[gentoo-dev] [PATCH 7/8] go-env.eclass: Add the go-env_goos() helper function

[James Le Cuirot <chewi@gentoo.org>]

This code is taken from dev-lang/go. No other packages have code like
this, but some erroneously call `go env GOOS`, which is bad for
cross-compiling. They should use this function instead.

Signed-off-by: James Le Cuirot <chewi@gentoo.org>
---
 eclass/go-env.eclass | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/eclass/go-env.eclass b/eclass/go-env.eclass
index c839c41be0d7e..be131133113be 100644
--- a/eclass/go-env.eclass
+++ b/eclass/go-env.eclass
@@ -48,6 +48,24 @@ go-env_set_compile_environment() {
 	export CGO_LDFLAGS="${CGO_LDFLAGS:-$LDFLAGS}"
 }
 
+# @FUNCTION: go-env_goos
+# @USAGE: [toolchain prefix]
+# @DESCRIPTION:
+# Returns the appropriate GOOS setting for the target operating system.
+go-env_goos() {
+	local target=${1:-${CHOST}}
+	case "${target}" in
+		*-linux*) echo linux ;;
+		*-darwin*) echo darwin ;;
+		*-freebsd*) echo freebsd ;;
+		*-netbsd*) echo netbsd ;;
+		*-openbsd*) echo openbsd ;;
+		*-solaris*) echo solaris ;;
+		*-cygwin*|*-interix*|*-winnt*) echo windows ;;
+		*) die "unknown GOOS for ${target}" ;;
+	esac
+}
+
 # @FUNCTION: go-env_goarch
 # @USAGE: [toolchain prefix]
 # @DESCRIPTION:
-- 
2.45.2