cmake: Add options for verbose output to --build mode

While we already support `VERBOSE` environment variable and
`CMAKE_VERBOSE_MAKEFILE` cached variable, add `-v` and `--verbose`
command line options to be able to activate verbose output directly from
CMake's build tool mode command line.

Also make `msbuild` honor the verbosity setting. `xcodebuild` still
doesn't honor the verbosity setting as it will need a policy added
and reworking of cmGlobalGenerator and cmsys to support
multiple command invocation.

1 files changed, 8 insertions, 1 deletions

diff --git a/Source/cmakemain.cxx b/Source/cmakemain.cxx
index 0c25498..0ec2552 100644
--- a/Source/cmakemain.cxx
+++ b/Source/cmakemain.cxx
@@ -68,6 +68,8 @@ static const char* cmDocumentationUsageNote[][2] = {
     "  --clean-first  = Build target 'clean' first, then build.\n"            \
     "                   (To clean only, use --target 'clean'.)\n"             \
     "  --use-stderr   = Ignored.  Behavior is default in CMake >= 3.0.\n"     \
+    "  -v --verbose   = Enable verbose output - if supported - including\n"   \
+    "                   the build commands to be executed. \n"                \
     "  --             = Pass remaining options to the native tool.\n"
 
 static const char* cmDocumentationOptions[][2] = {
@@ -395,6 +397,7 @@ static int do_build(int ac, char const* const* av)
   std::string dir;
   std::vector<std::string> nativeOptions;
   bool clean = false;
+  bool verbose = cmSystemTools::HasEnv("VERBOSE");
   bool hasTarget = false;
 
   enum Doing
@@ -435,6 +438,10 @@ static int do_build(int ac, char const* const* av)
     } else if (strcmp(av[i], "--clean-first") == 0) {
       clean = true;
       doing = DoingNone;
+    } else if ((strcmp(av[i], "--verbose") == 0) ||
+               (strcmp(av[i], "-v") == 0)) {
+      verbose = true;
+      doing = DoingNone;
     } else if (strcmp(av[i], "--use-stderr") == 0) {
       /* tolerate legacy option */
     } else if (strcmp(av[i], "--") == 0) {
@@ -493,7 +500,7 @@ static int do_build(int ac, char const* const* av)
   cmake cm(cmake::RoleInternal, cmState::Unknown);
   cmSystemTools::SetMessageCallback(cmakemainMessageCallback, &cm);
   cm.SetProgressCallback(cmakemainProgressCallback, &cm);
-  return cm.Build(jobs, dir, target, config, nativeOptions, clean);
+  return cm.Build(jobs, dir, target, config, nativeOptions, clean, verbose);
 #endif
 }