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Date Submitted

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0015913

CMake

public

2016-01-12 16:29

2016-06-10 14:21

Reporter

Gregory M. Baumgardner

Assigned To

Priority

normal

Severity

minor

Reproducibility

always

Status

closed

Resolution

no change required

Platform

CYGWIN-2.3.1(0.291/5/3)

Windows

OS Version

Product Version

CMake 3.3.2

Target Version

Fixed in Version

Summary

0015913: CMAKE_SYSTEM_NAME is not being set on cmake 3.3.2 Cygwin

Description

I installed cmake 3.3.2 directly from the Cygwin distribution, but for some reason I cannot get the if(CYGWIN) to work properly. It is probably related to the fact that the the CMAKE_SYSTEM_NAME is not being set. I have confirmed this with a quick test, but have no idea what is wrong or why I cannot detect Cygwin. The --system-information shows that the CMAKE_SYSTEM_NAME=CYGWIN, but it is not being set the same when I run cmake against my CMakeLists.txt file. It would be nice to have this feature worked as advertised.

Steps To Reproduce

Run "cmake ." using supplied CMakeLists.txt file. Output is:

-- Hello World
-- Cygwin is and CMAKE_COMPILER_IS_CYGWIN = and CMAKE_SYSTEM_NAME =

I expected that it should read:

-- Hello World
-- Cygwin is 1 and CMAKE_COMPILER_IS_CYGWIN = 1 and CMAKE_SYSTEM_NAME = CYGWIN

Additional Information

Avoid ctest truncation of output: CTEST_FULL_OUTPUT
========================================================
=== MAIN VARIABLES
========================================================
CMAKE_STATIC_LIBRARY_PREFIX == "lib"
CMAKE_STATIC_LIBRARY_SUFFIX == ".a"
CMAKE_SHARED_LIBRARY_PREFIX == "cyg"
CMAKE_SHARED_LIBRARY_SUFFIX == ".dll"
CMAKE_SHARED_MODULE_PREFIX == "cyg"
CMAKE_SHARED_MODULE_SUFFIX == ".dll"

CMAKE_DL_LIBS == "dl"
CMAKE_LIBRARY_PATH_FLAG == "-L"
CMAKE_LINK_LIBRARY_FLAG == "-l"
CMAKE_SKIP_RPATH == "NO"
CMAKE_SYSTEM_INFO_FILE == "Platform/CYGWIN"
CMAKE_SYSTEM_NAME == "CYGWIN"
CMAKE_SYSTEM == "CYGWIN-2.3.1(0.291/5/3)"
CMAKE_CXX_COMPILER == "/usr/bin/c++.exe"
CMAKE_C_COMPILER == "/usr/bin/cc"
CMAKE_COMPILER_IS_GNUCC == "1"
CMAKE_COMPILER_IS_GNUCXX == "1"

....
CMAKE_COMPILER_IS_CYGWIN "1"
CYGWIN "1"

Tags

No tags attached.

Attached Files

CMakeLists.txt [^] (244 bytes) 2016-01-12 16:29 [Show Content] [Hide Content]

cmake_minimum_required(VERSION 2.8.12)

message(STATUS "Hello World")

message(STATUS "Cygwin is ${CYGWIN} and CMAKE_COMPILER_IS_CYGWIN = ${CYGWIN_COMPILER_IS_CYGWIN} and CMAKE_SYSTEM_NAME = ${CMAKE_SYSTEM_NAME}")

project(TEST LANGUAGES NONE)

Relationships

Notes
(0040212) Nils Gladitz (developer) 2016-01-12 17:43	Try moving your project() call before message(). project() is what initializes platform and compiler information.

(0040215) Gregory M. Baumgardner (reporter) 2016-01-13 08:52	Ok. I was unaware of that. It makes sense now. This issue can be closed.

(0041292) Kitware Robot (administrator) 2016-06-10 14:21	This issue tracker is no longer used. Further discussion of this issue may take place in the current CMake Issues page linked in the banner at the top of this page.

Issue History
Date Modified	Username	Field	Change
2016-01-12 16:29	Gregory M. Baumgardner	New Issue
2016-01-12 16:29	Gregory M. Baumgardner	File Added: CMakeLists.txt
2016-01-12 17:43	Nils Gladitz	Note Added: 0040212
2016-01-13 08:52	Gregory M. Baumgardner	Note Added: 0040215
2016-01-13 09:13	Brad King	Status	new => resolved
2016-01-13 09:13	Brad King	Resolution	open => no change required
2016-06-10 14:21	Kitware Robot	Note Added: 0041292
2016-06-10 14:21	Kitware Robot	Status	resolved => closed