CMakePresets.json: Don't warn if no path argument is given

If --preset is specified with no path argument, use the current
directory as the source directory, the preset's binaryDir as the
binary directory, and don't issue the standard warning for no path
specified.

Fixes: #21386

3 files changed, 15 insertions, 0 deletions

diff --git a/Tests/RunCMake/CMakePresets/CMakePresets.json.in b/Tests/RunCMake/CMakePresets/CMakePresets.json.in
index a347120..54e4140 100644
--- a/Tests/RunCMake/CMakePresets/CMakePresets.json.in
+++ b/Tests/RunCMake/CMakePresets/CMakePresets.json.in
@@ -170,6 +170,11 @@
       "binaryDir": "${sourceDir}/build"
     },
     {
+      "name": "GoodNoSourceArg",
+      "generator": "@RunCMake_GENERATOR@",
+      "binaryDir": "${sourceDir}/build"
+    },
+    {
       "name": "GoodInheritanceParentBase",
       "hidden": true,
       "generator": "@RunCMake_GENERATOR@",
diff --git a/Tests/RunCMake/CMakePresets/GoodNoSourceArg.cmake b/Tests/RunCMake/CMakePresets/GoodNoSourceArg.cmake
new file mode 100644
index 0000000..49e7a25
--- /dev/null
+++ b/Tests/RunCMake/CMakePresets/GoodNoSourceArg.cmake
@@ -0,0 +1,3 @@
+include(${CMAKE_CURRENT_LIST_DIR}/TestVariable.cmake)
+
+test_variable(CMAKE_BINARY_DIR "" "${CMAKE_SOURCE_DIR}/build")
diff --git a/Tests/RunCMake/CMakePresets/RunCMakeTest.cmake b/Tests/RunCMake/CMakePresets/RunCMakeTest.cmake
index 2caa66a..1ffda3d 100644
--- a/Tests/RunCMake/CMakePresets/RunCMakeTest.cmake
+++ b/Tests/RunCMake/CMakePresets/RunCMakeTest.cmake
@@ -179,6 +179,13 @@ unset(RunCMake_TEST_NO_CLEAN)
 unset(CMakePresets_SOURCE_ARG)
 unset(RunCMake_TEST_BINARY_DIR)
 unset(CMakePresets_NO_S_ARG)
+set(CMakePresets_NO_SOURCE_ARGS 1)
+set(RunCMake_TEST_BINARY_DIR "${RunCMake_BINARY_DIR}/GoodNoSourceArg")
+set(RunCMake_TEST_NO_CLEAN 1)
+run_cmake_presets(GoodNoSourceArg)
+unset(RunCMake_TEST_NO_CLEAN)
+unset(RunCMake_TEST_BINARY_DIR)
+unset(CMakePresets_NO_SOURCE_ARGS)
 run_cmake_presets(GoodInheritanceParent)
 run_cmake_presets(GoodInheritanceChild)
 run_cmake_presets(GoodInheritanceOverride)