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# -----------------------------------------------------------------------------
#
# (c) 2009 The University of Glasgow
#
# This file is part of the GHC build system.
#
# 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
#
# -----------------------------------------------------------------------------
# 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.
# -----------------------------------------------------------------------------
#
# We use libffi's own configuration stuff.
PLATFORM := $(shell echo $(HOSTPLATFORM) | sed 's/i[567]86/i486/g')
# 2007-09-26
# set -o igncr
# is not a valid command on non-Cygwin-systems.
# Let it fail silently instead of aborting the build.
#
# 2007-07-05
# We do
# set -o igncr; export SHELLOPTS
# here as otherwise checking the size of limbs
# makes the build fall over on Cygwin. See the thread
# http://www.cygwin.com/ml/cygwin/2006-12/msg00011.html
# for more details.
# 2007-07-05
# Passing
# as_ln_s='cp -p'
# isn't sufficient to stop cygwin using symlinks the mingw gcc can't
# follow, as it isn't used consistently. Instead we put an ln.bat in
# path that always fails.
ifeq "$(BuildSharedLibs)" "YES"
libffi_STAMP_CONFIGURE = libffi/stamp.ffi.configure-shared
libffi_STAMP_BUILD = libffi/stamp.ffi.build-shared
else
libffi_STAMP_CONFIGURE = libffi/stamp.ffi.configure
libffi_STAMP_BUILD = libffi/stamp.ffi.build
endif
BINDIST_STAMPS = libffi/stamp.ffi.build libfii/stamp.ffi.configure
INSTALL_HEADERS += libffi/ffi.h
libffi_STATIC_LIB = libffi/libffi.a
INSTALL_LIBS += libffi/libHSffi.a libffi/HSffi.o
# 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.
libffi_HS_DYN_LIB_NAME = libHSffi$(dyn_libsuf)
libffi_HS_DYN_LIB = libffi/$(libffi_HS_DYN_LIB_NAME)
ifeq "$(Windows)" "YES"
libffi_DYNAMIC_PROG = $(libffi_HS_DYN_LIB).a
libffi_DYNAMIC_LIBS = $(libffi_HS_DYN_LIB)
else
libffi_DYNAMIC_PROG =
libffi_DYNAMIC_LIBS = libffi/libffi.so libffi/libffi.so.5 libffi/libffi.so.5.0.9
endif
ifeq "$(BuildSharedLibs)" "YES"
libffi_EnableShared=yes
else
libffi_EnableShared=no
endif
ifeq "$(BuildSharedLibs)" "YES"
INSTALL_LIBS += $(libffi_HS_DYN_LIB)
ifeq "$(Windows)" "YES"
INSTALL_PROGS += $(libffi_HS_DYN_LIB).a
endif
endif
# We have to fake a non-working ln for configure, so that the fallback
# option (cp -p) gets used instead. Otherwise the libffi build system
# will use cygwin symbolic linkks which cannot be read by mingw gcc.
# The same trick is played by the GMP build in ../gmp.
ifneq "$(BINDIST)" "YES"
$(libffi_STAMP_CONFIGURE):
"$(RM)" $(RM_OPTS) -r $(LIBFFI_DIR) libffi/build
cd libffi && $(TAR) -zxf tarball/libffi*.tar.gz
mv libffi/libffi-* libffi/build
chmod +x libffi/ln
cd libffi/build && "$(PATCH)" -p1 < ../libffi.dllize-3.0.8.patch
# This patch is just the resulting delta from running
# automake && autoreconf && libtoolize --force --copy
cd libffi/build && "$(PATCH)" -p1 < ../libffi.autotools-update-3.0.8.patch
# Because -Werror may be in SRC_CC_OPTS/SRC_LD_OPTS, we need to turn
# warnings off or the compilation of libffi might fail due to warnings
cd libffi && \
(set -o igncr 2>/dev/null) && set -o igncr; export SHELLOPTS; \
PATH=`pwd`:$$PATH; \
export PATH; \
cd build && \
CC=$(WhatGccIsCalled) \
CFLAGS="$(SRC_CC_OPTS) $(CONF_CC_OPTS) -w" \
LDFLAGS="$(SRC_LD_OPTS) $(CONF_LD_OPTS) -w" \
"$(SHELL)" configure \
--enable-static=yes \
--enable-shared=$(libffi_EnableShared) \
--host=$(PLATFORM) --build=$(PLATFORM)
