...

chmod +x libraries/integer-gmp2/gmp/ln

# Their cmd invocation only works on msys. On cygwin it starts

# a cmd interactive shell. The replacement works in both environments.

mv libraries/integer-gmp2/gmp/gmpbuild/ltmain.sh libraries/integer-gmp2/gmp/gmpbuild/ltmain.sh.orig

sed 's#cmd //c echo "\$1"#cmd /c "echo $1"#' < libraries/integer-gmp2/gmp/gmpbuild/ltmain.sh.orig > libraries/integer-gmp2/gmp/gmpbuild/ltmain.sh

cd libraries/integer-gmp2/gmp; (set -o igncr 2>/dev/null) && set -o igncr; export SHELLOPTS; \

   PATH=`pwd`:$PATH; \

   export PATH; \

   cd gmpbuild && \

   CC=clang NM=/usr/bin/nm AR=/usr/bin/ar ./configure \

         --enable-shared=no \

         --host=x86_64-apple-darwin --build=x86_64-apple-darwin

/bin/sh: SHELLOPTS: readonly variable

checking build system type... /bin/sh: SHELLOPTS: readonly variable

/bin/sh: SHELLOPTS: readonly variable

x86_64-apple-darwin

checking host system type... /bin/sh: SHELLOPTS: readonly variable

/bin/sh: SHELLOPTS: readonly variable

x86_64-apple-darwin

checking for a BSD-compatible install... /usr/bin/install -c

checking whether build environment is sane... yes

/bin/sh: SHELLOPTS: readonly variable

checking for a thread-safe mkdir -p... ./install-sh -c -d

checking for gawk... no

checking for mawk... no

checking for nawk... no

checking for awk... awk

checking whether make sets $(MAKE)... yes

checking whether to enable maintainer-specific portions of Makefiles... no

checking ABI=64

checking whether clang is gcc... yes

checking compiler clang -O2 -pedantic -fPIC -m64 ... no, gnupro alpha ev6 char spilling

checking ABI=32

checking whether clang is gcc... yes

checking compiler clang -m32 -O2 -pedantic -fPIC -fomit-frame-pointer ... no, gnupro alpha ev6 char spilling

checking compiler clang -O2 -pedantic -fPIC -fomit-frame-pointer ... no, gnupro alpha ev6 char spilling

configure: error: could not find a working compiler, see config.log for details

make[1]: *** [libraries/integer-gmp2/gmp/gmp.h] Error 1

make: *** [all] Error 2