src_name=curl
version=7.59.0
archive_name=$src_name-$version.tar.xz
url0=http://curl.haxx.se/download/$archive_name

src_dir=$src_dir_root/$src_name-$version
cd $src_dir_root
rm -Rf $src_name-$version
tar xf $archive_name

build_dir=$builds_dir_root/$src_name-$version-$target_gnu_triple
rm -Rf $build_dir
mkdir -p $build_dir
cd $build_dir

OLD_PATH=$PATH
export PATH=$cross_toolchain_dir_root/bin:$PATH

export "PKG_CONFIG_LIBDIR=\
$target_sysroot/nyan/libidn2/0/lib/pkgconfig:\
$target_sysroot/nyan/gnutls/0/lib/pkgconfig:\
$target_sysroot/nyan/zlib/0/lib/pkgconfig:\
$target_sysroot/nyan/nyanuuid/0/lib/pkgconfig:\
$target_sysroot/nyan/nettle/0/lib/pkgconfig:\
$target_sysroot/nyan/libtasn1/0/lib/pkgconfig"
export PKG_CONFIG_SYSROOT_DIR=$target_sysroot

# at link time, the only way to tell gnu ld where to look for shared lib dependencies is to pass the -rpath-link option
export "CC=$target_gnu_triple-gcc -B$target_sysroot/nyan/glibc/current/lib -L$target_sysroot/nyan/glibc/current/lib -Wl,-rpath-link,$target_sysroot/nyan/glibc/current/lib -static-libgcc"
export 'CFLAGS=-O2 -pipe -fPIC'
export PATH_SEPARATOR=:
# must tell how to link with a static GNU gnutls and its deps: GNU libidn2 pkgconfig is not official in GNU gnutls and GNU GMP does not ever support pkgconfig
export "LIBS=-L$target_sysroot/nyan/toolchains/0/lib $(pkg-config --static --libs gnutls libidn2)"
$src_dir/configure			\
	--build=$build_gnu_triple	\
	--host=$target_gnu_triple	\
	--prefix=/nyan/curl/0		\
	--disable-debug			\
	--enable-optimize		\
	--disable-curldebug		\
	--enable-symbol-hiding		\
	--disable-ares			\
	--disable-shared		\
	--enable-http			\
	--enable-ftp			\
	--disable-file			\
	--disable-ldap			\
	--disable-ldaps			\
	--disable-rtsp			\
	--disable-proxy			\
	--disable-dict			\
	--disable-telnet		\
	--disable-tftp			\
	--disable-pop3 			\
	--disable-imap			\
	--disable-smb			\
	--disable-smtp			\
	--disable-gopher		\
	--disable-manual		\
	--enable-ipv6 			\
	--disable-versioned-symbols	\
	--enable-pthreads		\
	--enable-verbose		\
	--disable-sspi			\
	--disable-ntlm-wb		\
	--disable-tls-srp		\
	--enable-cookies		\
	--with-zlib			\
	--with-gnutls			\
	--without-polarssl		\
	--without-mbedtls		\
	--without-cyassl		\
	--without-nss			\
	--without-axtls			\
	--without-libssh2		\
	--without-librtmp		\
	--with-libidn2			\
	--without-nghttp2
unset LIBS
unset CFLAGS
unset CC

make -j $threads_n
make install DESTDIR=$target_sysroot
unset PATH_SEPARATOR

# cleanup and tidying
rm -Rf $target_sysroot/nyan/$src_name/0/share/man
rm -f $target_sysroot/nyan/$src_name/0/lib/*.la 
# curl pkgconfig generator is corrupted in cross-compilation
rm -Rf $target_sysroot/nyan/$src_name/0/lib/pkgconfig
$target_gnu_triple-strip -s $target_sysroot/nyan/$src_name/0/bin/$src_name

rm -Rf $build_dir $src_dir
export PATH=$OLD_PATH