Merge topic 'cmake-no-args-output'

de7c2882 cmake,ccmake: Produce shorter output on no arguments (#14973)

1 files changed, 16 insertions, 0 deletions

diff --git a/Source/cmakemain.cxx b/Source/cmakemain.cxx
index d8540cb..61b175e 100644
--- a/Source/cmakemain.cxx
+++ b/Source/cmakemain.cxx
@@ -42,6 +42,18 @@ static const char * cmDocumentationUsage[][2] =
   {0,
    "  cmake [options] <path-to-source>\n"
    "  cmake [options] <path-to-existing-build>"},
+  {0,
+   "Specify a source directory to (re-)generate a build system for "
+   "it in the current working directory.  Specify an existing build "
+   "directory to re-generate its build system."},
+  {0,0}
+};
+
+//----------------------------------------------------------------------------
+static const char * cmDocumentationUsageNote[][2] =
+{
+  {0,
+   "Run 'cmake --help' for more information."},
   {0,0}
 };
 
@@ -223,6 +235,10 @@ int do_cmake(int ac, char const* const* av)
     doc.SetName("cmake");
     doc.SetSection("Name",cmDocumentationName);
     doc.SetSection("Usage",cmDocumentationUsage);
+    if ( ac == 1 )
+      {
+      doc.AppendSection("Usage",cmDocumentationUsageNote);
+      }
     doc.AppendSection("Generators",generators);
     doc.PrependSection("Options",cmDocumentationOptions);