215
216#-----------------------------------------------------------------------
217#
218# Functions from libgcc2.c
219#
220STD_CFLAGS =
221DIV_CFLAGS =	-fexceptions -fnon-call-exceptions
222
223STD_FUNCS =	${LIB2FUNCS}
224DIV_FUNCS =	${LIB2_DIVMOD_FUNCS}
225
226STD_CFILE =	libgcc2.c
227DIV_CFILE =	libgcc2.c
228
229OBJ_GRPS =	STD DIV
230
231#-----------------------------------------------------------------------
232#
233# Floating point emulation functions
234#
235.if ${TARGET_CPUARCH} == "armNOT_YET" || \
236    ${TARGET_CPUARCH} == "powerpc" || ${TARGET_CPUARCH} == "sparc64"
237
238FPBIT_CFLAGS =	-DFINE_GRAINED_LIBRARIES -DFLOAT
239DPBIT_CFLAGS =	-DFINE_GRAINED_LIBRARIES
240
241FPBIT_CFILE =	config/fp-bit.c
242DPBIT_CFILE =	config/fp-bit.c
243
244OBJ_GRPS +=	FPBIT DPBIT
245.endif
246
247#-----------------------------------------------------------------------
248#
249# Generic build rules for object groups defined above
250#
251.for T in ${OBJ_GRPS}
252${T}_OBJS_T =	${${T}_FUNCS:S/$/.o/}
253${T}_OBJS_P =	${${T}_FUNCS:S/$/.po/}
254${T}_OBJS_S =	${${T}_FUNCS:S/$/.So/}
255SOBJS +=	${${T}_FUNCS:S/$/.So/}
256
257${${T}_OBJS_T}: ${${T}_CFILE} ${COMMONHDRS}
258	${CC_T} ${${T}_CFLAGS} -DL${.PREFIX} -o ${.TARGET} ${.ALLSRC:M*.c}
259${${T}_OBJS_P}: ${${T}_CFILE} ${COMMONHDRS}
260	${CC_P} ${${T}_CFLAGS} -DL${.PREFIX} -o ${.TARGET} ${.ALLSRC:M*.c}
261${${T}_OBJS_S}: ${${T}_CFILE} ${COMMONHDRS}
262	${CC_S} ${${T}_CFLAGS} -DL${.PREFIX} -o ${.TARGET} ${.ALLSRC:M*.c}
263.endfor
264
265#-----------------------------------------------------------------------
266#
267# Extra objects coming from separate files
268#
269.if !empty(LIB2ADD)
270SOBJS +=	${LIB2ADD:R:S/$/.So/}
271.endif
272
273#-----------------------------------------------------------------------
274#
275# Objects that should be in static library only.
276#
277SYMS_ST =	${LIB2FUNCS_ST}	${LIB2ADD_ST}
278STAT_OBJS_T = 	${SYMS_ST:S/$/.o/}
279STAT_OBJS_P = 	${SYMS_ST:S/$/.po/}
280STATICOBJS  =	${SYMS_ST:S/$/.o/}
281
282${STAT_OBJS_T}:	${STD_CFILE} ${COMMONHDRS}
283	${CC_T} -DL${.PREFIX} -o ${.TARGET} ${.ALLSRC:M*.c}
284${STAT_OBJS_P}:	${STD_CFILE} ${COMMONHDRS}
285	${CC_P} -DL${.PREFIX} -o ${.TARGET} ${.ALLSRC:M*.c}
286
287#-----------------------------------------------------------------------
288#
289# Assembler files.
290#
291.if defined(LIB1ASMSRC)
292ASM_T =		${LIB1ASMFUNCS:S/$/.o/}
293ASM_P =		${LIB1ASMFUNCS:S/$/.po/}
294ASM_S =		${LIB1ASMFUNCS:S/$/.So/}
295ASM_V =		${LIB1ASMFUNCS:S/$/.vis/}
296SOBJS +=	${LIB1ASMFUNCS:S/$/.So/}
297
298${ASM_T}: ${LIB1ASMSRC} ${.PREFIX}.vis
299	${CC} -x assembler-with-cpp -c ${CFLAGS} -DL${.PREFIX} \
300	    -o ${.TARGET} -include ${.PREFIX}.vis ${.ALLSRC:N*.h:N*.vis}
301${ASM_P}: ${LIB1ASMSRC} ${.PREFIX}.vis
302	${CC} -x assembler-with-cpp -p -c ${CFLAGS} -DL${.PREFIX} \
303	    -o ${.TARGET} -include ${.PREFIX}.vis ${.ALLSRC:N*.h:N*.vis}
304${ASM_S}: ${LIB1ASMSRC}
305	${CC} -x assembler-with-cpp -c ${PICFLAG} ${CFLAGS} -DL${.PREFIX} \
306	    -o ${.TARGET} ${.ALLSRC:N*.h}
307${ASM_V}: ${LIB1ASMSRC}
308	${CC} -x assembler-with-cpp -c ${CFLAGS} -DL${.PREFIX} \
309	    -o ${.PREFIX}.vo ${.ALLSRC:N*.h}
310	( ${NM} -pg ${.PREFIX}.vo | \
311		awk 'NF == 3 && $$2 !~ /^[UN]$$/ { print "\t.hidden ", $$3 }'\
312	) > ${.TARGET}
313
314CLEANFILES += ${ASM_V} ${ASM_V:R:S/$/.vo/}
315.endif
316
317#-----------------------------------------------------------------------
318#
319# Exception handling / unwinding support.
