The libffi patches are no longer needed
[ghc.git] / libffi / ghc.mk
1 # -----------------------------------------------------------------------------
2 #
3 # (c) 2009 The University of Glasgow
4 #
5 # This file is part of the GHC build system.
6 #
7 # To understand how the build system works and how to modify it, see
8 # http://hackage.haskell.org/trac/ghc/wiki/Building/Architecture
9 # http://hackage.haskell.org/trac/ghc/wiki/Building/Modifying
10 #
11 # -----------------------------------------------------------------------------
12
13
14 # We package libffi as Haskell package for two reasons:
15
16 # 1) GHC uses different names for shared and static libs, so it can
17 # choose the lib variant to link with on its own. With regular
18 # libtool styled shared lib names, the linker would interfer and
19 # link against the shared lib variant even when GHC runs in -static
20 # mode.
21 # 2) The first issue isn't a problem when a shared lib of libffi would
22 # be installed in system locations, but we do not assume that. So,
23 # when running in -dynamic mode, we must either install libffi to
24 # system locations ourselves, or we must add its location to
25 # respective environment variable, (DY)LD_LIBRARY_PATH etc...before
26 # we call dynamically linked binaries. Especially, the latter is
27 # necessary as GHC calls binary it produced before its installation
28 # phase. However, both mechanism, installing to system locations or
29 # modifying (DY)LD_LIBRARY_PATH, are already in place for Haskell
30 # packages so with packaging libffi as Haskell package we reuse
31 # them naturally.
32
33 # -----------------------------------------------------------------------------
34 #
35 # We use libffi's own configuration stuff.
36
37 PLATFORM := $(shell echo $(HOSTPLATFORM) | sed 's/i[567]86/i486/g')
38
39 # 2007-09-26
40 # set -o igncr
41 # is not a valid command on non-Cygwin-systems.
42 # Let it fail silently instead of aborting the build.
43 #
44 # 2007-07-05
45 # We do
46 # set -o igncr; export SHELLOPTS
47 # here as otherwise checking the size of limbs
48 # makes the build fall over on Cygwin. See the thread
49 # http://www.cygwin.com/ml/cygwin/2006-12/msg00011.html
50 # for more details.
51
52 # 2007-07-05
53 # Passing
54 # as_ln_s='cp -p'
55 # isn't sufficient to stop cygwin using symlinks the mingw gcc can't
56 # follow, as it isn't used consistently. Instead we put an ln.bat in
57 # path that always fails.
58
59 ifeq "$(BuildSharedLibs)" "YES"
60 libffi_STAMP_CONFIGURE = libffi/stamp.ffi.configure-shared
61 libffi_STAMP_BUILD = libffi/stamp.ffi.build-shared
62 else
63 libffi_STAMP_CONFIGURE = libffi/stamp.ffi.configure
64 libffi_STAMP_BUILD = libffi/stamp.ffi.build
65 endif
66
67 BINDIST_STAMPS = libffi/stamp.ffi.build libfii/stamp.ffi.configure
68
69 INSTALL_HEADERS += libffi/dist-install/build/ffi.h \
70 libffi/dist-install/build/ffitarget.h
71 libffi_STATIC_LIB = libffi/dist-install/build/libffi.a
72 INSTALL_LIBS += libffi/dist-install/build/libHSffi.a \
73 libffi/dist-install/build/libHSffi_p.a \
74 libffi/dist-install/build/HSffi.o
75
76 # We have to add the GHC version to the name of our dynamic libs, because
77 # they will be residing in the system location along with dynamic libs from
78 # other GHC installations.
