commit 86e7e78b4694058e0b2c9fcdaaa3d2de88d383f5
Author: Petr Zima <zima@matfyz.cz>
Date:   Thu Apr 2 20:05:08 2020 +0200

    sci-mathematics/maxima: fix build w/o ccl

diff --git a/sci-mathematics/maxima/maxima-5.43.2.ebuild b/sci-mathematics/maxima/maxima-5.43.2.ebuild
index e920da9..ba2a57a 100644
--- a/sci-mathematics/maxima/maxima-5.43.2.ebuild
+++ b/sci-mathematics/maxima/maxima-5.43.2.ebuild
@@ -136,12 +136,13 @@ src_configure() {
 			use amd64 && CONF=ccl64
 		fi
 		CONFS="${CONFS} --enable-${CONF}"
+		if [[ ${CONF} == ccl ]]; then
+			# Gentoo calls 'ccl' both 32-bit and 64-bit version of clozurecl.
+			# bug #665364
+			CONFS="${CONFS} --with-ccl64=ccl"
+		fi
 	done
 
-	# Gentoo calls 'ccl' both 32-bit and 64-bit version of clozurecl.
-	# bug #665364
-	CONFS="${CONFS} --with-ccl64=ccl"
-
 	# enable existing translated doc
 	if use nls; then
 		for lang in ${LANGS}; do