no need to set --build when configuring libffi
[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 ifeq "$(openbsd_TARGET_OS)" "1"
79 libffi_DYNAMIC_LIBS = libffi/dist-install/build/libffi.so.5.10
80 else
81 libffi_DYNAMIC_LIBS = libffi/dist-install/build/libffi.so \
82 libffi/dist-install/build/libffi.so.5
83 endif
84 endif
85
86 ifeq "$(BuildSharedLibs)" "YES"
87 libffi_EnableShared=yes
88 else
89 libffi_EnableShared=no
90 endif
91
92 ifeq "$(BuildSharedLibs)" "YES"
93 INSTALL_LIBS += $(libffi_HS_DYN_LIB)
94 ifeq "$(Windows)" "YES"
95 INSTALL_PROGS += $(libffi_HS_DYN_LIB).a
96 endif
97 endif
98
99 # We have to fake a non-working ln for configure, so that the fallback
100 # option (cp -p) gets used instead. Otherwise the libffi build system
101 # will use cygwin symbolic linkks which cannot be read by mingw gcc.
102 # The same trick is played by the GMP build in ../gmp.
103
104 ifneq "$(BINDIST)" "YES"
105 $(libffi_STAMP_CONFIGURE):
106 "$(RM)" $(RM_OPTS_REC) $(LIBFFI_DIR) libffi/build
107 cat ghc-tarballs/libffi/libffi*.tar.gz | $(GZIP_CMD) -d | { cd libffi && $(TAR_CMD) -xf - ; }
108 mv libffi/libffi-* libffi/build
109 chmod +x libffi/ln
110 # don't report nonselinux systems as selinux
111 cd libffi/build && "$(PATCH_CMD)" -p0 < ../libffi.selinux-detection-3.0.8.patch
112
113 # Because -Werror may be in SRC_CC_OPTS/SRC_LD_OPTS, we need to turn
114 # warnings off or the compilation of libffi might fail due to warnings
115 cd libffi && \
116 PATH=`pwd`:$$PATH; \
117 export PATH; \
118 cd build && \
119 CC=$(WhatGccIsCalled) \
120 LD=$(LD) \
121 AR=$(AR) \
122 NM=$(NM) \
123 CFLAGS="$(SRC_CC_OPTS) $(CONF_CC_OPTS_STAGE1) -w" \
124 LDFLAGS="$(SRC_LD_OPTS) $(CONF_GCC_LINKER_OPTS_STAGE1) -w" \
125 "$(SHELL)" configure \
126 --enable-static=yes \
127 --enable-shared=$(libffi_EnableShared) \
128 --host=$(PLATFORM)
129
130 # libffi.so needs to be built with the correct soname.
131 # NOTE: this builds libffi_convience.so with the incorrect
132 # soname, but we don't need that anyway!
133 cd libffi && \
134 "$(CP)" build/libtool build/libtool.orig; \
135 sed -e s/soname_spec=.*/soname_spec="$(libffi_HS_DYN_LIB_NAME)"/ build/libtool.orig > build/libtool
136
137 # We don't want libtool's cygwin hacks
138 cd libffi && \
139 "$(CP)" build/libtool build/libtool.orig; \
140 sed -e s/dlname=\'\$$tdlname\'/dlname=\'\$$dlname\'/ build/libtool.orig > build/libtool
141
142 touch $@
143
144 libffi/dist-install/build/ffi.h: $(libffi_STAMP_CONFIGURE) libffi/dist-install/build/ffitarget.h | $$(dir $$@)/.
145 "$(CP)" libffi/build/include/ffi.h $@
146
147 libffi/dist-install/build/ffitarget.h: $(libffi_STAMP_CONFIGURE) | $$(dir $$@)/.
148 "$(CP)" libffi/build/include/ffitarget.h $@
149
150 $(libffi_STAMP_BUILD): $(libffi_STAMP_CONFIGURE) | libffi/dist-install/build/.
