package/nodejs: use host-libopenssl

host-nodejs is configured to build openssl by using its included openssl
source code which is based on openssl 1.0.2. If host-libopenssl was
already built its header files are being picked up during host-nodejs
build, this was verified by adding debug code to
$(HOST_DIR)/include/openssl/opensslv.h.

This situation was not a problem as long as host-libopenssl was the
same version than the openssl code included in nodejs.

Some code in host-nodejs-8.11.4/src/node_crypto.cc is guarded by

	#if OPENSSL_VERSION_NUMBER < 0x10100000L

to be used only with openssl 1.0.x.

This leads to problems if host-libopenssl 1.1.x was built before. Due
to the usage of its header files some code in node_crypto.cc is not
built leading to many linking errors later on, for example:

node_crypto.cc:(.text+0x1a1): undefined reference to `DH_get0_pqg'

When the nodejs package originally was added to buildroot back in
March 2013:
https://git.buildroot.net/buildroot/commit/?id=b31bc7d4387095091a109eb879464d54d37a5eab

We did not have a host-libopenssl package back then, it was added one
month later:
https://git.buildroot.net/buildroot/commit/?id=7842789cb539b6b64d61b03f5c8dbe6813f01da7

To fix the problem we use host-libopenssl for host-nodejs.
By using host-libopenssl the build time of nodejs is reduced by ~15s.

Signed-off-by: Bernd Kuhls <bernd.kuhls@t-online.de>
Reviewed-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/nodejs/nodejs.mk

@@ -10,7 +10,7 @@ NODEJS_SITE = http://nodejs.org/dist/v$(NODEJS_VERSION)
 NODEJS_DEPENDENCIES = host-python host-nodejs c-ares \
 	libhttpparser libuv zlib \
 	$(call qstrip,$(BR2_PACKAGE_NODEJS_MODULES_ADDITIONAL_DEPS))
-HOST_NODEJS_DEPENDENCIES = host-python host-zlib
+HOST_NODEJS_DEPENDENCIES = host-libopenssl host-python host-zlib
 NODEJS_LICENSE = MIT (core code); MIT, Apache and BSD family licenses (Bundled components)
 NODEJS_LICENSE_FILES = LICENSE
 
@@ -50,10 +50,6 @@ define HOST_NODEJS_CONFIGURE_CMDS
 	mkdir -p $(@D)/bin
 	ln -sf $(HOST_DIR)/bin/python2 $(@D)/bin/python
 
-	# Build with the static, built-in OpenSSL which is supplied as part of
-	# the nodejs source distribution.  This is needed on the host because
-	# NPM is non-functional without it, and host-openssl isn't part of
-	# buildroot.
 	(cd $(@D); \
 		$(HOST_CONFIGURE_OPTS) \
 		PATH=$(@D)/bin:$(BR_PATH) \
@@ -63,6 +59,9 @@ define HOST_NODEJS_CONFIGURE_CMDS
 		--without-snapshot \
 		--without-dtrace \
 		--without-etw \
+		--shared-openssl \
+		--shared-openssl-includes=$(HOST_DIR)/include/openssl \
+		--shared-openssl-libpath=$(HOST_DIR)/lib \
 		--shared-zlib \
 		--with-intl=none \
 	)