-
-TOP=..
-DONT_WANT_STD_GHCI_LIB_RULE=YES
-DONT_WANT_STD_LIBRARY=YES
-
-include $(TOP)/mk/boilerplate.mk
-
-# We package libffi as Haskell package for two reasons:
-
-# 1) GHC uses different names for shared and static libs, so it can
-# choose the lib variant to link with on its own. With regular
-# libtool styled shared lib names, the linker would interfer and
-# link against the shared lib variant even when GHC runs in -static
-# mode.
-# 2) The first issue isn't a problem when a shared lib of libffi would
-# be installed in system locations, but we do not assume that. So,
-# when running in -dynamic mode, we must either install libffi to
-# system locations ourselves, or we must add its location to
-# respective environment variable, (DY)LD_LIBRARY_PATH etc...before
-# we call dynamically linked binaries. Especially, the latter is
-# necessary as GHC calls binary it produced before its installation
-# phase. However, both mechanism, installing to system locations or
-# modifying (DY)LD_LIBRARY_PATH, are already in place for Haskell
-# packages so with packaging libffi as Haskell package we reuse
-# them naturally.
-
-PACKAGE=ffi
# -----------------------------------------------------------------------------
#
-# We use libffi's own configuration stuff.
-
-PLATFORM := $(shell echo $(HOSTPLATFORM) | sed 's/i[567]86/i486/g')
-
-# 2007-09-26
-# set -o igncr
-# is not a valid command on non-Cygwin-systems.
-# Let it fail silently instead of aborting the build.
+# (c) 2009 The University of Glasgow
#
-# 2007-07-05
-# We do
-# set -o igncr; export SHELLOPTS
-# here as otherwise checking the size of limbs
-# makes the build fall over on Cygwin. See the thread
-# http://www.cygwin.com/ml/cygwin/2006-12/msg00011.html
-# for more details.
-
-# 2007-07-05
-# Passing
-# as_ln_s='cp -p'
-# isn't sufficient to stop cygwin using symlinks the mingw gcc can't
-# follow, as it isn't used consistently. Instead we put an ln.bat in
-# path that always fails.
-
-LIBFFI_TARBALL := $(firstword $(wildcard libffi*.tar.gz))
-LIBFFI_DIR := $(subst .tar.gz,,$(LIBFFI_TARBALL))
-
-BINDIST_STAMPS = stamp.ffi
-INSTALL_HEADERS += ffi.h
-STATIC_LIB = libffi.a
-INSTALL_LIBS += $(STATIC_LIB)
-
-# We have to add the GHC version to the name of our dynamic libs, because
-# they will be residing in the system location along with dynamic libs from
-# other GHC installations.
-ifeq "$(Windows)" "YES"
-DYNAMIC_PROG = libffi.dll.a
-DYNAMIC_LIBS = libffi-3.dll
-RENAME_LIBS =
-else
-DYNAMIC_PROG =
-DYNAMIC_LIBS = libffi.so libffi.so.5 libffi.so.5.0.5
-endif
-
-HS_DYN_LIB_NAME=libHSffi-ghc$(ProjectVersion)$(soext)
-
-ifeq "$(BuildSharedLibs)" "YES"
-EnableShared=yes
-else
-EnableShared=no
-endif
-
-ifeq "$(BuildSharedLibs)" "YES"
-INSTALL_LIBS += $(DYNAMIC_LIBS)
-INSTALL_PROGS += $(DYNAMIC_PROGS)
-endif
-
-install all :: $(INSTALL_HEADERS) $(INSTALL_LIBS) $(INSTALL_PROGS)
-
-# We have to fake a non-working ln for configure, so that the fallback
-# option (cp -p) gets used instead. Otherwise the libffi build system
-# will use cygwin symbolic linkks which cannot be read by mingw gcc.
-# The same trick is played by the GMP build in ../gmp.
-
-stamp.ffi.configure:
- $(RM) -rf $(LIBFFI_DIR) build
- $(TAR) -zxf $(LIBFFI_TARBALL)
- mv $(LIBFFI_DIR) build
- chmod +x ln
- (set -o igncr 2>/dev/null) && set -o igncr; export SHELLOPTS; \
- PATH=`pwd`:$$PATH; \
- export PATH; \
- cd build && \
- CC=$(WhatGccIsCalled) $(SHELL) configure \
- --enable-static=yes \
- --enable-shared=$(EnableShared) \
- --host=$(PLATFORM) --build=$(PLATFORM)
-
- # libffi.so needs to be built with the correct soname.
- # NOTE: this builds libffi_convience.so with the incorrect
- # soname, but we don't need that anyway!
- sed -i -e s/soname_spec=.*/soname_spec="$(HS_DYN_LIB_NAME)"/ build/libtool
- touch $@
-
-ffi.h: stamp.ffi.configure
- $(CP) build/include/ffi.h .
-
-stamp.ffi.build: stamp.ffi.configure
- $(MAKE) -C build MAKEFLAGS=
- (cd build; ./libtool --mode=install cp libffi.la $(FPTOOLS_TOP_ABS)/libffi)
- touch $@
-
-$(STATIC_LIB) $(DYNAMIC_LIBS) $(DYNAMIC_PROG): stamp.ffi.build
-
-libHSffi.a libHSffi_p.a: $(STATIC_LIB)
- cp $(STATIC_LIB) $@
-
-all :: libHSffi.a libHSffi_p.a
-
-# The GHCi import lib isn't needed as compiler/ghci/Linker.lhs + rts/Linker.c
-# link the interpreted references to FFI to the compiled FFI.
-# Instead of adding libffi to the list preloaded packages (see
-# compiler/ghci/Linker.lhs:emptyPLS) we generate an empty HSffi.o
-
-HSffi.o: libHSffi.a
- ld -r -o HSffi.o /dev/null # this is intentional
-# $(RM) -fr unpack
-# (mkdir unpack; cd unpack; ar x ../libHSffi.a; ld -r -o ../HSffi.o *.o)
-# $(RM) -fr unpack
-
-all :: HSffi.o
-
-ifeq "$(BuildSharedLibs)" "YES"
-$(HS_DYN_LIB_NAME): $(DYNAMIC_LIBS)
- cp $(word 1,$(DYNAMIC_LIBS)) $(HS_DYN_LIB_NAME)
-
-all :: $(HS_DYN_LIB_NAME)
-endif
-
-clean distclean maintainer-clean ::
- $(RM) -f stamp.ffi.configure stamp.ffi.build ffi.h
- $(RM) -f libffi.a libffi.la $(DYNAMIC_PROG) $(DYNAMIC_LIBS) $(ORIG_DYNAMIC_LIBS)
- $(RM) -rf build
-
-#-----------------------------------------------------------------------------
+# This file is part of the GHC build system.
#
-# binary-dist
-
-include $(TOP)/mk/target.mk
-
-BINDIST_EXTRAS += $(BINDIST_STAMPS)
-BINDIST_EXTRAS += $(INSTALL_PROGS)
-BINDIST_EXTRAS += $(INSTALL_LIBS)
-BINDIST_EXTRAS += $(INSTALL_HEADERS)
-include $(TOP)/mk/bindist.mk
+# To understand how the build system works and how to modify it, see
+# http://hackage.haskell.org/trac/ghc/wiki/Building/Architecture
+# http://hackage.haskell.org/trac/ghc/wiki/Building/Modifying
+#
+# -----------------------------------------------------------------------------
+dir = libffi
+TOP = ..
+include $(TOP)/mk/sub-makefile.mk
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