sci-calculators/hexcalc: force gcc -E for imake's generation

Requires traditional cpp support and is broken in all sort of ways
with clang-cpp / -E. Can still use clang & friends for everything else.

Ideally these packages need to be built another way or last rited,
imake will just accumulate more problems.

Signed-off-by: Ionen Wolkens <ionen@gentoo.org>

sci-calculators/hexcalc/hexcalc-1.11-r4.ebuild

@@ -23,6 +23,7 @@ DEPEND="
 	x11-base/xorg-proto"
 BDEPEND="
 	app-text/rman
+	sys-devel/gcc
 	>=x11-misc/imake-1.0.8-r1"
 
 PATCHES=(
@@ -32,7 +33,7 @@ PATCHES=(
 
 src_configure() {
 	CC="$(tc-getBUILD_CC)" LD="$(tc-getLD)" \
-		IMAKECPP="${IMAKECPP:-$(tc-getCPP)}" xmkmf || die
+		IMAKECPP="${IMAKECPP:-${CHOST}-gcc -E}" xmkmf || die
 }
 
 src_compile() {