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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
#
# -----------------------------------------------------------------------------
# Compile GMP only if we don't have it already
#
# We use GMP's own configuration stuff, because it's all rather hairy
# and not worth re-implementing in our Makefile framework.
ifeq "$(findstring dyn, $(GhcRTSWays))" "dyn"
BUILD_SHARED=yes
else
BUILD_SHARED=no
endif
# In a bindist, we don't want to know whether /this/ machine has gmp,
# but whether the machine the bindist was built on had gmp.
ifeq "$(BINDIST)" "YES"
ifeq "$(wildcard gmp/libgmp.a)" ""
HaveLibGmp = YES
HaveFrameworkGMP = YES
else
HaveLibGmp = NO
HaveFrameworkGMP = NO
endif
endif
ifneq "$(HaveLibGmp)" "YES"
ifneq "$(HaveFrameworkGMP)" "YES"
INSTALL_LIBS += gmp/libgmp.a
$(eval $(call all-target,gmp_dynamic,gmp/libgmp.a))
ifeq "$(BUILD_SHARED)" "yes"
$(eval $(call all-target,gmp_dynamic,gmp/libgmp.dll.a gmp/libgmp-3.dll))
endif
endif
endif
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.
# We use a tarball like gmp-4.2.4-nodoc.tar.bz2, which is
# gmp-4.2.4.tar.bz2 repacked without the doc/ directory contents.
# That's because the doc/ directory contents are under the GFDL,
# which causes problems for Debian.
GMP_TARBALL := $(wildcard gmp/tarball/gmp*.tar.bz2)
GMP_DIR := $(patsubst gmp/tarball/%-nodoc.tar.bz2,%,$(GMP_TARBALL))
# XXX INSTALL_HEADERS += gmp.h
gmp/libgmp.a:
$(RM) -rf $(GMP_DIR) gmp/gmpbuild
cd gmp && $(TAR) -jxf ../$(GMP_TARBALL)
mv gmp/$(GMP_DIR) gmp/gmpbuild
chmod +x gmp/ln
cd gmp; (set -o igncr 2>/dev/null) && set -o igncr; export SHELLOPTS; \
PATH=`pwd`:$$PATH; \
export PATH; \
cd gmpbuild && \
CC=$(WhatGccIsCalled) $(SHELL) configure \
--enable-shared=no --host=$(PLATFORM) --build=$(PLATFORM)
$(MAKE) -C gmp/gmpbuild MAKEFLAGS=
$(CP) gmp/gmpbuild/.libs/libgmp.a gmp/
$(RANLIB) gmp/libgmp.a
$(eval $(call clean-target,gmp,,\
gmp/libgmp.a gmp/gmpbuild gmp/$(GMP_DIR)))
# XXX TODO:
#stamp.gmp.shared:
# $(RM) -rf $(GMP_DIR) gmpbuild-shared
# $(TAR) -zxf $(GMP_TARBALL)
# mv $(GMP_DIR) gmpbuild-shared
# chmod +x ln
# (set -o igncr 2>/dev/null) && set -o igncr; export SHELLOPTS; \
# PATH=`pwd`:$$PATH; \
# export PATH; \
# cd gmpbuild-shared && \
# CC=$(WhatGccIsCalled) $(SHELL) configure \
# --enable-shared=yes --disable-static --host=$(PLATFORM) --build=$(PLATFORM)
# touch $@
#
#gmp.h: stamp.gmp.static
# $(CP) gmpbuild/gmp.h .
#
#libgmp.a: stamp.gmp.static
#
#libgmp-3.dll: stamp.gmp.shared
# $(MAKE) -C gmpbuild-shared MAKEFLAGS=
# $(CP) gmpbuild-shared/.libs/libgmp-3.dll .
#
#libgmp.dll.a: libgmp-3.dll
# $(CP) gmpbuild-shared/.libs/libgmp.dll.a .
## GMP takes a long time to build, but changes rarely. Hence we don't
## bother cleaning it before validating, because that adds a
## significant overhead to validation.
#ifeq "$(Validating)" "NO"
#clean distclean maintainer-clean ::
# $(RM) -f stamp.gmp.static stamp.gmp.shared
# $(RM) -rf gmpbuild
# $(RM) -rf gmpbuild-shared
#endif
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