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VS: Avoid leaking child process output back to IDE (#14266) 

The VS IDE sets the environment variable VS_UNICODE_OUTPUT when
executing build rules in order to tell MS tools to report output through
a back door instead of through stdout/stderr.  Unset this variable so
that CMake can capture or properly redirect all output from processes it
runs even when running inside a VS IDE build environment.

This generalizes the special cases fixed by commit 80d045b0 (When
GetPrerequisites.cmake runs dumpbin while running inside the VS IDE...,
2008-05-01) and commit 44aff73d (ExternalProject: Avoid bleed-through
output when logging, 2011-01-06), so drop special handling of
VS_UNICODE_OUTPUT in those instances.
This commit is contained in:
Brad King 2013-07-10 11:50:49 -04:00
parent a18e9586db
commit 45d2966dcc
3 changed files with 10 additions and 4 deletions
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3
Modules/ExternalProject.cmake
View File

@ -961,7 +961,7 @@ endif()
set(sep ";")
endif()
endforeach()
set(code "set(ENV{VS_UNICODE_OUTPUT} \"\")\n${code}set(command \"${cmd}\")${code_execute_process}")
set(code "${code}set(command \"${cmd}\")${code_execute_process}")
file(WRITE ${stamp_dir}/${name}-${step}-impl.cmake "${code}")
set(command ${CMAKE_COMMAND} "-Dmake=\${make}" "-Dconfig=\${config}" -P ${stamp_dir}/${name}-${step}-impl.cmake)
endif()
@ -971,7 +971,6 @@ endif()
set(logbase ${stamp_dir}/${name}-${step})
file(WRITE ${script} "
${code_cygpath_make}
set(ENV{VS_UNICODE_OUTPUT} \"\")
set(command \"${command}\")
execute_process(
COMMAND \${command}

1
Modules/GetPrerequisites.cmake
View File

@ -635,7 +635,6 @@ function(get_prerequisites target prerequisites_var exclude_system recurse exepa
set(gp_regex_fallback "")
set(gp_regex_cmp_count 1)
set(gp_tool_known 1)
set(ENV{VS_UNICODE_OUTPUT} "") # Block extra output from inside VS IDE.
endif()
if("${gp_tool}" STREQUAL "objdump")

10
Source/cmSystemTools.cxx
View File

@ -1696,6 +1696,7 @@ cmSystemTools::SaveRestoreEnvironment::~SaveRestoreEnvironment()
void cmSystemTools::EnableVSConsoleOutput()
{
#ifdef _WIN32
// Visual Studio 8 2005 (devenv.exe or VCExpress.exe) will not
// display output to the console unless this environment variable is
// set. We need it to capture the output of these build tools.
@ -1703,8 +1704,15 @@ void cmSystemTools::EnableVSConsoleOutput()
// either of these executables where NAME is created with
// CreateNamedPipe. This would bypass the internal buffering of the
// output and allow it to be captured on the fly.
#ifdef _WIN32
cmSystemTools::PutEnv("vsconsoleoutput=1");
# ifdef CMAKE_BUILD_WITH_CMAKE
// VS sets an environment variable to tell MS tools like "cl" to report
// output through a backdoor pipe instead of stdout/stderr. Unset the
// environment variable to close this backdoor for any path of process
// invocations that passes through CMake so we can capture the output.
cmSystemTools::UnsetEnv("VS_UNICODE_OUTPUT");
# endif
#endif
}