tweaked fetch content code

- see https://discourse.cmake.org/t/prevent-fetchcontent-makeavailable for details

Author: ypujante

README.md

@@ -47,7 +47,7 @@ Check the [Quickstart](https://jamba.dev/quickstart/) section to getting started
 Latest Release
 --------------
 
-7.1.2 | 2024-11-26 | VST SDK 3.7.12+
+7.1.3 | 2024-12-01 | VST SDK 3.7.12+
 
 [Release notes (local)](RELEASE.md)
 

RELEASE.md

@@ -3,6 +3,10 @@ Release Notes {#release-notes}
 
 Check the [Requirements](https://jamba.dev/requirements/) documentation for information about which VST3 SDK Jamba supports and how to get it.
 
+## [7.1.3 | 2024-12-01](https://github.com/pongasoft/jamba/tree/v7.1.3)
+
+* Use `FetchContent_Populate`/`FetchContent_MakeAvailable` with `SOURCE_SUBDIR` option (see [CMake discussion](https://discourse.cmake.org/t/prevent-fetchcontent-makeavailable-to-execute-cmakelists-txt))
+
 ## [7.1.2 | 2024-11-26](https://github.com/pongasoft/jamba/tree/v7.1.2)
 
 * Fixes issues with some DAWs on Windows when using the bundle format

blank-plugin/fetch_jamba.cmake

@@ -9,35 +9,33 @@ set(JAMBA_DOWNLOAD_URL_HASH "[-jamba_download_url_hash-]" CACHE STRING "Jamba do
 
 if(JAMBA_ROOT_DIR)
   message(STATUS "Using jamba from local ${JAMBA_ROOT_DIR}")
-  FetchContent_Populate(jamba
-      QUIET
-      SOURCE_DIR        "${JAMBA_ROOT_DIR}"
-      BINARY_DIR        "${CMAKE_BINARY_DIR}/jamba-build"
+  FetchContent_Declare(jamba
+      SOURCE_DIR    "${JAMBA_ROOT_DIR}"
+      SOURCE_SUBDIR "do_not_make_available" # invalid folder to not execute jamba/CMakeLists.txt
   )
 else()
   if(JAMBA_DOWNLOAD_URL STREQUAL "" OR JAMBA_DOWNLOAD_URL_HASH STREQUAL "")
     message(STATUS "Fetching jamba from ${JAMBA_GIT_REPO}/tree/${JAMBA_GIT_TAG}")
-    FetchContent_Populate(jamba
-        QUIET
+    FetchContent_Declare(jamba
         GIT_REPOSITORY    ${JAMBA_GIT_REPO}
         GIT_TAG           ${JAMBA_GIT_TAG}
         GIT_CONFIG        advice.detachedHead=false
         GIT_SHALLOW       true
         SOURCE_DIR        "${CMAKE_BINARY_DIR}/jamba"
-        BINARY_DIR        "${CMAKE_BINARY_DIR}/jamba-build"
+        SOURCE_SUBDIR     "do_not_make_available"
     )
   else()
     message(STATUS "Fetching jamba from ${JAMBA_DOWNLOAD_URL}")
-    FetchContent_Populate(jamba
-        QUIET
+    FetchContent_Declare(jamba
         URL                        "${JAMBA_DOWNLOAD_URL}"
         URL_HASH                   "${JAMBA_DOWNLOAD_URL_HASH}"
         DOWNLOAD_EXTRACT_TIMESTAMP true
         SOURCE_DIR                 "${CMAKE_BINARY_DIR}/jamba"
-        BINARY_DIR                 "${CMAKE_BINARY_DIR}/jamba-build"
+        SOURCE_SUBDIR              "do_not_make_available"
     )
   endif()
 endif()
 
-set(JAMBA_ROOT_DIR ${jamba_SOURCE_DIR})
+FetchContent_MakeAvailable(jamba)
 
+set(JAMBA_ROOT_DIR ${jamba_SOURCE_DIR})

cmake/JambaFetchContent.cmake

@@ -18,6 +18,7 @@ cmake_minimum_required(VERSION 3.19)
 
 include(FetchContent)
 
+# Note that this function only fetches the content and does NOT make it available
 function(jamba_fetch_content)
   set(oneValueArgs NAME GIT_REPO GIT_TAG DOWNLOAD_URL DOWNLOAD_URL_HASH ROOT_DIR)
 
