From: Paweł Wegner <lemourin@google.com>
Date: Fri, 14 May 2021 10:36:12 +0000 (+0200)
Subject: CMake: add CURL_ENABLE_EXPORT_TARGET option
X-Git-Tag: curl-7_77_0~8
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=643ec296456ba98c536857fce3ecfd021d44d913;p=thirdparty%2Fcurl.git

CMake: add CURL_ENABLE_EXPORT_TARGET option

install(EXPORT ...) causes trouble when embedding curl dependencies
which don't provide install(EXPORT ...) targets (e.g libressl and
nghttp2) with cmake's add_subdirectory.

Reviewed-by: Jakub Zakrzewski
Closes #7060
---

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 63944877a9..0e06f1bbb5 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -191,6 +191,9 @@ mark_as_advanced(CURL_DISABLE_GOPHER)
 option(CURL_DISABLE_MQTT "to disable MQTT" OFF)
 mark_as_advanced(CURL_DISABLE_MQTT)
 
+option(CURL_ENABLE_EXPORT_TARGET "to enable cmake export target" ON)
+mark_as_advanced(CURL_ENABLE_EXPORT_TARGET)
+
 if(HTTP_ONLY)
   set(CURL_DISABLE_DICT ON)
   set(CURL_DISABLE_FILE ON)
@@ -1561,11 +1564,13 @@ configure_package_config_file(CMake/curl-config.cmake.in
         INSTALL_DESTINATION ${CURL_INSTALL_CMAKE_DIR}
 )
 
-install(
-        EXPORT "${TARGETS_EXPORT_NAME}"
-        NAMESPACE "${PROJECT_NAME}::"
-        DESTINATION ${CURL_INSTALL_CMAKE_DIR}
-)
+if(CURL_ENABLE_EXPORT_TARGET)
+  install(
+          EXPORT "${TARGETS_EXPORT_NAME}"
+          NAMESPACE "${PROJECT_NAME}::"
+          DESTINATION ${CURL_INSTALL_CMAKE_DIR}
+  )
+endif()
 
 install(
         FILES ${version_config} ${project_config}