d8a3d27a5e0ab81544b843f8a19f9af98e5bdbe6
[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 $(HOSTPLATFORM) | sed 's/i[567]86/i486/g')
38
39 # 2007-07-05
40 # Passing
41 # as_ln_s='cp -p'
42 # isn't sufficient to stop cygwin using symlinks the mingw gcc can't
43 # follow, as it isn't used consistently. Instead we put an ln.bat in
44 # path that always fails.
45
46 ifeq "$(BuildSharedLibs)" "YES"
47 libffi_STAMP_CONFIGURE = libffi/stamp.ffi.configure-shared
48 libffi_STAMP_BUILD = libffi/stamp.ffi.build-shared
49 else
50 libffi_STAMP_CONFIGURE = libffi/stamp.ffi.configure
51 libffi_STAMP_BUILD = libffi/stamp.ffi.build
52 endif
53
54 BINDIST_STAMPS = libffi/stamp.ffi.build libfii/stamp.ffi.configure
55
56 INSTALL_HEADERS += libffi/dist-install/build/ffi.h \
57 libffi/dist-install/build/ffitarget.h
58 libffi_STATIC_LIB = libffi/dist-install/build/libffi.a
59 INSTALL_LIBS += libffi/dist-install/build/libHSffi.a \
60 libffi/dist-install/build/libHSffi_p.a \
61 libffi/dist-install/build/HSffi.o
62
63 # We have to add the GHC version to the name of our dynamic libs, because
64 # they will be residing in the system location along with dynamic libs from
65 # other GHC installations.
66
67 libffi_HS_DYN_LIB_NAME = libHSffi$(dyn_libsuf)
68 libffi_HS_DYN_LIB = libffi/dist-install/build/$(libffi_HS_DYN_LIB_NAME)
69
70 ifeq "$(Windows)" "YES"
71 libffi_DYNAMIC_PROG = $(libffi_HS_DYN_LIB).a
72 libffi_DYNAMIC_LIBS = $(libffi_HS_DYN_LIB)
73 else
74 libffi_DYNAMIC_PROG =
75 ifeq "$(darwin_TARGET_OS)" "1"
76 libffi_DYNAMIC_LIBS = libffi/dist-install/build/libffi$(soext) \
77 libffi/dist-install/build/libffi.5$(soext)
78 else
79 libffi_DYNAMIC_LIBS = libffi/dist-install/build/libffi.so \
80 libffi/dist-install/build/libffi.so.5
81 endif
82 endif
83
84 ifeq "$(BuildSharedLibs)" "YES"
85 libffi_EnableShared=yes
86 else
87 libffi_EnableShared=no
88 endif
89
90 ifeq "$(BuildSharedLibs)" "YES"
91 INSTALL_LIBS += $(libffi_HS_DYN_LIB)
92 ifeq "$(Windows)" "YES"
93 INSTALL_PROGS += $(libffi_HS_DYN_LIB).a
94 endif
95 endif
96
97 # We have to fake a non-working ln for configure, so that the fallback
98 # option (cp -p) gets used instead. Otherwise the libffi build system
99 # will use cygwin symbolic linkks which cannot be read by mingw gcc.
100 # The same trick is played by the GMP build in ../gmp.
101
102 ifneq "$(BINDIST)" "YES"
103 $(libffi_STAMP_CONFIGURE):
104 "$(RM)" $(RM_OPTS_REC) $(LIBFFI_DIR) libffi/build
105 cat ghc-tarballs/libffi/libffi*.tar.gz | $(GZIP_CMD) -d | { cd libffi && $(TAR_CMD) -xf - ; }
106 mv libffi/libffi-* libffi/build
107 chmod +x libffi/ln
108
109 # Because -Werror may be in SRC_CC_OPTS/SRC_LD_OPTS, we need to turn
110 # warnings off or the compilation of libffi might fail due to warnings
111 cd libffi && \
112 PATH=`pwd`:$$PATH; \
113 export PATH; \
114 cd build && \
115 CC=$(WhatGccIsCalled) \
116 LD=$(LD) \
117 AR=$(AR) \
118 NM=$(NM) \
119 CFLAGS="$(SRC_CC_OPTS) $(CONF_CC_OPTS_STAGE1) -w" \
120 LDFLAGS="$(SRC_LD_OPTS) $(CONF_LD_OPTS_STAGE1) -w" \
121 "$(SHELL)" configure \
122 --enable-static=yes \
123 --enable-shared=$(libffi_EnableShared) \
124 --host=$(PLATFORM) --build=$(PLATFORM)
125
126 # libffi.so needs to be built with the correct soname.
127 # NOTE: this builds libffi_convience.so with the incorrect
128 # soname, but we don't need that anyway!
