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0012639

CMake

public

2011-12-23 17:42

2011-12-24 14:18

Reporter

Pau Garcia i Quiles

Assigned To

Bill Hoffman

Priority

normal

Severity

block

Reproducibility

always

Status

closed

Resolution

no change required

Platform

MSVC2010SP1

Windows

OS Version

7 SP1 64-bit

Product Version

CMake 2.8.6

Target Version

Fixed in Version

Summary

0012639: CXX_FLAGS is not set unless a project asks for C++

Description

Visual C++ 2010 does not support C99 yet and it seems it will be a
long time before MSVC supports it. For now, the usual work-around is
to build the project as C++.

I'd like to build as C if using mingw, and as C++ if using MSVC.

As Bill and others suggested, I'm using set_source_files_properties(<SRCS> PROPERTIES LANGUAGE CXX).

Problem is the configure step works fine but the generation step fails because CXX_FLAGS have not been set.

Work-around: include a dummy project that just sets "project(dummy CXX)" so that C++ flags are registered.

See this thread for more details:

http://www.cmake.org/pipermail/cmake/2011-December/048222.html [^]

Steps To Reproduce

See attached minimal tests cases:
- fails
- passes (using workaround)

Additional Information

The proper solution is to look for CXX_FLAGS if any source file has a property involving C++ language.

Tags

No tags attached.

Attached Files

cmakecxx.7z [^] (531 bytes) 2011-12-23 17:42

Relationships

Notes
(0028072) Pau Garcia i Quiles (reporter) 2011-12-24 11:50	As Bill pointed in the mailing list, this can be solved by calling "enable_language(CXX)".

Issue History
Date Modified	Username	Field	Change
2011-12-23 17:42	Pau Garcia i Quiles	New Issue
2011-12-23 17:42	Pau Garcia i Quiles	File Added: cmakecxx.7z
2011-12-24 11:50	Pau Garcia i Quiles	Note Added: 0028072
2011-12-24 14:18	Bill Hoffman	Status	new => closed
2011-12-24 14:18	Bill Hoffman	Assigned To	=> Bill Hoffman
2011-12-24 14:18	Bill Hoffman	Resolution	open => no change required