newapkbuild: do out-of-source CMake builds by default

It is recommended by upstream CMake (it will warn when you do in-source
builds) to keep generated files away from the source.

newapkbuild.in

@@ -61,7 +61,7 @@ build_cmake() {
 	if [ "\$CBUILD" != "\$CHOST" ]; then
 		CMAKE_CROSSOPTS="-DCMAKE_SYSTEM_NAME=Linux -DCMAKE_HOST_SYSTEM_NAME=Linux"
 	fi
-	cmake \\
+	cmake -B build \\
 		-DCMAKE_INSTALL_PREFIX=/usr \\
 		-DCMAKE_INSTALL_LIBDIR=lib \\
 		-DBUILD_SHARED_LIBS=True \\
@@ -69,7 +69,7 @@ build_cmake() {
 		-DCMAKE_CXX_FLAGS="\$CXXFLAGS" \\
 		-DCMAKE_C_FLAGS="\$CFLAGS" \\
 		\${CMAKE_CROSSOPTS} .
-	make
+	make -C build
 __EOF__
 }
 
@@ -124,6 +124,12 @@ check_make() {
 __EOF__
 }
 
+check_cmake() {
+	cat >>APKBUILD<<__EOF__
+	CTEST_OUTPUT_ON_FAILURE=1 make -C build check
+__EOF__
+}
+
 check_python() {
 	cat >>APKBUILD<<__EOF__
 	python3 setup.py test
@@ -156,6 +162,12 @@ package_make() {
 __EOF__
 }
 
+package_cmake() {
+	cat >>APKBUILD<<__EOF__
+	make -C build DESTDIR="\$pkgdir" install
+__EOF__
+}
+
 package_autotools() {
 	package_make
 }
@@ -348,8 +360,10 @@ check() {
 __EOF__
 
 	case "$buildtype" in
-	make|cmake|autotools|perl)
+	make|autotools|perl)
 		check_make;;
+	cmake)
+		check_cmake;;
 	python)
 		check_python;;
 	rust)
@@ -369,8 +383,10 @@ package() {
 __EOF__
 
 	case "$buildtype" in
-	make|cmake)
+	make)
 		package_make;;
+	cmake)
+		package_cmake;;
 	autotools)
 		package_autotools;;
 	meson)