nodejs-lts-10: fix build for targets without native atomic8

patches/ppc32.patch used "host_arch" instead of "target_arch" to check
whether to link against -latomic, and didn't include 32-bit ARM in the
list of targets that might need it. This addresses build failures on
armv6l as well as some lesser-used architectures.

Additionally, libatomic-devel is now included in makedepends for all
architectures (not just when `XBPS_TARGET_NO_ATOMIC8` is set) because
the build system can't tell the difference between armv6l and
armv7l. This matches how it's done for `nodejs{,-lts}` and doesn't
cause the armv7l build to actually depend on libatomic at runtime.

srcpkgs/nodejs-lts-10/patches/atomic8.patch

@@ -0,0 +1,14 @@
+--- node.gyp
++++ node.gyp
+@@ -479,6 +479,11 @@
+       'msvs_disabled_warnings!': [4244],
+ 
+       'conditions': [
++        [ 'target_arch=="mips" or target_arch=="mipsel" or target_arch=="ppc" or target_arch=="arm"', {
++	  'link_settings': {
++	    'libraries': [ '-latomic' ],
++	  },
++	}],
+         [ 'node_code_cache_path!=""', {
+           'sources': [ '<(node_code_cache_path)' ]
+         }, {

srcpkgs/nodejs-lts-10/patches/ppc32.patch

@@ -9,20 +9,6 @@
      '__x86_64__'  : 'x64',
      '__s390__'    : 's390',
      '__s390x__'   : 's390x',
---- node.gyp
-+++ node.gyp
-@@ -479,6 +479,11 @@
-       'msvs_disabled_warnings!': [4244],
- 
-       'conditions': [
-+        [ 'host_arch=="mips" or host_arch=="mipsel" or host_arch=="ppc"', {
-+	  'link_settings': {
-+	    'libraries': [ '-latomic' ],
-+	  },
-+	}],
-         [ 'node_code_cache_path!=""', {
-           'sources': [ '<(node_code_cache_path)' ]
-         }, {
 --- deps/v8/src/libsampler/sampler.cc
 +++ deps/v8/src/libsampler/sampler.cc
 @@ -418,9 +418,15 @@ void SignalHandler::FillRegisterState(void* context, RegisterState* state) {

srcpkgs/nodejs-lts-10/template

@@ -1,14 +1,16 @@
 # Template file for 'nodejs-lts-10'
 pkgname=nodejs-lts-10
 version=10.24.0
-revision=1
+revision=2
 wrksrc="node-v${version}"
-hostmakedepends="pkg-config python zlib-devel which $(vopt_if icu icu-devel)
- $(vopt_if ssl openssl-devel) $(vopt_if libuv libuv-devel)
+# atomic8.patch will pull in -latomic even for some architectures
+# not covered by XBPS_TARGET_NO_ATOMIC8.
+hostmakedepends="pkg-config python which zlib-devel libatomic-devel
+ $(vopt_if icu icu-devel) $(vopt_if ssl openssl-devel) $(vopt_if libuv libuv-devel)
  $(vopt_if http_parser http-parser-devel) $(vopt_if nghttp2 nghttp2-devel)
  $(vopt_if cares c-ares-devel)"
-makedepends="zlib-devel python-devel $(vopt_if icu icu-devel)
- $(vopt_if ssl openssl-devel) $(vopt_if libuv libuv-devel)
+makedepends="libatomic-devel zlib-devel python-devel
+ $(vopt_if icu icu-devel) $(vopt_if ssl openssl-devel) $(vopt_if libuv libuv-devel)
  $(vopt_if http_parser http-parser-devel) $(vopt_if nghttp2 nghttp2-devel)
  $(vopt_if cares c-ares-devel)"
 checkdepends="procps-ng"
@@ -18,7 +20,7 @@ license="MIT"
 homepage="https://nodejs.org/"
 distfiles="${homepage}/download/release/v${version}/node-v${version}.tar.xz"
 checksum=158273af66f891b2fca90aec7336c42f7574f467affad02c14e80ca163cb3acc
-python_version=2 #unverified
+python_version=3
 
 build_options="ssl libuv http_parser icu nghttp2 cares"
 desc_option_ssl="Enable shared openssl"
@@ -37,13 +39,6 @@ if [ "$XBPS_WORDSIZE" -ne "$XBPS_TARGET_WORDSIZE" ]; then
 	nocross="host and target must have the same pointer size"
 fi
 
-if [ "$XBPS_TARGET_NO_ATOMIC8" ]; then
-	makedepends+=" libatomic-devel"
-fi
-if [ "$XBPS_NO_ATOMIC8" ]; then
-	hostmakedepends+=" libatomic-devel"
-fi
-
 CFLAGS="-D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64"
 CXXFLAGS="-D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64"