MantisBT - CMake |
| View Issue Details |
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| ID | Project | Category | View Status | Date Submitted | Last Update |
| 0011351 | CMake | CMake | public | 2010-10-22 01:58 | 2011-04-04 12:00 |
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| Reporter | Andreas Roth | |
| Assigned To | Bill Hoffman | |
| Priority | normal | Severity | major | Reproducibility | always |
| Status | closed | Resolution | no change required | |
| Platform | | OS | | OS Version | |
| Product Version | CMake-2-8 | |
| Target Version | | Fixed in Version | CMake 2.8.4 | |
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| Summary | 0011351: trycompile does not work on MSVC_IDE with --debug-trycompile |
| Description | I've written a small CMakeLists.txt (attached), which demonstrates the problem that the result of the second try_compile attempt (e.g. by CHECK_FUNCTION_EXISTS) has the same result as before and this causes try_compile to produce wrong results.
Since the CMake temporary project files are not deleted before the next try_compile command, the MSVC assume that the output file is still up-to-date. This could be workarounded if a additional dependency for the output file to the generated project file is introduced (don't know if this is possible. |
| Steps To Reproduce | |
| Additional Information | try to run the attached CMakeLists.txt with the following command line:
cmake --debug-trycompile -G "Visual Studio 9 2008" .
Using CMake version 2.8.2 |
| Tags | No tags attached. |
| Relationships | |
| Attached Files |  CMakeLists.txt (353) 2010-10-22 01:58
https://public.kitware.com/Bug/file/3465/CMakeLists.txt |
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| Issue History |
| Date Modified | Username | Field | Change |
| 2010-10-22 01:58 | Andreas Roth | New Issue | |
| 2010-10-22 01:58 | Andreas Roth | File Added: CMakeLists.txt | |
| 2010-10-22 02:05 | Andreas Roth | Note Added: 0022657 | |
| 2010-10-22 11:05 | Bill Hoffman | Note Added: 0022661 | |
| 2010-12-15 12:06 | David Cole | Assigned To | => Bill Hoffman |
| 2010-12-15 12:06 | David Cole | Status | new => assigned |
| 2010-12-15 12:07 | David Cole | Note Added: 0024171 | |
| 2010-12-15 12:07 | David Cole | Status | assigned => resolved |
| 2010-12-15 12:07 | David Cole | Fixed in Version | => CMake 2.8.4 |
| 2010-12-15 12:07 | David Cole | Resolution | open => no change required |
| 2011-04-04 12:00 | David Cole | Note Added: 0026065 | |
| 2011-04-04 12:00 | David Cole | Status | resolved => closed |
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Notes |
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(0022657)
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Andreas Roth
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2010-10-22 02:05
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The attached CMakeLists.txt produced the following results:
-- Check for working C compiler using: Visual Studio 9 2008
-- Check for working C compiler using: Visual Studio 9 2008 -- works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working CXX compiler using: Visual Studio 9 2008
-- Check for working CXX compiler using: Visual Studio 9 2008 -- works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Looking for printf
-- Looking for printf - found
-- Looking for non_existing_printf
-- Looking for non_existing_printf - found
-- Looking for fprintf
-- Looking for fprintf - found
CMake Error at CMakeLists.txt:10 (MESSAGE):
Found non_existing_printf
And this is the Output in CMakeOutput.log:
1>------ Build started: Project: cmTryCompileExec, Configuration: Debug Win32 ------
1>Compiling...
1>Microsoft (R) 32-bit C/C++ Optimizing Compiler Version 15.00.30729.01 for 80x86
1>Copyright (C) Microsoft Corporation. All rights reserved.
1>cl /Od /D "WIN32" /D "_WINDOWS" /D "CHECK_FUNCTION_EXISTS=printf" /D "_DEBUG" /D "CMAKE_INTDIR=\"Debug\"" /D "_MBCS" /FD /RTC1 /MDd /Fo"cmTryCompileExec.dir\Debug\\" /Fd"C:\work\trac\test\check_function_exists\build-vs\CMakeFiles\CMakeTmp\Debug/cmTryCompileExec.pdb" /W3 /c /Zi /TC /Zm1000
1> "..\..\..\..\..\..\..\cmake\share\cmake-2.8\Modules\CheckFunctionExists.c"
1>CheckFunctionExists.c
1>Linking...
1>Embedding manifest...
1>Build log was saved at "file://c:\work\trac\test\check_function_exists\build-vs\CMakeFiles\CMakeTmp\cmTryCompileExec.dir\Debug\BuildLog.htm" [^]
1>cmTryCompileExec - 0 error(s), 0 warning(s)
========== Build: 1 succeeded, 0 failed, 0 up-to-date, 0 skipped ==========
Determining if the function non_existing_printf exists passed with the following output:
Change Dir: C:/work/trac/test/check_function_exists/build-vs/CMakeFiles/CMakeTmp
Run Build Command:C:\PROGRA~2\MICROS~1.0\Common7\IDE\devenv.com CMAKE_TRY_COMPILE.sln /build Debug /project cmTryCompileExec
Microsoft (R) Visual Studio Version 9.0.30729.1.
Copyright (C) Microsoft Corp. All rights reserved.
========== Build: 0 succeeded, 0 failed, 1 up-to-date, 0 skipped ==========
Determining if the function fprintf exists passed with the following output:
Change Dir: C:/work/trac/test/check_function_exists/build-vs/CMakeFiles/CMakeTmp
Run Build Command:C:\PROGRA~2\MICROS~1.0\Common7\IDE\devenv.com CMAKE_TRY_COMPILE.sln /build Debug /project cmTryCompileExec
Microsoft (R) Visual Studio Version 9.0.30729.1.
Copyright (C) Microsoft Corp. All rights reserved.
========== Build: 0 succeeded, 0 failed, 1 up-to-date, 0 skipped ==========
As you can see the result of the second and third CHECK_FUNCTION_EXISTS command is bogus, since MSVC thinks the output file is up-to-date. |
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(0022661)
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Bill Hoffman
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2010-10-22 11:05
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--debug-trycompile is only useful as a debugging tool, and is know to break things. There is a reason we wipe the directory by default. The usually usage is to setup the project so it will just run one try-compile when you do --debug-trycompile. I usually run cmake once on the whole project. Then delete the cache entry for the try-compile I am debugging, then run cmake again with --debug-trycompile.
I don't think it is worth the time to make --debug-trycompile work all the time. |
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(0024171)
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David Cole
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2010-12-15 12:07
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This is working as intended.
As Bill says in the note, --debug-trycompile is only useful as a debugging tool, and should be used only to debug one try_compile at a time... |
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(0026065)
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David Cole
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2011-04-04 12:00
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Closing resolved issues that have not been updated in more than 3 months. |
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