@@ -54,36 +55,38 @@ function(jamba_fetch_content)
 
   if(ARG_ROOT_DIR)
     message(STATUS "Using ${ARG_NAME} from local ${ARG_ROOT_DIR}")
-    FetchContent_Populate(${ARG_NAME}
-        QUIET
-        SOURCE_DIR        "${ARG_ROOT_DIR}"
-        BINARY_DIR        "${CMAKE_CURRENT_BINARY_DIR}/${ARG_NAME}-build"
+    FetchContent_Declare(${ARG_NAME}
+        SOURCE_DIR       "${ARG_ROOT_DIR}"
+        BINARY_DIR       "${CMAKE_CURRENT_BINARY_DIR}/${ARG_NAME}-build"
+        SOURCE_SUBDIR    "do_not_make_available" # invalid folder to not execute CMakeLists.txt
     )
   else()
     if(ARG_DOWNLOAD_URL)
       message(STATUS "Fetching ${ARG_NAME} from ${ARG_DOWNLOAD_URL}")
-      FetchContent_Populate(          ${ARG_NAME}
-          QUIET
+      FetchContent_Declare(          ${ARG_NAME}
           URL                        "${ARG_DOWNLOAD_URL}"
           URL_HASH                   "${ARG_DOWNLOAD_URL_HASH}"
           SOURCE_DIR                 "${CMAKE_CURRENT_BINARY_DIR}/${ARG_NAME}-src"
           BINARY_DIR                 "${CMAKE_CURRENT_BINARY_DIR}/${ARG_NAME}-build"
           DOWNLOAD_EXTRACT_TIMESTAMP true
+          SOURCE_SUBDIR              "do_not_make_available"
       )
     else()
       message(STATUS "Fetching ${ARG_NAME} from ${ARG_GIT_REPO}/tree/${ARG_GIT_TAG}")
-      FetchContent_Populate(${ARG_NAME}
-          QUIET
-          GIT_REPOSITORY    ${ARG_GIT_REPO}
-          GIT_TAG           ${ARG_GIT_TAG}
-          GIT_CONFIG        advice.detachedHead=false
-          GIT_SHALLOW       true
-          SOURCE_DIR        "${CMAKE_CURRENT_BINARY_DIR}/${ARG_NAME}-src"
-          BINARY_DIR        "${CMAKE_CURRENT_BINARY_DIR}/${ARG_NAME}-build"
+      FetchContent_Declare(${ARG_NAME}
+          GIT_REPOSITORY   ${ARG_GIT_REPO}
+          GIT_TAG          ${ARG_GIT_TAG}
+          GIT_CONFIG       advice.detachedHead=false
+          GIT_SHALLOW      true
+          SOURCE_DIR       "${CMAKE_CURRENT_BINARY_DIR}/${ARG_NAME}-src"
+          BINARY_DIR       "${CMAKE_CURRENT_BINARY_DIR}/${ARG_NAME}-build"
+          SOURCE_SUBDIR    "do_not_make_available"
       )
     endif()
   endif()
 
+  FetchContent_MakeAvailable(${ARG_NAME})
+
   set(${ARG_NAME}_ROOT_DIR "${${ARG_NAME}_SOURCE_DIR}" PARENT_SCOPE)
   set(${ARG_NAME}_SOURCE_DIR "${${ARG_NAME}_SOURCE_DIR}" PARENT_SCOPE)
   set(${ARG_NAME}_BINARY_DIR "${${ARG_NAME}_BINARY_DIR}" PARENT_SCOPE)

cmake/JambaFetchVST3.cmake

@@ -84,7 +84,7 @@ if(EXISTS "${VST3_SDK_ROOT}/${VSTSDK3_KNOWN_FILE}")
     set(vst3sdk_SOURCE_DIR "${VST3_SDK_ROOT}")
   endif()
 elseif(JAMBA_DOWNLOAD_VSTSDK)
-  jamba_fetch_content(NAME vst3sdk GIT_REPO "${JAMBA_VST3SDK_GIT_REPO}" GIT_TAG "${JAMBA_VST3SDK_GIT_TAG}")
+jamba_fetch_content(NAME vst3sdk GIT_REPO "${JAMBA_VST3SDK_GIT_REPO}" GIT_TAG "${JAMBA_VST3SDK_GIT_TAG}")
   if(EXISTS "${JAMBA_VST3SDK_PATCH_DIR}")
     internal_jamba_patch_vst3sdk("${JAMBA_VST3SDK_PATCH_DIR}" "${vst3sdk_SOURCE_DIR}")
   else()

jamba.cmake

@@ -46,7 +46,7 @@ endif()
 #------------------------------------------------------------------------
 set(JAMBA_MAJOR_VERSION 7)
 set(JAMBA_MINOR_VERSION 1)
-set(JAMBA_PATCH_VERSION 2)
+set(JAMBA_PATCH_VERSION 3)
 execute_process(COMMAND git describe --long --dirty --abbrev=10 --tags
     RESULT_VARIABLE result
     OUTPUT_VARIABLE JAMBA_GIT_VERSION