package/nodejs: build host-nodejs only if we're installing modules with NPM

Building host-nodejs is no longer needed to build the target nodejs,
unless npm is needed during the build, which happens when
BR2_PACKAGE_NODEJS_MODULES_ADDITIONAL is used.

We need to make that host-python3 is built with bz2 and ssl
support. Until now, it was done by the BR2_PACKAGE_HOST_NODEJS option,
but now that the target nodejs no longer depends on host-nodejs, we
are no longer guaranteed to have a host-python3 with bz2/ssl. To make
sure it is the case, we select the relevant options from
BR2_PACKAGE_NODEJS.

Signed-off-by: Alexandru Ardelean <ardeleanalex@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/nodejs/Config.in

@@ -27,7 +27,10 @@ config BR2_PACKAGE_NODEJS
 	# uses dlopen(). On ARMv5, we could technically support static
 	# linking, but that's too much of a corner case to support it.
 	depends on !BR2_STATIC_LIBS
-	select BR2_PACKAGE_HOST_NODEJS
+	select BR2_PACKAGE_HOST_NODEJS if BR2_PACKAGE_NODEJS_MODULES_ADDITIONAL != ""
+	select BR2_PACKAGE_HOST_PYTHON3
+	select BR2_PACKAGE_HOST_PYTHON3_BZIP2
+	select BR2_PACKAGE_HOST_PYTHON3_SSL
 	select BR2_PACKAGE_C_ARES
 	select BR2_PACKAGE_LIBUV
 	select BR2_PACKAGE_ZLIB

package/nodejs/nodejs.mk

@@ -8,7 +8,6 @@ NODEJS_VERSION = 16.16.0
 NODEJS_SOURCE = node-v$(NODEJS_VERSION).tar.xz
 NODEJS_SITE = http://nodejs.org/dist/v$(NODEJS_VERSION)
 NODEJS_DEPENDENCIES = \
-	host-nodejs \
 	host-ninja \
 	host-pkgconf \
 	host-python3 \
@@ -240,6 +239,7 @@ NPM = $(TARGET_CONFIGURE_OPTS) \
 # We can only call NPM if there's something to install.
 #
 ifneq ($(NODEJS_MODULES_LIST),)
+NODEJS_DEPENDENCIES += host-nodejs
 define NODEJS_INSTALL_MODULES
 	# If you're having trouble with module installation, adding -d to the
 	# npm install call below and setting npm_config_rollback=false can both