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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
#
# -----------------------------------------------------------------------------
libffi_STAMP_STATIC_CONFIGURE = libffi/stamp.ffi.static.configure
libffi_STAMP_STATIC_BUILD = libffi/stamp.ffi.static.build
libffi_STAMP_STATIC_INSTALL = libffi/stamp.ffi.static.install
libffi_STAMP_STATIC_SHARED_CONFIGURE = libffi/stamp.ffi.static-shared.configure
libffi_STAMP_STATIC_SHARED_BUILD = libffi/stamp.ffi.static-shared.build
libffi_STAMP_STATIC_SHARED_INSTALL = libffi/stamp.ffi.static-shared.install
ifeq "$(BuildSharedLibs)" "YES"
libffi_STAMP_CONFIGURE = $(libffi_STAMP_STATIC_SHARED_CONFIGURE)
libffi_STAMP_BUILD = $(libffi_STAMP_STATIC_SHARED_BUILD)
libffi_STAMP_INSTALL = $(libffi_STAMP_STATIC_SHARED_INSTALL)
libffi_EnableShared = yes
else
libffi_STAMP_CONFIGURE = $(libffi_STAMP_STATIC_CONFIGURE)
libffi_STAMP_BUILD = $(libffi_STAMP_STATIC_BUILD)
libffi_STAMP_INSTALL = $(libffi_STAMP_STATIC_INSTALL)
libffi_EnableShared = no
endif
libffi_STATIC_LIB = libffi/build/inst/lib/libffi.a
ffi_HEADER = rts/dist/build/ffi.h
ifeq "$(OSTYPE)" "cygwin"
LIBFFI_PATH_MANGLE = PATH=$$(cygpath "$(TOP)")/libffi:$$PATH; export PATH;
endif
ifneq "$(BINDIST)" "YES"
$(libffi_STAMP_CONFIGURE):
"$(RM)" $(RM_OPTS) $(libffi_STAMP_STATIC_CONFIGURE)
"$(RM)" $(RM_OPTS) $(libffi_STAMP_STATIC_BUILD)
"$(RM)" $(RM_OPTS) $(libffi_STAMP_STATIC_INSTALL)
"$(RM)" $(RM_OPTS) $(libffi_STAMP_STATIC_SHARED_CONFIGURE)
"$(RM)" $(RM_OPTS) $(libffi_STAMP_STATIC_SHARED_BUILD)
"$(RM)" $(RM_OPTS) $(libffi_STAMP_STATIC_SHARED_INSTALL)
"$(RM)" $(RM_OPTS_REC) $(LIBFFI_DIR) libffi/build
cat ghc-tarballs/libffi/libffi*.tar.gz | $(GZIP_CMD) -d | { cd libffi && $(TAR_CMD) -xf - ; }
mv libffi/libffi-* libffi/build
# 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 links which cannot be read by mingw gcc.
chmod +x libffi/ln
# 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 && \
$(LIBFFI_PATH_MANGLE) \
cd build && \
CC=$(CC_STAGE1) \
LD=$(LD) \
AR=$(AR_STAGE1) \
NM=$(NM) \
CFLAGS="$(SRC_CC_OPTS) $(CONF_CC_OPTS_STAGE1) -w" \
LDFLAGS="$(SRC_LD_OPTS) $(CONF_GCC_LINKER_OPTS_STAGE1) -w" \
"$(SHELL)" configure \
--prefix=$(TOP)/libffi/build/inst \
--enable-static=yes \
--enable-shared=$(libffi_EnableShared) \
--host=$(HOSTPLATFORM) --build=$(BUILDPLATFORM)
# wc on OS X has spaces in its output, which libffi's Makefile
# doesn't expect, so we tweak it to sed them out
mv libffi/build/Makefile libffi/build/Makefile.orig
sed "s#wc -w#wc -w | sed 's/ //g'#" < libffi/build/Makefile.orig > libffi/build/Makefile
touch $@
$(libffi_STAMP_BUILD): $(libffi_STAMP_CONFIGURE)
$(MAKE) -C libffi/build MAKEFLAGS=
touch $@
$(libffi_STAMP_INSTALL): $(libffi_STAMP_BUILD)
$(MAKE) -C libffi/build MAKEFLAGS= install
touch $@
$(libffi_STATIC_LIB): $(libffi_STAMP_INSTALL)
@test -f $@ || { echo "$< exists, but $@ does not."; echo "Suggest removing $<."; exit 1; }
$(ffi_HEADER): $(libffi_STAMP_INSTALL) | $$(dir $$@)/.
cp libffi/build/inst/lib/libffi-*/include/ffitarget.h $(dir $@)
cp libffi/build/inst/lib/libffi-*/include/ffi.h $@
$(eval $(call clean-target,libffi,, \
libffi/build libffi/stamp.ffi.* libffi/dist-install))
endif
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