Add CMake package config file
This change enables automatic detection and consumption of Mbed TLS
library targets from within other CMake projects. By generating an
`MbedTLSConfig.cmake` file, consuming projects receive a more complete
view of these targets, allowing them to be used as dependencies which
properly inherit the transitive dependencies of the libraries.
This is fairly fragile, as it seems Mbed TLS's libraries do not appear
to properly model their dependencies on other targets, including
third-party dependencies. It is, however, sufficient for building and
linking the compiled Mbed TLS libraries when there are no third-party
dependencies involved. Further work is needed for more complex
use-cases, but this will likely meet the needs of most projects.
Resolves #298. Probably useful for #2857.
Signed-off-by: Chris Kay <chris.kay@arm.com>
diff --git a/CMakeLists.txt b/CMakeLists.txt
index f648f22..4630eab 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -18,6 +18,8 @@
cmake_minimum_required(VERSION 2.8.12)
+include(CMakePackageConfigHelpers)
+
# https://cmake.org/cmake/help/latest/policy/CMP0011.html
# Setting this policy is required in CMake >= 3.18.0, otherwise a warning is generated. The OLD
# policy setting is deprecated, and will be removed in future versions.
@@ -221,7 +223,6 @@
add_subdirectory(include)
add_subdirectory(3rdparty)
-list(APPEND libs ${thirdparty_lib})
add_subdirectory(library)
@@ -300,3 +301,37 @@
${CMAKE_CURRENT_BINARY_DIR}/DartConfiguration.tcl COPYONLY)
endif()
endif()
+
+configure_package_config_file(
+ "cmake/MbedTLSConfig.cmake.in"
+ "cmake/MbedTLSConfig.cmake"
+ INSTALL_DESTINATION "cmake")
+
+write_basic_package_version_file(
+ "cmake/MbedTLSConfigVersion.cmake"
+ COMPATIBILITY SameMajorVersion
+ VERSION 2.26.0)
+
+install(
+ FILES "${CMAKE_CURRENT_BINARY_DIR}/cmake/MbedTLSConfig.cmake"
+ "${CMAKE_CURRENT_BINARY_DIR}/cmake/MbedTLSConfigVersion.cmake"
+ DESTINATION "cmake")
+
+export(
+ EXPORT MbedTLSTargets
+ NAMESPACE MbedTLS::
+ FILE "cmake/MbedTLSTargets.cmake")
+
+install(
+ EXPORT MbedTLSTargets
+ NAMESPACE MbedTLS::
+ DESTINATION "cmake"
+ FILE "MbedTLSTargets.cmake")
+
+if(CMAKE_VERSION VERSION_GREATER 3.14)
+ # Do not export the package by default
+ cmake_policy(SET CMP0090 NEW)
+
+ # Make this package visible to the system
+ export(PACKAGE MbedTLS)
+endif()