GHC new build system megapatch

1 files changed, 193 insertions, 0 deletions

diff --git a/libffi/ghc.mk b/libffi/ghc.mk
new file mode 100644
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+++ b/libffi/ghc.mk
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+
+# 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_BUILD     = libffi/stamp.ffi.build-shared
+libffi_STAMP_CONFIGURE = libffi/stamp.ffi.configure-shared
+else
+libffi_STAMP_BUILD     = libffi/stamp.ffi.build
+libffi_STAMP_CONFIGURE = libffi/stamp.ffi.configure
+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-ghc$(ProjectVersion)$(soext)
+libffi_HS_DYN_LIB_PATH=libffi/$(libffi_HS_DYN_LIB_NAME)
+
+ifeq "$(Windows)" "YES"
+libffi_DYNAMIC_PROG = $(libffi_HS_DYN_LIB_PATH).a
+libffi_DYNAMIC_LIBS = $(libffi_HS_DYN_LIB_PATH)
+else
+libffi_DYNAMIC_PROG =
+libffi_DYNAMIC_LIBS = libffi/libffi.so libffi/libffi.so.5 libffi/libffi.so.5.0.7
+endif
+
+ifeq "$(BuildSharedLibs)" "YES"
+libffi_EnableShared=yes
+else
+libffi_EnableShared=no
+endif
+
+ifeq "$(BuildSharedLibs)" "YES"
+INSTALL_LIBS  += $(libffi_HS_DYN_LIB_PATH)
+ifeq "$(Windows)" "YES"
+INSTALL_PROGS += $(libffi_HS_DYN_LIB_PATH).a
+endif
+endif
+
+# We have to fake a non-working ln for configure, so that the fallback
+# option (cp -p) gets used instead.  Otherwise the libffi build system
+# will use cygwin symbolic linkks which cannot be read by mingw gcc.
+# The same trick is played by the GMP build in ../gmp.
+
+ifneq "$(BINDIST)" "YES"
+$(libffi_STAMP_CONFIGURE):
+	$(RM) -rf $(LIBFFI_DIR) libffi/build
+	cd libffi && $(TAR) -zxf tarball/libffi*.tar.gz
+	mv libffi/libffi-* libffi/build
+	chmod +x libffi/ln
+	cd libffi && $(PATCH) -p0 < libffi.dllize-3.0.6.patch
+
+	# This patch is just the resulting delta from running automake, autoreconf, libtoolize --force --copy
+	cd libffi && $(PATCH) -p0 < libffi.autotools-update.patch
+
+	cd libffi && \
+	  (set -o igncr 2>/dev/null) && set -o igncr; export SHELLOPTS; \
+	    PATH=`pwd`:$$PATH; \
+	    export PATH; \
+	    cd build && \
+	    CC=$(WhatGccIsCalled) $(SHELL) configure \
+		  --enable-static=yes \
+	          --enable-shared=$(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)
+	$(CP) $(libffi_STATIC_LIB) libffi/libHSffi.a
+	$(CP) $(libffi_STATIC_LIB) libffi/libHSffi_p.a
+	touch $@
+
+libffi/libHSffi.a libffi/libHSffi_p.a: $(libffi_STAMP_BUILD)
+
+all_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; \
+	  $(CC) -c empty.c -o HSffi.o
+
+all_libffi : libffi/HSffi.o
+
+ifeq "$(BuildSharedLibs)" "YES"
+ifeq "$(Windows)" "YES"
+# Windows libtool creates <soname>.dll, and as we already patched that
+# there is no need to copy from libffi.dll to libHSffi...dll.
+# However, the renaming is still required for the import library
+# libffi.dll.a.
+$(libffi_HS_DYN_LIB_PATH).a: $(libffi_STAMP_BUILD)
+	$(CP) libffi/libffi.dll.a $(libffi_HS_DYN_LIB_PATH).a
+all_libffi : $(libffi_HS_DYN_LIB_PATH).a
+
+else
+# Rename libffi.so to libHSffi...so
+$(libffi_HS_DYN_LIB_PATH): $(libffi_DYNAMIC_LIBS)
+	$(CP) $(word 1,$(libffi_DYNAMIC_LIBS)) $(libffi_HS_DYN_LIB_PATH)
+
+all_libffi : $(libffi_HS_DYN_LIB_PATH)
+endif
+endif
+
+$(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_NAME) $(libffi_HS_DYN_LIB_NAME).a))
+endif
+
+#-----------------------------------------------------------------------------
+# Do the package config
+
+$(eval $(call manual-package-config,libffi))
+
+#-----------------------------------------------------------------------------
+#
+# binary-dist
+
+BINDIST_EXTRAS += libffi/package.conf.in
+