Re: [CMake] 32 bits compilation on x64 platform - how to find system libraries
Mathieu Malaterre wrote: On Fri, Dec 4, 2009 at 4:39 PM, Olivier Pierard olivier.pier...@cenaero.be wrote: Dear all, In order to perform 32 bits compilation on 64 bits platform, how can I tell that all find_libraries for which no path is specified to look in /usr/lib instead of /usr/lib64 ? Is there a configuration variable for cmake platform or a default searching directories variable ? This is called CMAKE_FIND_ROOT_PATH See for example: http://gdcm.svn.sf.net/viewvc/gdcm/trunk/CMake/Toolchain-gcc-m32.cmake?view=markup Thank you Mathieu. Problem is that cmake appends '(/usr)/lib64' automatically to the CMAKE_FIND_ROOT_PATH. And since I want to switch between '/usr/lib' and '/usr/lib64', setting the ROOT_PATH to '/usr' or '/' always ends up with libraries found in /usr/lib64. Setting it to '/usr/lib' seems to be ignored because there is nothing in /usr/lib/lib64. Olivier You man need to read: http://www.cmake.org/Wiki/CMake_Cross_Compiling Cheers -- Olivier Pierard CENAERO, Virtual Manufacturing Group Bâtiment EOLE, 1er étage Rue des Frères Wright, 29 B-6041 Gosselies BELGIUM Tel: +32.(0)71.919374 Fax: +32.(0)71.919370 http://www.cenaero.be/ +-+-+- Disclaimer +-+-+- http://www.cenaero.be/disclaimer ___ Powered by www.kitware.com Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html Please keep messages on-topic and check the CMake FAQ at: http://www.cmake.org/Wiki/CMake_FAQ Follow this link to subscribe/unsubscribe: http://www.cmake.org/mailman/listinfo/cmake
Re: [CMake] 32 bits compilation on x64 platform - how to find system libraries
Hi Olivier, I think you need to set the global property FIND_LIBRARY_USE_LIB64_PATHS to OFF. BTW, I disagree with Mathieu that building 32-bit libraries/executables on a 64-bit system is cross-compilation. These binaries can be run without a problem on the host system. So, IMHO, you don't need a toolchain file. The only thing you have to do is instruct gcc/g++ to generate 32-bit objects/binaries, using the -m32 option, and tell CMake to look in lib instead of lib64 by setting the aforementioned property. Hope this helps. Best regards, Marcel Loose. On Mon, 2009-12-07 at 10:09 +0100, Olivier Pierard wrote: Mathieu Malaterre wrote: On Fri, Dec 4, 2009 at 4:39 PM, Olivier Pierard olivier.pier...@cenaero.be wrote: Dear all, In order to perform 32 bits compilation on 64 bits platform, how can I tell that all find_libraries for which no path is specified to look in /usr/lib instead of /usr/lib64 ? Is there a configuration variable for cmake platform or a default searching directories variable ? This is called CMAKE_FIND_ROOT_PATH See for example: http://gdcm.svn.sf.net/viewvc/gdcm/trunk/CMake/Toolchain-gcc-m32.cmake?view=markup Thank you Mathieu. Problem is that cmake appends '(/usr)/lib64' automatically to the CMAKE_FIND_ROOT_PATH. And since I want to switch between '/usr/lib' and '/usr/lib64', setting the ROOT_PATH to '/usr' or '/' always ends up with libraries found in /usr/lib64. Setting it to '/usr/lib' seems to be ignored because there is nothing in /usr/lib/lib64. Olivier You man need to read: http://www.cmake.org/Wiki/CMake_Cross_Compiling Cheers ___ Powered by www.kitware.com Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html Please keep messages on-topic and check the CMake FAQ at: http://www.cmake.org/Wiki/CMake_FAQ Follow this link to subscribe/unsubscribe: http://www.cmake.org/mailman/listinfo/cmake
Re: [CMake] 32 bits compilation on x64 platform - how to find system libraries
On Mon, Dec 7, 2009 at 11:43 AM, Marcel Loose lo...@astron.nl wrote: Hi Olivier, I think you need to set the global property FIND_LIBRARY_USE_LIB64_PATHS to OFF. BTW, I disagree with Mathieu that building 32-bit libraries/executables on a 64-bit system is cross-compilation. These binaries can be run without a problem on the host system. So, IMHO, you don't need a toolchain file. The only thing you have to do is instruct gcc/g++ to generate 32-bit objects/binaries, using the -m32 option, and tell CMake to look in lib instead of lib64 by setting the aforementioned property. There is two things from the top of my head: 1. ia64 which is not x86 compatible 2. You still need a libz/libpng/libjpeg compiled as 32bits on your amd64 system... I think the project needs to be self contained (convenient libs) otherwise to get it compiled using the -m32 trick 2cts -- Mathieu ___ Powered by www.kitware.com Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html Please keep messages on-topic and check the CMake FAQ at: http://www.cmake.org/Wiki/CMake_FAQ Follow this link to subscribe/unsubscribe: http://www.cmake.org/mailman/listinfo/cmake
Re: [CMake] 32 bits compilation on x64 platform - how to find system libraries
On Mon, 2009-12-07 at 13:19 +0100, Mathieu Malaterre wrote: On Mon, Dec 7, 2009 at 11:43 AM, Marcel Loose lo...@astron.nl wrote: Hi Olivier, I think you need to set the global property FIND_LIBRARY_USE_LIB64_PATHS to OFF. BTW, I disagree with Mathieu that building 32-bit libraries/executables on a 64-bit system is cross-compilation. These binaries can be run without a problem on the host system. So, IMHO, you don't need a toolchain file. The only thing you have to do is instruct gcc/g++ to generate 32-bit objects/binaries, using the -m32 option, and tell CMake to look in lib instead of lib64 by setting the aforementioned property. There is two things from the top of my head: 1. ia64 which is not x86 compatible 2. You still need a libz/libpng/libjpeg compiled as 32bits on your amd64 system... I think the project needs to be self contained (convenient libs) otherwise to get it compiled using the -m32 trick 2cts Hi Mathieu Indeed, ia64 is not x86 compatible. I thought that Olivier was using a x86_64 processor. Most 64-bit distros (for x86_64 that is) also provide 32-bit libs/binaries. Best regards, