testing/azure-iot-sdk-c-static: use cmake3.5, modernize APKBUILD

testing/azure-iot-sdk-c-static/APKBUILD

@@ -8,7 +8,7 @@ url="https://github.com/Azure/azure-iot-sdk-c"
 arch="all"
 license="MIT"
 options="!check" # make check not implemented
-makedepends="cmake openssl-dev openssl-libs-static libcurl curl-dev libuuid util-linux-dev busybox"
+makedepends="cmake samurai openssl-dev openssl-libs-static libcurl curl-dev libuuid util-linux-dev busybox"
 _azure_c_shared_utility_commit="4f1b7cd6bf48833fe4b9e23e2ff07510753faee5"
 _azure_umqtt_c_commit="9201d60bbc12a02ac5456b6105bb50919d392105"
 _azure_uamqp_c_commit="b7bdf307a0db8840156d9f6e40f704c1d5924306"
@@ -53,26 +53,20 @@ prepare() {
 }
 
 build() {
-	mkdir -p cmake-build
-	cd cmake-build
-
 	if [ "$CBUILD" != "$CHOST" ]; then
-		CMAKE_CROSSOPTS="-DCMAKE_SYSTEM_NAME=Linux -DCMAKE_HOST_SYSTEM_NAME=Linux"
+		crossopts="-DCMAKE_SYSTEM_NAME=Linux -DCMAKE_HOST_SYSTEM_NAME=Linux"
 	fi
-
-	cmake \
+	cmake3.5 -B build \
 		-DCMAKE_INSTALL_PREFIX=/usr \
 		-DCMAKE_INSTALL_LIBDIR=lib \
 		-DCMAKE_BUILD_TYPE=None \
 		-Duse_amqp=OFF \
-		${CMAKE_CROSSOPTS} ..
-	cmake --build .
+		$crossopts
+	cmake --build build
 }
 
 package() {
-	cd "$builddir"/cmake-build
-	make DESTDIR="$pkgdir" install
-
+	DESTDIR="$pkgdir" cmake --install build
 	mv "$pkgdir"/usr/cmake "$pkgdir"/usr/lib/cmake
 }