320#
321EH_OBJS_T = ${LIB2ADDEHSTATIC:R:S/$/.o/}
322EH_OBJS_P = ${LIB2ADDEHSTATIC:R:S/$/.po/}
323EH_OBJS_S = ${LIB2ADDEHSHARED:R:S/$/.So/}
324EH_CFLAGS = -fexceptions -D__GLIBC__=3 -DElfW=__ElfN
325.if ${TARGET_CPUARCH} != "riscv64"
326# RISCVTODO: unwinding support
327SOBJS    += ${EH_OBJS_S}
328.endif
329
330.for _src in ${LIB2ADDEHSTATIC:M*.c}
331${_src:R:S/$/.o/}: ${_src} ${COMMONHDRS}
332	${CC_T} ${EH_CFLAGS} -o ${.TARGET} ${.IMPSRC}
333${_src:R:S/$/.po/}: ${_src} ${COMMONHDRS}
334	${CC_P} ${EH_CFLAGS} -o ${.TARGET} ${.IMPSRC}
335.endfor
336.for _src in ${LIB2ADDEHSHARED:M*.c}
337${_src:R:S/$/.So/}: ${_src} ${COMMONHDRS}
338	${CC_S} ${EH_CFLAGS} -o ${.TARGET} ${.IMPSRC}
339.endfor
340
341
342#-----------------------------------------------------------------------
343#
344# Generated headers
345#
346${COMMONHDRS}: ${.CURDIR}/../../usr.bin/cc/cc_tools/Makefile
347	(cd ${.CURDIR}; ${MAKE} -f ${.ALLSRC} MFILE=${.ALLSRC} GCCDIR=${GCCDIR} ${.TARGET})
348
349CLEANFILES += ${COMMONHDRS}
350CLEANFILES += cs-*.h option*
351
352#-----------------------------------------------------------------------
353#
354# Build symbol version map
355#
356SHLIB_MKMAP      = ${GCCDIR}/mkmap-symver.awk
357SHLIB_MKMAP_OPTS =
358SHLIB_MAPFILES   = ${GCCDIR}/libgcc-std.ver
359.if ${TARGET_CPUARCH} == "arm"
360SHLIB_MAPFILES  += ${GCCDIR}/config/arm/libgcc-bpabi.ver
361.endif
362VERSION_MAP      = libgcc.map
363
364libgcc.map: ${SHLIB_MKMAP} ${SHLIB_MAPFILES} ${SOBJS}
365	(  ${NM} -pg ${SOBJS};echo %% ; \
366	  cat ${SHLIB_MAPFILES} \
367	    | sed -e '/^[   ]*#/d' \
368	          -e 's/^%\(if\|else\|elif\|endif\|define\)/#\1/' \
369	    | ${CC} ${CFLAGS} -E -xassembler-with-cpp -; \
370	) | awk -f ${SHLIB_MKMAP} ${SHLIB_MKMAP_OPTS} > ${.TARGET}
371
372CLEANFILES +=	libgcc.map
373
374#-----------------------------------------------------------------------
375#
376# Build additional static libgcc_eh[_p].a libraries.
377#
378libgcc_eh.a:	${EH_OBJS_T}
379	@${ECHO} building static gcc_eh library
380	@rm -f ${.TARGET}
381	${AR} ${ARFLAGS} ${.TARGET} `lorder ${EH_OBJS_T} | tsort -q`
382	${RANLIB} ${RANLIBFLAGS} ${.TARGET}
383
384_LIBS+= libgcc_eh.a
385
386.if ${MK_PROFILE} != "no"
387libgcc_eh_p.a:	${EH_OBJS_P}
388	@${ECHO} building profiled gcc_eh library
389	@rm -f ${.TARGET}
390	${AR} ${ARFLAGS} ${.TARGET} `lorder ${EH_OBJS_P} | tsort -q`
391	${RANLIB} ${RANLIBFLAGS} ${.TARGET}
392
393_LIBS+= libgcc_eh_p.a
394.endif
395
396_libinstall: _lib-eh-install
397
398_lib-eh-install:
399.if ${MK_INSTALLLIB} != "no"
400	${INSTALL} -C -o ${LIBOWN} -g ${LIBGRP} -m ${LIBMODE} \
401		${_INSTALLFLAGS} libgcc_eh.a ${DESTDIR}${LIBDIR}
402.endif
403.if ${MK_PROFILE} != "no"
404	${INSTALL} -C -o ${LIBOWN} -g ${LIBGRP} -m ${LIBMODE} \
405		${_INSTALLFLAGS} libgcc_eh_p.a ${DESTDIR}${LIBDIR}
406.endif
407
408CLEANFILES+=	libgcc_eh.a libgcc_eh_p.a ${EH_OBJS_T} ${EH_OBJS_P}
409
410.include <bsd.lib.mk>
411
412.SUFFIXES: .vis .vo
413