79
80 libffi_HS_DYN_LIB_NAME = libHSffi$(dyn_libsuf)
81 libffi_HS_DYN_LIB = libffi/dist-install/build/$(libffi_HS_DYN_LIB_NAME)
82
83 ifeq "$(Windows)" "YES"
84 libffi_DYNAMIC_PROG = $(libffi_HS_DYN_LIB).a
85 libffi_DYNAMIC_LIBS = $(libffi_HS_DYN_LIB)
86 else
87 libffi_DYNAMIC_PROG =
88 ifeq "$(darwin_TARGET_OS)" "1"
89 libffi_DYNAMIC_LIBS = libffi/dist-install/build/libffi$(soext) libffi/dist-install/build/libffi.5$(soext) libffi/dist-install/build/libffi.5.0.9$(soext)
90 else
91 libffi_DYNAMIC_LIBS = libffi/dist-install/build/libffi.so \
92 libffi/dist-install/build/libffi.so.5
93 endif
94 endif
95
96 ifeq "$(BuildSharedLibs)" "YES"
97 libffi_EnableShared=yes
98 else
99 libffi_EnableShared=no
100 endif
101
102 ifeq "$(BuildSharedLibs)" "YES"
103 INSTALL_LIBS += $(libffi_HS_DYN_LIB)
104 ifeq "$(Windows)" "YES"
105 INSTALL_PROGS += $(libffi_HS_DYN_LIB).a
106 endif
107 endif
108
109 # We have to fake a non-working ln for configure, so that the fallback
110 # option (cp -p) gets used instead. Otherwise the libffi build system
111 # will use cygwin symbolic linkks which cannot be read by mingw gcc.
112 # The same trick is played by the GMP build in ../gmp.
113
114 ifneq "$(BINDIST)" "YES"
115 $(libffi_STAMP_CONFIGURE):
116 "$(RM)" $(RM_OPTS) -r $(LIBFFI_DIR) libffi/build
117 cat ghc-tarballs/libffi/libffi*.tar.gz | $(GZIP) -d | { cd libffi && $(TAR) -xf - ; }
118 mv libffi/libffi-* libffi/build
119 chmod +x libffi/ln
120
121 # Because -Werror may be in SRC_CC_OPTS/SRC_LD_OPTS, we need to turn
122 # warnings off or the compilation of libffi might fail due to warnings
123 cd libffi && \
124 (set -o igncr 2>/dev/null) && set -o igncr; export SHELLOPTS; \
125 PATH=`pwd`:$$PATH; \
126 export PATH; \
127 cd build && \
128 CC=$(WhatGccIsCalled) \
129 CFLAGS="$(SRC_CC_OPTS) $(CONF_CC_OPTS) -w" \
130 LDFLAGS="$(SRC_LD_OPTS) $(CONF_LD_OPTS) -w" \
131 "$(SHELL)" configure \
132 --enable-static=yes \
133 --enable-shared=$(libffi_EnableShared) \
134 --host=$(PLATFORM) --build=$(PLATFORM)
135
136 # libffi.so needs to be built with the correct soname.
137 # NOTE: this builds libffi_convience.so with the incorrect
138 # soname, but we don't need that anyway!
139 cd libffi && \
140 "$(CP)" build/libtool build/libtool.orig; \
141 sed -e s/soname_spec=.*/soname_spec="$(libffi_HS_DYN_LIB_NAME)"/ build/libtool.orig > build/libtool
142
143 # We don't want libtool's cygwin hacks
144 cd libffi && \
145 "$(CP)" build/libtool build/libtool.orig; \
146 sed -e s/dlname=\'\$$tdlname\'/dlname=\'\$$dlname\'/ build/libtool.orig > build/libtool
147
148 touch $@
149
150 libffi/dist-install/build/ffi.h: $(libffi_STAMP_CONFIGURE) | $$(dir $$@)/.
151 "$(CP)" libffi/build/include/ffi.h $@
152
153 libffi/dist-install/build/ffitarget.h: $(libffi_STAMP_CONFIGURE) | $$(dir $$@)/.
154 "$(CP)" libffi/build/include/ffitarget.h $@
155
156 $(libffi_STAMP_BUILD): $(libffi_STAMP_CONFIGURE) | libffi/dist-install/build/.