151 $(MAKE) -C libffi/build MAKEFLAGS=
152 cd libffi/build && ./libtool --mode=install cp libffi.la $(TOP)/libffi/dist-install/build
153
154 # We actually want both static and dllized libraries, because we build
155 # the runtime system both ways. libffi_convenience.a is the static version.
156 ifeq "$(Windows)" "YES"
157 cp libffi/build/.libs/libffi_convenience.a $(libffi_STATIC_LIB)
158 endif
159
160 touch $@
161
162 $(libffi_STATIC_LIB): $(libffi_STAMP_BUILD)
163 @test -f $@ || { echo "$< exits, but $@ does not."; echo "Suggest removing $<."; exit 1; }
164
165 # Rename libffi.a to libHSffi.a
166 libffi/dist-install/build/libHSffi.a: $(libffi_STATIC_LIB)
167 "$(CP)" $(libffi_STATIC_LIB) libffi/dist-install/build/libHSffi.a
168
169 libffi/dist-install/build/libHSffi_p.a: $(libffi_STATIC_LIB)
170 "$(CP)" $(libffi_STATIC_LIB) libffi/dist-install/build/libHSffi_p.a
171
172 $(eval $(call all-target,libffi,$(INSTALL_HEADERS) $(INSTALL_LIBS)))
173
174 # The GHCi import lib isn't needed as compiler/ghci/Linker.lhs + rts/Linker.c
175 # link the interpreted references to FFI to the compiled FFI.
176 # Instead of adding libffi to the list preloaded packages (see
177 # compiler/ghci/Linker.lhs:emptyPLS) we generate an empty HSffi.o
178
179 libffi/dist-install/build/HSffi.o: libffi/dist-install/build/libHSffi.a
180 cd libffi/dist-install/build && \
181 touch empty.c && \
182 "$(CC)" $(SRC_CC_OPTS) $(CONF_CC_OPTS_STAGE1) -c empty.c -o HSffi.o
183
184 $(eval $(call all-target,libffi,libffi/dist-install/build/HSffi.o))
185
186 ifeq "$(BuildSharedLibs)" "YES"
187 ifeq "$(Windows)" "YES"
188 libffi/dist-install/build/libffi.dll.a $(libffi_HS_DYN_LIB): $(libffi_STAMP_BUILD)
189 @test -f $@ || { echo "$< exits, but $@ does not."; echo "Suggest removing $<."; exit 1; }
190
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 $$@)/.
196 "$(CP)" $< $@
197
198 $(eval $(call all-target,libffi,$(libffi_HS_DYN_LIB).a))
199
200 else
201 $(libffi_DYNAMIC_LIBS): $(libffi_STAMP_BUILD)
202 @test -f $@ || { echo "$< exits, but $@ does not."; echo "Suggest removing $<."; exit 1; }
203
204 # Rename libffi.so to libHSffi...so
205 $(libffi_HS_DYN_LIB): $(libffi_DYNAMIC_LIBS) | $$(dir $$@)/.
206 "$(CP)" $(word 1,$(libffi_DYNAMIC_LIBS)) $(libffi_HS_DYN_LIB)
207 ifeq "$(darwin_TARGET_OS)" "1"
208 # Ensure library's install name is correct before anyone links with it.
209 install_name_tool -id $(ghclibdir)/$(libffi_HS_DYN_LIB_NAME) $(libffi_HS_DYN_LIB)
210 endif
211
212 $(eval $(call all-target,libffi,$(libffi_HS_DYN_LIB)))
213 endif
214 endif
215
216 $(eval $(call clean-target,libffi,, \
217 libffi/build libffi/stamp.ffi.* libffi/dist-install))
218 endif
219
220 #-----------------------------------------------------------------------------
221 # Do the package config
222
223 $(eval $(call manual-package-config,libffi))
224
225 #-----------------------------------------------------------------------------
226 #
227 # binary-dist
228
229 BINDIST_EXTRAS += libffi/package.conf.in