classes/meson: Add optional rust definitions

Adds the rust tools to the cross and native files if present so that
projects that use both rust and meson can build

Signed-off-by: Joshua Watt <JPEWhacker@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

diff --git a/meta/classes/meson.bbclass b/meta/classes/meson.bbclass
index 4ba70de3dc396812d05d56f7cdf36d828ba51441..a7981e481fb16da284a4646db44513b03f8963cc 100644 (file)
--- a/meta/classes/meson.bbclass
+++ b/meta/classes/meson.bbclass
@@ -36,8 +36,15 @@ MESON_CROSS_FILE = ""
 MESON_CROSS_FILE:class-target = "--cross-file ${WORKDIR}/meson.cross"
 MESON_CROSS_FILE:class-nativesdk = "--cross-file ${WORKDIR}/meson.cross"
 
+def rust_tool(d, target_var):
+    rustc = d.getVar('RUSTC')
+    if not rustc:
+        return ""
+    cmd = [rustc, "--target", d.getVar(target_var)] + d.getVar("RUSTFLAGS").split()
+    return "rust = %s" % repr(cmd)
+
 addtask write_config before do_configure
-do_write_config[vardeps] += "CC CXX LD AR NM STRIP READELF CFLAGS CXXFLAGS LDFLAGS"
+do_write_config[vardeps] += "CC CXX LD AR NM STRIP READELF CFLAGS CXXFLAGS LDFLAGS RUSTC RUSTFLAGS"
 do_write_config() {
     # This needs to be Py to split the args into single-element lists
     cat >${WORKDIR}/meson.cross <<EOF
@@ -54,6 +61,7 @@ llvm-config = 'llvm-config${LLVMVERSION}'
 cups-config = 'cups-config'
 g-ir-scanner = '${STAGING_BINDIR}/g-ir-scanner-wrapper'
 g-ir-compiler = '${STAGING_BINDIR}/g-ir-compiler-wrapper'
+${@rust_tool(d, "HOST_SYS")}
 
 [built-in options]
 c_args = ${@meson_array('CFLAGS', d)}
@@ -88,6 +96,7 @@ strip = ${@meson_array('BUILD_STRIP', d)}
 readelf = ${@meson_array('BUILD_READELF', d)}
 objcopy = ${@meson_array('BUILD_OBJCOPY', d)}
 pkgconfig = 'pkg-config-native'
+${@rust_tool(d, "BUILD_SYS")}
 
 [built-in options]
 c_args = ${@meson_array('BUILD_CFLAGS', d)}