New comment by sgn on void-packages repository

https://github.com/void-linux/void-packages/pull/26952#issuecomment-744140330

Comment:
This could be used to fix cross, but I don't know why npm doesn't pick wrapped `pkg-config`
```diff
diff --git a/srcpkgs/joplin-cli/template b/srcpkgs/joplin-cli/template
index 2f04a10dd0..abfeddbd98 100644
--- a/srcpkgs/joplin-cli/template
+++ b/srcpkgs/joplin-cli/template
@@ -14,6 +14,12 @@ distfiles="https://github.com/laurent22/joplin/archive/v${version}.tar.gz"
 checksum=55aad4fe50e2da980983a69bc7c0870626064db971550d522e266feb17d38916
 python_version=3
 
+if [ "$CROSS_BUILD" ]; then
+	export PKG_CONFIG_SYSROOT_DIR="$XBPS_CROSS_BASE"
+	export PKG_CONFIG_LIBDIR="$XBPS_CROSS_BASE/usr/lib/pkgconfig"
+	export PKG_CONFIG_PATH="$PKG_CONFIG_LIBDIR:$XBPS_CROSS_BASE/usr/share/pkgconfig"
+fi
+
 do_build() {
 	# Remove unused modules
 	rm -rf packages/{app-mobile,app-desktop,app-clipper,generator-joplin}
diff --git a/srcpkgs/joplin-desktop/template b/srcpkgs/joplin-desktop/template
index ff200fcd7c..6fc7ab0faf 100644
--- a/srcpkgs/joplin-desktop/template
+++ b/srcpkgs/joplin-desktop/template
@@ -13,11 +13,18 @@ license="MIT"
 homepage="https://joplinapp.org"
 distfiles="https://github.com/laurent22/joplin/archive/v${version}.tar.gz"
 checksum=55aad4fe50e2da980983a69bc7c0870626064db971550d522e266feb17d38916
+no_generic_pkgconfig_link=yes
 
 export USE_SYSTEM_7ZA="true"
 export USE_SYSTEM_APP_BUILDER="true"
 export USE_SYSTEM_MKSQUASHFS="true"
 
+if [ "$CROSS_BUILD" ]; then
+	export PKG_CONFIG_SYSROOT_DIR="$XBPS_CROSS_BASE"
+	export PKG_CONFIG_LIBDIR="$XBPS_CROSS_BASE/usr/lib/pkgconfig"
+	export PKG_CONFIG_PATH="$PKG_CONFIG_LIBDIR:$XBPS_CROSS_BASE/usr/share/pkgconfig"
+fi
+
 do_build() {
 	# Remove unused modules
 	rm -rf packages/{app-mobile,app-cli,generator-joplin,app-clipper}
```