[cmake-developers] [CMake 0014457]: CMAKE_CXX_LIBRARY_ARCHITECTURE variable is not getting populated

[Mantis Bug Tracker]

The following issue has been SUBMITTED. 
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http://www.cmake.org/Bug/view.php?id=14457 
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Reported By:                Zachary Deretsky
Assigned To:                
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Project:                    CMake
Issue ID:                   14457
Category:                   CMake
Reproducibility:            always
Severity:                   major
Priority:                   high
Status:                     new
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Date Submitted:             2013-10-03 03:18 EDT
Last Modified:              2013-10-03 03:18 EDT
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Summary:                    CMAKE_CXX_LIBRARY_ARCHITECTURE variable is not
getting populated
Description: 
The simple test case was created after many iterations by Stephen Kelly:

This CMakeLists.txt
zach at cloud1-12:~/QT/build$ cat ../CMakeLists.txt
cmake_minimum_required(VERSION 2.8)
set(CMAKE_C_COMPILER $ENV{AZ_TOOL_PATH}/bin/gcc)
project(qtgui)
find_library(TEST_Qt5Gui_GL_LIBRARY GL)
message("TEST_Qt5Gui_GL_LIBRARY : ${TEST_Qt5Gui_GL_LIBRARY}")
message("CMAKE_CXX_LIBRARY_ARCHITECTURE ${CMAKE_CXX_LIBRARY_ARCHITECTURE}")

produces this result:
zach at cloud1-12:~/QT/build$ cmake ..
-- The C compiler identification is GNU 4.6.3
-- The CXX compiler identification is GNU 4.6.3
-- Check for working C compiler:
/AZ/x86_64/kernel-3.2.0-25-virtual/glibc-2.15/2013-09-19-12.16.39/bin/gcc
-- Check for working C compiler:
/AZ/x86_64/kernel-3.2.0-25-virtual/glibc-2.15/2013-09-19-12.16.39/bin/gcc --
works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working CXX compiler:
/AZ/x86_64/kernel-3.2.0-25-virtual/glibc-2.15/2013-09-19-12.16.39/bin/c++
-- Check for working CXX compiler:
/AZ/x86_64/kernel-3.2.0-25-virtual/glibc-2.15/2013-09-19-12.16.39/bin/c++ --
works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
TEST_Qt5Gui_GL_LIBRARY : TEST_Qt5Gui_GL_LIBRARY-NOTFOUND
CMAKE_CXX_LIBRARY_ARCHITECTURE 
-- Configuring done
-- Generating done
-- Build files have been written to: /home/zach/QT/build

If I set CMAKE_CXX_LIBRARY_ARCHITECTURE in this CMakeLists.txt

cmake_minimum_required(VERSION 2.8)
set(CMAKE_C_COMPILER $ENV{AZ_TOOL_PATH}/bin/gcc)
set(CMAKE_CXX_LIBRARY_ARCHITECTURE x86_64-linux-gnu)
project(qtgui)
find_library(TEST_Qt5Gui_GL_LIBRARY GL)
message("TEST_Qt5Gui_GL_LIBRARY : ${TEST_Qt5Gui_GL_LIBRARY}")
message("CMAKE_CXX_LIBRARY_ARCHITECTURE ${CMAKE_CXX_LIBRARY_ARCHITECTURE}")

I obtain:

zach at cloud1-12:~/QT/build$ cmake ..
-- The C compiler identification is GNU 4.6.3
-- The CXX compiler identification is GNU 4.6.3
-- Check for working C compiler:
/AZ/x86_64/kernel-3.2.0-25-virtual/glibc-2.15/2013-09-19-12.16.39/bin/gcc
-- Check for working C compiler:
/AZ/x86_64/kernel-3.2.0-25-virtual/glibc-2.15/2013-09-19-12.16.39/bin/gcc --
works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working CXX compiler:
/AZ/x86_64/kernel-3.2.0-25-virtual/glibc-2.15/2013-09-19-12.16.39/bin/c++
-- Check for working CXX compiler:
/AZ/x86_64/kernel-3.2.0-25-virtual/glibc-2.15/2013-09-19-12.16.39/bin/c++ --
works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
TEST_Qt5Gui_GL_LIBRARY : /usr/lib/x86_64-linux-gnu/libGL.so
CMAKE_CXX_LIBRARY_ARCHITECTURE x86_64-linux-gnu
-- Configuring done
-- Generating done
-- Build files have been written to: /home/zach/QT/build



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Issue History 
Date Modified    Username       Field                    Change               
====================================================================== 
2013-10-03 03:18 Zachary DeretskyNew Issue                                    
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