ruby: musl fixes, allow testsuite to pass

srcpkgs/ruby/template

@@ -3,7 +3,7 @@ _ruby_abiver=2.7.0
 
 pkgname=ruby
 version=2.7.1
-revision=2
+revision=3
 build_style=gnu-configure
 configure_args="--enable-shared --disable-rpath
  DOXYGEN=/usr/bin/doxygen DOT=/usr/bin/dot PKG_CONFIG=/usr/bin/pkg-config"
@@ -38,6 +38,7 @@ case "$XBPS_TARGET_MACHINE" in
 		configure_args+=" --with-coroutine=ppc64le"
 		;;
 	ppc-musl)
+		_need_libucontext=yes
 		makedepends+=" libucontext-devel"
 		configure_args+=" LIBS=-lucontext"
 		;;
@@ -54,6 +55,25 @@ post_patch() {
 	patch -sNp1 -i ${FILESDIR}/rubygems-avoid-platform-specific-gems.patch
 }
 
+pre_configure() {
+	# this allows the test suite to pass without crashing
+	export CFLAGS+=" -fno-omit-frame-pointer -fno-strict-aliasing"
+	export CPPFLAGS+=" -fno-omit-frame-pointer -fno-strict-aliasing"
+
+	case "$XBPS_TARGET_MACHINE" in
+		ppc64le*) ;;
+		ppc*)
+			# Random segfaults otherwise
+			export CFLAGS+=" -Os"
+			export CPPFLAGS+=" -Os"
+			;;
+	esac
+
+	# force this to pass on systems with these as macros (musl)
+	export ac_cv_func_isnan=yes
+	export ac_cv_func_isinf=yes
+}
+
 pre_build() {
 	# Force getaddrinfo detection.
 	sed -e 's,\(checking_for("wide getaddrinfo") {try_\)run,\1link,' -i ext/socket/extconf.rb
@@ -99,9 +119,9 @@ ruby-devel-doc_package() {
 
 ruby-devel_package() {
 	depends="ruby-${version}_${revision} gmp-devel"
-	case "$XBPS_TARGET_MACHINE" in
-		ppc-musl) depends+=" libucontext-devel" ;;
-	esac
+	if [ "$_need_libucontext" ]; then
+		depends+=" libucontext-devel"
+	fi
 	short_desc+=" - development files"
 	pkg_install() {
 		vmove usr/include