Merge pull request #4259 from CJKay/cmake-config

Add CMake package config file

programs/test/cmake_package/.gitignore

@@ -0,0 +1,3 @@
+build
+Makefile
+cmake_package

programs/test/cmake_package/CMakeLists.txt

@@ -0,0 +1,36 @@
+cmake_minimum_required(VERSION 2.8.12)
+
+#
+# Simulate configuring and building Mbed TLS as the user might do it. We'll
+# skip installing it, and use the build directory directly instead.
+#
+
+set(MbedTLS_SOURCE_DIR "${CMAKE_CURRENT_SOURCE_DIR}/../../..")
+set(MbedTLS_BINARY_DIR "${CMAKE_CURRENT_BINARY_DIR}/mbedtls")
+
+execute_process(
+    COMMAND "${CMAKE_COMMAND}"
+        "-H${MbedTLS_SOURCE_DIR}"
+        "-B${MbedTLS_BINARY_DIR}"
+        "-DENABLE_PROGRAMS=NO"
+        "-DENABLE_TESTING=NO")
+
+execute_process(
+    COMMAND "${CMAKE_COMMAND}"
+        --build "${MbedTLS_BINARY_DIR}")
+
+#
+# Locate the package.
+#
+
+set(MbedTLS_DIR "${MbedTLS_BINARY_DIR}/cmake")
+find_package(MbedTLS REQUIRED)
+
+#
+# At this point, the Mbed TLS targets should have been imported, and we can now
+# link to them from our own program.
+#
+
+add_executable(cmake_package cmake_package.c)
+target_link_libraries(cmake_package
+    MbedTLS::mbedcrypto MbedTLS::mbedtls MbedTLS::mbedx509)

programs/test/cmake_package/cmake_package.c

@@ -0,0 +1,53 @@
+/*
+ *  Simple program to test that Mbed TLS builds correctly as a CMake package.
+ *
+ *  Copyright The Mbed TLS Contributors
+ *  SPDX-License-Identifier: Apache-2.0
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License"); you may
+ *  not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *  http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+
+#if !defined(MBEDTLS_CONFIG_FILE)
+#include "mbedtls/config.h"
+#else
+#include MBEDTLS_CONFIG_FILE
+#endif
+
+#if defined(MBEDTLS_PLATFORM_C)
+#include "mbedtls/platform.h"
+#else
+#include <stdio.h>
+#include <stdlib.h>
+#define mbedtls_fprintf         fprintf
+#define mbedtls_printf          printf
+#define mbedtls_exit            exit
+#define MBEDTLS_EXIT_SUCCESS    EXIT_SUCCESS
+#define MBEDTLS_EXIT_FAILURE    EXIT_FAILURE
+#endif /* MBEDTLS_PLATFORM_C */
+
+#include "mbedtls/version.h"
+
+/* The main reason to build this is for testing the CMake build, so the program
+ * doesn't need to do very much. It calls a single library function to ensure
+ * linkage works, but that is all. */
+int main()
+{
+    /* This version string is 18 bytes long, as advised by version.h. */
+    char version[18];
+
+    mbedtls_version_get_string_full( version );
+
+    mbedtls_printf( "Built against %s\n", version );
+
+    return( 0 );
+}

programs/test/cmake_package_install/.gitignore

@@ -0,0 +1,3 @@
+build
+Makefile
+cmake_package_install

programs/test/cmake_package_install/CMakeLists.txt

@@ -0,0 +1,39 @@
+cmake_minimum_required(VERSION 2.8.12)
+
+#
+# Simulate configuring and building Mbed TLS as the user might do it. We'll
+# install into a directory inside our own build directory.
+#
+
+set(MbedTLS_SOURCE_DIR "${CMAKE_CURRENT_SOURCE_DIR}/../../..")
+set(MbedTLS_INSTALL_DIR "${CMAKE_CURRENT_BINARY_DIR}/mbedtls")
+set(MbedTLS_BINARY_DIR "${MbedTLS_INSTALL_DIR}${CMAKE_FILES_DIRECTORY}")
+
+execute_process(
+    COMMAND "${CMAKE_COMMAND}"
+        "-H${MbedTLS_SOURCE_DIR}"
+        "-B${MbedTLS_BINARY_DIR}"
+        "-DENABLE_PROGRAMS=NO"
+        "-DENABLE_TESTING=NO"
+        "-DCMAKE_INSTALL_PREFIX=${MbedTLS_INSTALL_DIR}")
+
+execute_process(
+    COMMAND "${CMAKE_COMMAND}"
+        --build "${MbedTLS_BINARY_DIR}"
+        --target install)
+
+#
+# Locate the package.
+#
+
+set(MbedTLS_DIR "${MbedTLS_INSTALL_DIR}/cmake")
+find_package(MbedTLS REQUIRED)
+
+#
+# At this point, the Mbed TLS targets should have been imported, and we can now
+# link to them from our own program.
+#
+
+add_executable(cmake_package_install cmake_package_install.c)
+target_link_libraries(cmake_package_install
+    MbedTLS::mbedcrypto MbedTLS::mbedtls MbedTLS::mbedx509)

programs/test/cmake_package_install/cmake_package_install.c

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+/*
+ * Simple program to test that Mbed TLS builds correctly as an installable CMake
+ * package.
+ *
+ *  Copyright The Mbed TLS Contributors
+ *  SPDX-License-Identifier: Apache-2.0
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License"); you may
+ *  not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *  http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+
+#if !defined(MBEDTLS_CONFIG_FILE)
+#include "mbedtls/config.h"
+#else
+#include MBEDTLS_CONFIG_FILE
+#endif
+
+#if defined(MBEDTLS_PLATFORM_C)
+#include "mbedtls/platform.h"
+#else
+#include <stdio.h>
+#include <stdlib.h>
+#define mbedtls_fprintf         fprintf
+#define mbedtls_printf          printf
+#define mbedtls_exit            exit
+#define MBEDTLS_EXIT_SUCCESS    EXIT_SUCCESS
+#define MBEDTLS_EXIT_FAILURE    EXIT_FAILURE
+#endif /* MBEDTLS_PLATFORM_C */
+
+#include "mbedtls/version.h"
+
+/* The main reason to build this is for testing the CMake build, so the program
+ * doesn't need to do very much. It calls a single library function to ensure
+ * linkage works, but that is all. */
+int main()
+{
+    /* This version string is 18 bytes long, as advised by version.h. */
+    char version[18];
+
+    mbedtls_version_get_string_full( version );
+
+    mbedtls_printf( "Built against %s\n", version );
+
+    return( 0 );
+}