dev-perl/Wx: export CC as CXX due to xspp expectations

Previous eclass change modified behavior to explicitly set CC. This
broke expectiations for xspp as Wx was setting CC to CXX in a weak way.

https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=3a650e223a09b0616a4e619c73cc033478fb7a61
https://metacpan.org/release/MDOOTSON/Wx-0.9932/source/build/Wx/build/MakeMaker/Any_wx_config.pm#L27

Closes: https://bugs.gentoo.org/931939
Signed-off-by: Alfred Wingate <parona@protonmail.com>
Signed-off-by: Sam James <sam@gentoo.org>

dev-perl/Wx/Wx-0.993.200-r3.ebuild

@@ -7,7 +7,7 @@ WX_GTK_VER="3.2-gtk3"
 DIST_AUTHOR=MDOOTSON
 DIST_VERSION=0.9932
 DIST_EXAMPLES=("samples/*")
-inherit wxwidgets virtualx perl-module
+inherit toolchain-funcs wxwidgets virtualx perl-module
 
 DESCRIPTION="Perl bindings for wxGTK"
 HOMEPAGE="https://wxperl.sourceforge.net/ https://metacpan.org/release/Wx"
@@ -54,6 +54,13 @@ src_prepare() {
 	perl-module_src_prepare
 }
 
+src_configure() {
+	# xspp sets CC to a c++ compiler but the eclass overrides it
+	# https://bugs.gentoo.org/931939
+	export CC="$(tc-getCXX)"
+	perl-module_src_configure
+}
+
 src_test() {
 	# the webview/t/03_threads.t test tends to hang or crash in weird
 	# ways depending on local configuration. eg, backtraces involving