app-emulation/hercules: do not delete libtool module .la files #720342

Since hercules uses libltdl to load its internal modules, we need to
leave the .la files in place for it to process.

Also add subslot linkage to these libs while we're updating.

Bug: https://bugs.gentoo.org/252716
Closes: https://bugs.gentoo.org/720342
Signed-off-by: Mike Frysinger <vapier@gentoo.org>

app-emulation/hercules/hercules-3.13-r1.ebuild

@@ -1,7 +1,7 @@
 # Copyright 1999-2021 Gentoo Authors
 # Distributed under the terms of the GNU General Public License v2
 
-EAPI=7
+EAPI="7"
 
 inherit autotools flag-o-matic
 
@@ -15,10 +15,10 @@ KEYWORDS="~alpha ~amd64 ~ppc ~sparc ~x86 ~x64-macos"
 IUSE="bzip2 custom-cflags +suid"
 
 RDEPEND="
-	dev-libs/libltdl
+	dev-libs/libltdl:=
 	net-libs/libnsl:0=
-	sys-libs/zlib
-	bzip2? ( app-arch/bzip2 )"
+	sys-libs/zlib:=
+	bzip2? ( app-arch/bzip2:= )"
 DEPEND="${RDEPEND}"
 
 PATCHES=(
@@ -61,6 +61,6 @@ src_install() {
 	insinto /usr/share/hercules
 	doins hercules.cnf
 
-	# no static archives
-	find "${D}" -name '*.la' -delete || die
+	# No static archives.  Have to leave .la files for modules. #720342
+	rm "${ED}/usr/$(get_libdir)/"*.la || die
 }