129 cd libffi && \
130 "$(CP)" build/libtool build/libtool.orig; \
131 sed -e s/soname_spec=.*/soname_spec="$(libffi_HS_DYN_LIB_NAME)"/ build/libtool.orig > build/libtool
132
133 # We don't want libtool's cygwin hacks
134 cd libffi && \
135 "$(CP)" build/libtool build/libtool.orig; \
136 sed -e s/dlname=\'\$$tdlname\'/dlname=\'\$$dlname\'/ build/libtool.orig > build/libtool
137
138 touch $@
139
140 libffi/dist-install/build/ffi.h: $(libffi_STAMP_CONFIGURE) | $$(dir $$@)/.
141 "$(CP)" libffi/build/include/ffi.h $@
142
143 libffi/dist-install/build/ffitarget.h: $(libffi_STAMP_CONFIGURE) | $$(dir $$@)/.
144 "$(CP)" libffi/build/include/ffitarget.h $@
145
146 $(libffi_STAMP_BUILD): $(libffi_STAMP_CONFIGURE) | libffi/dist-install/build/.
147 $(MAKE) -C libffi/build MAKEFLAGS=
148 cd libffi/build && ./libtool --mode=install cp libffi.la $(TOP)/libffi/dist-install/build
149
150 # We actually want both static and dllized libraries, because we build
151 # the runtime system both ways. libffi_convenience.a is the static version.
152 ifeq "$(Windows)" "YES"
153 cp libffi/build/.libs/libffi_convenience.a $(libffi_STATIC_LIB)
154 endif
155
156 touch $@
157
158 $(libffi_STATIC_LIB): $(libffi_STAMP_BUILD)
159 @test -f $@
160
161 # Rename libffi.a to libHSffi.a
162 libffi/dist-install/build/libHSffi.a libffi/dist-install/build/libHSffi_p.a: $(libffi_STATIC_LIB)
163 "$(CP)" $(libffi_STATIC_LIB) libffi/dist-install/build/libHSffi.a
164 "$(CP)" $(libffi_STATIC_LIB) libffi/dist-install/build/libHSffi_p.a
165
166 $(eval $(call all-target,libffi,$(INSTALL_HEADERS) $(INSTALL_LIBS)))
167
168 # The GHCi import lib isn't needed as compiler/ghci/Linker.lhs + rts/Linker.c
169 # link the interpreted references to FFI to the compiled FFI.
170 # Instead of adding libffi to the list preloaded packages (see
171 # compiler/ghci/Linker.lhs:emptyPLS) we generate an empty HSffi.o
172
173 libffi/dist-install/build/HSffi.o: libffi/dist-install/build/libHSffi.a
174 cd libffi/dist-install/build && \
175 touch empty.c && \
176 "$(CC)" $(SRC_CC_OPTS) $(CONF_CC_OPTS_STAGE1) -c empty.c -o HSffi.o
177
178 $(eval $(call all-target,libffi,libffi/dist-install/build/HSffi.o))
179
180 ifeq "$(BuildSharedLibs)" "YES"
181 ifeq "$(Windows)" "YES"
182 libffi/libffi.dll.a $(libffi_HS_DYN_LIB): $(libffi_STAMP_BUILD)
183 @test -f $@
184
185 # Windows libtool creates <soname>.dll, and as we already patched that
186 # there is no need to copy from libffi.dll to libHSffi...dll.
187 # However, the renaming is still required for the import library
188 # libffi.dll.a.
189 $(libffi_HS_DYN_LIB).a: libffi/dist-install/build/libffi.dll.a | $$(dir $$@)/.
190 "$(CP)" $< $@
191
192 $(eval $(call all-target,libffi,$(libffi_HS_DYN_LIB).a))
193
194 else
195 $(libffi_DYNAMIC_LIBS): $(libffi_STAMP_BUILD)
196 @test -f $@
197
198 # Rename libffi.so to libHSffi...so
199 $(libffi_HS_DYN_LIB): $(libffi_DYNAMIC_LIBS) | $$(dir $$@)/.
200 "$(CP)" $(word 1,$(libffi_DYNAMIC_LIBS)) $(libffi_HS_DYN_LIB)
201 ifeq "$(darwin_TARGET_OS)" "1"
202 # Ensure library's install name is correct before anyone links with it.
203 install_name_tool -id $(ghclibdir)/$(libffi_HS_DYN_LIB_NAME) $(libffi_HS_DYN_LIB)
204 endif
205
206 $(eval $(call all-target,libffi,$(libffi_HS_DYN_LIB)))
207 endif
208 endif
209
210 $(eval $(call clean-target,libffi,, \
211 libffi/build libffi/stamp.ffi.* libffi/dist-install))
212 endif
213
214 #-----------------------------------------------------------------------------
215 # Do the package config
216
217 $(eval $(call manual-package-config,libffi))
218
219 #-----------------------------------------------------------------------------
220 #
221 # binary-dist
222
223 BINDIST_EXTRAS += libffi/package.conf.in
224