CMake: Export and install library targets.

The configs can be consumed by setting LibreSSL_DIR to the build
directory, or after installation using CMAKE_PREFIX_PATH/LibreSSL_DIR.

For compatibility, the EXPORT_NAME of targets and the LIBRESSL_*
variables are set to match the names used in FindLibreSSL.

1 files changed, 29 insertions, 3 deletions

diff --git a/tls/CMakeLists.txt b/tls/CMakeLists.txt
index 2a90192..a8f29af 100644
--- a/tls/CMakeLists.txt
+++ b/tls/CMakeLists.txt
@@ -58,9 +58,29 @@ if (WIN32)
 endif()
 set_target_properties(tls PROPERTIES
         OUTPUT_NAME tls${TLS_POSTFIX}
-        ARCHIVE_OUTPUT_NAME tls${TLS_POSTFIX})
-set_target_properties(tls PROPERTIES VERSION ${TLS_VERSION}
-        SOVERSION ${TLS_MAJOR_VERSION})
+        ARCHIVE_OUTPUT_NAME tls${TLS_POSTFIX}
+        EXPORT_NAME TLS
+        VERSION ${TLS_VERSION}
+        SOVERSION ${TLS_MAJOR_VERSION}
+)
+
+target_include_directories(
+        tls
+        PUBLIC
+        $<BUILD_INTERFACE:${CMAKE_BINARY_DIR}/include>
+        $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>
+)
+
+install(
+        TARGETS tls
+        EXPORT TLS-target
+)
+
+export(
+        EXPORT TLS-target
+        FILE "${LibreSSL_BINARY_DIR}/LibreSSL-TLS.cmake"
+        NAMESPACE LibreSSL::
+)
 
 if(ENABLE_LIBRESSL_INSTALL)
         install(
@@ -69,6 +89,12 @@ if(ENABLE_LIBRESSL_INSTALL)
                 LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
                 RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
         )
+        install(
+                EXPORT TLS-target
+                FILE "LibreSSL-TLS.cmake"
+                NAMESPACE LibreSSL::
+                DESTINATION "${LIBRESSL_INSTALL_CMAKEDIR}/LibreSSL"
+        )
 endif(ENABLE_LIBRESSL_INSTALL)
 
 # build static library for regression test