[cmake-developers] Fwd: Bug#691948: cmake: Insists on using non-existent (when cross-compiling) -rdynamic flag

[Bill Hoffman]

FYI


-------- Original Message --------
Subject: Bug#691948: cmake: Insists on using non-existent (when 
cross-compiling) -rdynamic flag
Resent-Date: Wed, 31 Oct 2012 16:09:02 +0000
Resent-From: Sam Morris <sam at robots.org.uk>
Resent-To: debian-bugs-dist at lists.debian.org
Resent-CC: Modestas Vainius <modax at debian.org>
Date: Wed, 31 Oct 2012 16:04:04 +0000
From: Sam Morris <sam at robots.org.uk>
Reply-To: Sam Morris <sam at robots.org.uk>, 691948 at bugs.debian.org
To: Debian Bug Tracking System <submit at bugs.debian.org>

Package: cmake
Version: 2.8.9-1
Severity: important

The -rdynamic flag is being picked up from Platform/Linux-GNU.cmake,
even though CMAKE_SYSTEM_NAME is set to Windows.

Test case:

	#!/bin/bash
	set -ex

	cat > CMakeLists.txt << EOF
	cmake_minimum_required (VERSION 2.8)
	project (test)
	add_executable (test test.c)
	EOF

	cat > main.c << EOF
	int main (void) {}
	EOF

	mkdir build
	cd build
	cmake -G 'Unix Makefiles' -DCMAKE_SYSTEM_NAME=Windows 
-DCMAKE_C_COMPILER=i686-w64-mingw32-gcc 
-DCMAKE_RC_COMPILER=i686-w64-mingw32-windres ..

Output:

	-- The C compiler identification is GNU 4.6.3
	-- The CXX compiler identification is GNU 4.6.3
	-- Check for working C compiler: /usr/bin/i686-w64-mingw32-gcc
	-- Check for working C compiler: /usr/bin/i686-w64-mingw32-gcc -- works
	-- Detecting C compiler ABI info
	-- Detecting C compiler ABI info - done
	-- Check for working CXX compiler: /usr/bin/i686-w64-mingw32-c++
	-- Check for working CXX compiler: /usr/bin/i686-w64-mingw32-c++ -- works
	-- Detecting CXX compiler ABI info
	-- Detecting CXX compiler ABI info - done
	-- Configuring done
	You have changed variables that require your cache to be deleted.
	Configure will be re-run and you may have to reset some variables.
	The following variables have changed:
	CMAKE_RC_COMPILER= i686-w64-mingw32-windres

	-- The C compiler identification is GNU 4.6.3
	-- The CXX compiler identification is GNU 4.6.3
	-- Check for working C compiler: /usr/bin/i686-w64-mingw32-gcc
	-- Check for working C compiler: /usr/bin/i686-w64-mingw32-gcc -- broken
	CMake Error at /usr/share/cmake-2.8/Modules/CMakeTestCCompiler.cmake:52 
(MESSAGE):
	  The C compiler "/usr/bin/i686-w64-mingw32-gcc" is not able to compile a
	  simple test program.

	  It fails with the following output:

	   Change Dir: /tmp/x/build/CMakeFiles/CMakeTmp

	

	  Run Build Command:/usr/bin/make "cmTryCompileExec793991569/fast"

	  /usr/bin/make -f CMakeFiles/cmTryCompileExec793991569.dir/build.make
	  CMakeFiles/cmTryCompileExec793991569.dir/build

	  make[1]: Entering directory `/tmp/x/build/CMakeFiles/CMakeTmp'

	  /usr/bin/cmake -E cmake_progress_report
	  /tmp/x/build/CMakeFiles/CMakeTmp/CMakeFiles 1

	  Building C object
	  CMakeFiles/cmTryCompileExec793991569.dir/testCCompiler.c.obj

	  /usr/bin/i686-w64-mingw32-gcc -o
	  CMakeFiles/cmTryCompileExec793991569.dir/testCCompiler.c.obj -c
	  /tmp/x/build/CMakeFiles/CMakeTmp/testCCompiler.c

	  Linking C executable cmTryCompileExec793991569

	  /usr/bin/cmake -E cmake_link_script
	  CMakeFiles/cmTryCompileExec793991569.dir/link.txt --verbose=1

	  /usr/bin/i686-w64-mingw32-gcc
	  CMakeFiles/cmTryCompileExec793991569.dir/testCCompiler.c.obj -o
	  cmTryCompileExec793991569 -rdynamic

	  i686-w64-mingw32-gcc: error: unrecognized option ‘-rdynamic’

	  make[1]: Leaving directory `/tmp/x/build/CMakeFiles/CMakeTmp'

	  make[1]: *** [cmTryCompileExec793991569] Error 1

	  make: *** [cmTryCompileExec793991569/fast] Error 2

	

	

	  CMake will not be able to correctly generate this project.
	Call Stack (most recent call first):
	  CMakeLists.txt:2 (project)


	-- Configuring incomplete, errors occurred!

-- System Information:
Debian Release: wheezy/sid
   APT prefers testing
   APT policy: (530, 'testing'), (520, 'unstable'), (510, 'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 3.2.0-4-amd64 (SMP w/2 CPU cores)
Locale: LANG=en_GB.utf8, LC_CTYPE=en_GB.utf8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages cmake depends on:
ii  cmake-data         2.8.9-1
ii  libarchive12       3.0.4-2
ii  libc6              2.13-35
ii  libcurl3-gnutls    7.26.0-1
ii  libexpat1          2.1.0-1
ii  libgcc1            1:4.7.1-7
ii  libstdc++6         4.7.1-7
ii  libxmlrpc-core-c3  1.16.33-3.2
ii  procps             1:3.3.3-2
ii  zlib1g             1:1.2.7.dfsg-13

cmake recommends no packages.

Versions of packages cmake suggests:
ii  gcc   4:4.7.1-1
ii  make  3.81-8.2

-- no debconf information