157 $(MAKE) -C libffi/build MAKEFLAGS=
158 cd libffi/build && ./libtool --mode=install cp libffi.la $(TOP)/libffi/dist-install/build
159
160 # We actually want both static and dllized libraries, because we build
161 # the runtime system both ways. libffi_convenience.a is the static version.
162 ifeq "$(Windows)" "YES"
163 cp libffi/build/.libs/libffi_convenience.a $(libffi_STATIC_LIB)
164 endif
165
166 touch $@
167
168 $(libffi_STATIC_LIB): $(libffi_STAMP_BUILD)
169 # Rename libffi.a to libHSffi.a
170 libffi/dist-install/build/libHSffi.a libffi/dist-install/build/libHSffi_p.a: $(libffi_STATIC_LIB)
171 "$(CP)" $(libffi_STATIC_LIB) libffi/dist-install/build/libHSffi.a
172 "$(CP)" $(libffi_STATIC_LIB) libffi/dist-install/build/libHSffi_p.a
173
174 $(eval $(call all-target,libffi,$(INSTALL_HEADERS) $(INSTALL_LIBS)))
175
176 # The GHCi import lib isn't needed as compiler/ghci/Linker.lhs + rts/Linker.c
177 # link the interpreted references to FFI to the compiled FFI.
178 # Instead of adding libffi to the list preloaded packages (see
179 # compiler/ghci/Linker.lhs:emptyPLS) we generate an empty HSffi.o
180
181 libffi/dist-install/build/HSffi.o: libffi/dist-install/build/libHSffi.a
182 cd libffi/dist-install/build && \
183 touch empty.c && \
184 "$(CC)" $(SRC_CC_OPTS) $(CONF_CC_OPTS) -c empty.c -o HSffi.o
185
186 $(eval $(call all-target,libffi,libffi/dist-install/build/HSffi.o))
187
188 ifeq "$(BuildSharedLibs)" "YES"
189 ifeq "$(Windows)" "YES"
190 libffi/libffi.dll.a $(libffi_HS_DYN_LIB): $(libffi_STAMP_BUILD)
191 # Windows libtool creates <soname>.dll, and as we already patched that
192 # there is no need to copy from libffi.dll to libHSffi...dll.
193 # However, the renaming is still required for the import library
194 # libffi.dll.a.
195 $(libffi_HS_DYN_LIB).a: libffi/dist-install/build/libffi.dll.a | $$(dir $$@)/.
196 "$(CP)" $< $@
197
198 $(eval $(call all-target,libffi,$(libffi_HS_DYN_LIB).a))
199
200 else
201 $(libffi_DYNAMIC_LIBS): $(libffi_STAMP_BUILD)
202 # Rename libffi.so to libHSffi...so
203 $(libffi_HS_DYN_LIB): $(libffi_DYNAMIC_LIBS) | $$(dir $$@)/.
204 "$(CP)" $(word 1,$(libffi_DYNAMIC_LIBS)) $(libffi_HS_DYN_LIB)
205 ifeq "$(darwin_TARGET_OS)" "1"
206 # Ensure library's install name is correct before anyone links with it.
207 install_name_tool -id $(ghclibdir)/$(libffi_HS_DYN_LIB_NAME) $(libffi_HS_DYN_LIB)
208 endif
209
210 $(eval $(call all-target,libffi,$(libffi_HS_DYN_LIB)))
211 endif
212 endif
213
214 $(eval $(call clean-target,libffi,, \
215 libffi/build libffi/stamp.ffi.* libffi/dist-install))
216 endif
217
218 #-----------------------------------------------------------------------------
219 # Do the package config
220
221 $(eval $(call manual-package-config,libffi))
222
223 #-----------------------------------------------------------------------------
224 #
225 # binary-dist
226
227 BINDIST_EXTRAS += libffi/package.conf.in
228