Build curl with minimal external libraries.

Link to our own libssh2.

(cherry picked from commit 4e12052)
ref #18103

deps/curl.mk

@@ -18,7 +18,14 @@ $(SRCDIR)/srccache/curl-$(CURL_VER)/configure: $(SRCDIR)/srccache/curl-$(CURL_VE
 $(BUILDDIR)/curl-$(CURL_VER)/config.status: $(SRCDIR)/srccache/curl-$(CURL_VER)/configure
 	mkdir -p $(dir $@)
 	cd $(dir $@) && \
-	$< $(CONFIGURE_COMMON) --includedir=$(build_includedir) --without-ssl --with-mbedtls=$(build_prefix) CFLAGS="$(CFLAGS) $(CURL_CFLAGS)" LDFLAGS="$(LDFLAGS) $(CURL_LDFLAGS)"
+	$< $(CONFIGURE_COMMON) --includedir=$(build_includedir) \
+	--without-ssl --without-gnutls --without-gssapi \
+	--without-libidn --without-libmetalink --without-librtmp \
+	--without-nghttp2 --without-nss --without-polarssl \
+	--without-spnego --disable-ares --disable-ldap \
+	--disable-ldaps --without-zsh-functions-dir \
+	--with-libssh2=$(build_prefix) --with-mbedtls=$(build_prefix) \
+	CFLAGS="$(CFLAGS) $(CURL_CFLAGS)" LDFLAGS="$(LDFLAGS) $(CURL_LDFLAGS)"
 	touch -c $@
 
 $(CURL_SRC_TARGET): $(BUILDDIR)/curl-$(CURL_VER)/config.status