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0008953

CMake

public

2009-04-30 12:44

2016-06-10 14:30

Reporter

Rob Blake

Assigned To

Bill Hoffman

Priority

normal

Severity

minor

Reproducibility

always

Status

closed

Resolution

moved

Platform

OS Version

Product Version

CMake-2-6

Target Version

Fixed in Version

Summary

0008953: LANGUAGE property ignored when set from parent directory.

Description

I used file(GLOB_RECURSE...) to find all *.c files in my project and set their language property to CXX. This was advised to me to get around bug 0008851. When I set the LANGUAGE property on a .c file that lives in a subdirectory, Cmake still thinks the file is a C file. If I call get_property within the subdirectory's makefile, I see LANGUAGE is set to CXX.

I've attached a test case that reproduces this behavior.

Additional Information

My test case has 3 files:
CMakeLists.txt:
cmake_minimum_required(VERSION 2.6)

PROJECT(BuildCToCXXSubdir)
file(GLOB_RECURSE C_FILES ${CMAKE_CURRENT_SOURCE_DIR} *.c)
set_source_files_properties(${C_FILES} PROPERTIES LANGUAGE CXX)

add_subdirectory(subdir)

subdir/CMakeLists.txt:
add_executable(test main.c)

subdir/main.c
#include <iostream>
using namespace std;

int main() {
cout << "Hello World!" << endl;
return 0;
}

When I run cmake and try to compile the above project, I get:
[100%] Building C object subdir/CMakeFiles/test.dir/main.c.o

If I try to access the LANGUAGE property of main.c, I see that it's set to CXX.
If I rewrite the entire project so that it lives in one directory, main.c is built as a CXX file. The bug only seems to appear when you have subdirectories.

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No tags attached.

Attached Files

cmake_cpp_test.tgz [^] (543 bytes) 2009-04-30 12:44

Relationships

Notes
(0017443) Bill Hoffman (manager) 2009-09-14 13:00	Source files are not global, but are directory based... You might want to try another approach. Maybe have your own add_exectuable macro or keep your files in variables, and create a macro, set_lang_cxx that would set the source file properties on a list of sources to CXX.

(0041550) Kitware Robot (administrator) 2016-06-10 14:27	Resolving issue as `moved`. 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
2009-04-30 12:44	Rob Blake	New Issue
2009-04-30 12:44	Rob Blake	File Added: cmake_cpp_test.tgz
2009-09-14 13:00	Bill Hoffman	Note Added: 0017443
2009-09-14 13:00	Bill Hoffman	Status	new => assigned
2009-09-14 13:00	Bill Hoffman	Assigned To	=> Bill Hoffman
2016-06-10 14:27	Kitware Robot	Note Added: 0041550
2016-06-10 14:27	Kitware Robot	Status	assigned => resolved
2016-06-10 14:27	Kitware Robot	Resolution	open => moved
2016-06-10 14:30	Kitware Robot	Status	resolved => closed