# libffi.so needs to be built with the correct soname.
# NOTE: this builds libffi_convience.so with the incorrect
# soname, but we don't need that anyway!
cd libffi && \
"$(CP)" build/libtool build/libtool.orig; \
sed -e s/soname_spec=.*/soname_spec="$(libffi_HS_DYN_LIB_NAME)"/ build/libtool.orig > build/libtool
# We don't want libtool's cygwin hacks
cd libffi && \
"$(CP)" build/libtool build/libtool.orig; \
sed -e s/dlname=\'\$$tdlname\'/dlname=\'\$$dlname\'/ build/libtool.orig > build/libtool
touch $@
libffi/ffi.h: $(libffi_STAMP_CONFIGURE)
"$(CP)" libffi/build/include/ffi.h $@
$(libffi_STAMP_BUILD): $(libffi_STAMP_CONFIGURE)
cd libffi && \
$(MAKE) -C build MAKEFLAGS=; \
(cd build; ./libtool --mode=install cp libffi.la $(TOP)/libffi)
touch $@
$(libffi_STATIC_LIB): $(libffi_STAMP_BUILD)
# Rename libffi.a to libHSffi.a
libffi/libHSffi.a libffi/libHSffi_p.a: $(libffi_STATIC_LIB)
"$(CP)" $(libffi_STATIC_LIB) libffi/libHSffi.a
"$(CP)" $(libffi_STATIC_LIB) libffi/libHSffi_p.a
$(eval $(call all-target,libffi,libffi/libHSffi.a libffi/libHSffi_p.a))
# The GHCi import lib isn't needed as compiler/ghci/Linker.lhs + rts/Linker.c
# link the interpreted references to FFI to the compiled FFI.
# Instead of adding libffi to the list preloaded packages (see
# compiler/ghci/Linker.lhs:emptyPLS) we generate an empty HSffi.o
libffi/HSffi.o: libffi/libHSffi.a
cd libffi && \
touch empty.c; \
"$(CC)" $(SRC_CC_OPTS) $(CONF_CC_OPTS) -c empty.c -o HSffi.o
$(eval $(call all-target,libffi,libffi/HSffi.o))
ifeq "$(BuildSharedLibs)" "YES"
ifeq "$(Windows)" "YES"
libffi/libffi.dll.a $(libffi_HS_DYN_LIB): $(libffi_STAMP_BUILD)
# Windows libtool creates <soname>.dll, and as we already patched that
# there is no need to copy from libffi.dll to libHSffi...dll.
# However, the renaming is still required for the import library
# libffi.dll.a.
$(libffi_HS_DYN_LIB).a: libffi/libffi.dll.a
"$(CP)" libffi/libffi.dll.a $(libffi_HS_DYN_LIB).a
$(eval $(call all-target,libffi,$(libffi_HS_DYN_LIB).a))
else
$(libffi_DYNAMIC_LIBS): $(libffi_STAMP_BUILD)
# Rename libffi.so to libHSffi...so
$(libffi_HS_DYN_LIB): $(libffi_DYNAMIC_LIBS)
"$(CP)" $(word 1,$(libffi_DYNAMIC_LIBS)) $(libffi_HS_DYN_LIB)
$(eval $(call all-target,libffi,$(libffi_HS_DYN_LIB)))
endif
endif
$(eval $(call clean-target,libffi,, \
libffi/build libffi/stamp.ffi.* libffi/ffi.h libffi/empty.c \
libffi/libffi.a libffi/libffi.la \
libffi/HSffi.o libffi/libHSffi.a libffi/libHSffi_p.a \
$(libffi_DYNAMIC_PROG) $(libffi_DYNAMIC_LIBS) \
$(libffi_HS_DYN_LIB) $(libffi_HS_DYN_LIB).a))
endif
#-----------------------------------------------------------------------------
# Do the package config
$(eval $(call manual-package-config,libffi))
#-----------------------------------------------------------------------------
#
# binary-dist
BINDIST_EXTRAS += libffi/package.conf.in
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