1 # -----------------------------------------------------------------------------
3 # (c) 2009 The University of Glasgow
5 # This file is part of the GHC build system.
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
11 # -----------------------------------------------------------------------------
14 # We package libffi as Haskell package for two reasons:
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
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
33 # -----------------------------------------------------------------------------
35 # We use libffi's own configuration stuff.
37 PLATFORM := $(shell echo $(HOSTPLATFORM) | sed 's/i[567]86/i486/g')
41 # is not a valid command on non-Cygwin-systems.
42 # Let it fail silently instead of aborting the build.
46 # set -o igncr; export SHELLOPTS
47 # here as otherwise checking the size of limbs
48 # makes the build fall over on Cygwin. See the thread
49 # http://www.cygwin.com/ml/cygwin/2006-12/msg00011.html
55 # isn't sufficient to stop cygwin using symlinks the mingw gcc can't
56 # follow, as it isn't used consistently. Instead we put an ln.bat in
57 # path that always fails.
59 ifeq "$(BuildSharedLibs)" "YES"
60 libffi_STAMP_BUILD = libffi/stamp.ffi.build-shared
61 libffi_STAMP_CONFIGURE = libffi/stamp.ffi.configure-shared
63 libffi_STAMP_BUILD = libffi/stamp.ffi.build
64 libffi_STAMP_CONFIGURE = libffi/stamp.ffi.configure
67 BINDIST_STAMPS = libffi/stamp.ffi.build libfii/stamp.ffi.configure
69 INSTALL_HEADERS += libffi/ffi.h
70 libffi_STATIC_LIB = libffi/libffi.a
71 INSTALL_LIBS += libffi/libHSffi.a libffi/HSffi.o
73 # We have to add the GHC version to the name of our dynamic libs, because
74 # they will be residing in the system location along with dynamic libs from
75 # other GHC installations.
77 libffi_HS_DYN_LIB_NAME=libHSffi-ghc$(ProjectVersion)$(soext)
78 libffi_HS_DYN_LIB_PATH=libffi/$(libffi_HS_DYN_LIB_NAME)
80 ifeq "$(Windows)" "YES"
81 libffi_DYNAMIC_PROG = $(libffi_HS_DYN_LIB_PATH).a
82 libffi_DYNAMIC_LIBS = $(libffi_HS_DYN_LIB_PATH)
85 libffi_DYNAMIC_LIBS = libffi/libffi.so libffi/libffi.so.5 libffi/libffi.so.5.0.7
88 ifeq "$(BuildSharedLibs)" "YES"
89 libffi_EnableShared=yes
91 libffi_EnableShared=no
94 ifeq "$(BuildSharedLibs)" "YES"
95 INSTALL_LIBS += $(libffi_HS_DYN_LIB_PATH)
96 ifeq "$(Windows)" "YES"
97 INSTALL_PROGS += $(libffi_HS_DYN_LIB_PATH).a
101 # We have to fake a non-working ln for configure, so that the fallback
102 # option (cp -p) gets used instead. Otherwise the libffi build system
103 # will use cygwin symbolic linkks which cannot be read by mingw gcc.
104 # The same trick is played by the GMP build in ../gmp.
106 ifneq "$(BINDIST)" "YES"
107 $(libffi_STAMP_CONFIGURE):
108 $(RM) -rf $(LIBFFI_DIR) libffi/build
109 cd libffi && $(TAR) -zxf tarball/libffi*.tar.gz
110 mv libffi/libffi-* libffi/build
112 cd libffi && $(PATCH) -p0 < libffi.dllize-3.0.6.patch
114 # This patch is just the resulting delta from running automake, autoreconf, libtoolize --force --copy
115 cd libffi && $(PATCH) -p0 < libffi.autotools-update.patch
118 (set -o igncr 2>/dev/null) && set -o igncr; export SHELLOPTS; \
122 CC=$(WhatGccIsCalled) $(SHELL) configure \
123 --enable-static=yes \
124 --enable-shared=$(libffi_EnableShared) \
125 --host=$(PLATFORM) --build=$(PLATFORM)
127 # libffi.so needs to be built with the correct soname.
128 # NOTE: this builds libffi_convience.so with the incorrect
129 # soname, but we don't need that anyway!
131 $(CP) build/libtool build/libtool.orig; \
132 sed -e s/soname_spec=.*/soname_spec="$(libffi_HS_DYN_LIB_NAME)"/ build/libtool.orig > build/libtool
134 # We don't want libtool's cygwin hacks
136 $(CP) build/libtool build/libtool.orig; \
137 sed -e s/dlname=\'\$$tdlname\'/dlname=\'\$$dlname\'/ build/libtool.orig > build/libtool
141 libffi/ffi.h: $(libffi_STAMP_CONFIGURE)
142 $(CP) libffi/build/include/ffi.h $@
144 $(libffi_STAMP_BUILD): $(libffi_STAMP_CONFIGURE)
146 $(MAKE) -C build MAKEFLAGS=; \
147 (cd build; ./libtool --mode=install cp libffi.la $(TOP)/libffi)
148 $(CP) $(libffi_STATIC_LIB) libffi/libHSffi.a
149 $(CP) $(libffi_STATIC_LIB) libffi/libHSffi_p.a
152 libffi/libHSffi.a libffi/libHSffi_p.a: $(libffi_STAMP_BUILD)
154 all_libffi : libffi/libHSffi.a libffi/libHSffi_p.a
156 # The GHCi import lib isn't needed as compiler/ghci/Linker.lhs + rts/Linker.c
157 # link the interpreted references to FFI to the compiled FFI.
158 # Instead of adding libffi to the list preloaded packages (see
159 # compiler/ghci/Linker.lhs:emptyPLS) we generate an empty HSffi.o
161 libffi/HSffi.o: libffi/libHSffi.a
164 $(CC) -c empty.c -o HSffi.o
166 all_libffi : libffi/HSffi.o
168 ifeq "$(BuildSharedLibs)" "YES"
169 ifeq "$(Windows)" "YES"
170 # Windows libtool creates <soname>.dll, and as we already patched that
171 # there is no need to copy from libffi.dll to libHSffi...dll.
172 # However, the renaming is still required for the import library
174 $(libffi_HS_DYN_LIB_PATH).a: $(libffi_STAMP_BUILD)
175 $(CP) libffi/libffi.dll.a $(libffi_HS_DYN_LIB_PATH).a
176 all_libffi : $(libffi_HS_DYN_LIB_PATH).a
179 # Rename libffi.so to libHSffi...so
180 $(libffi_HS_DYN_LIB_PATH): $(libffi_DYNAMIC_LIBS)
181 $(CP) $(word 1,$(libffi_DYNAMIC_LIBS)) $(libffi_HS_DYN_LIB_PATH)
183 all_libffi : $(libffi_HS_DYN_LIB_PATH)
187 $(eval $(call clean-target,libffi,, \
188 libffi/build libffi/stamp.ffi.* libffi/ffi.h libffi/empty.c \
189 libffi/libffi.a libffi/libffi.la \
190 libffi/HSffi.o libffi/libHSffi.a libffi/libHSffi_p.a \
191 $(libffi_DYNAMIC_PROG) $(libffi_DYNAMIC_LIBS) \
192 $(libffi_HS_DYN_LIB_NAME) $(libffi_HS_DYN_LIB_NAME).a))
195 #-----------------------------------------------------------------------------
196 # Do the package config
198 $(eval $(call manual-package-config,libffi))
200 #-----------------------------------------------------------------------------
204 BINDIST_EXTRAS += libffi/package.conf.in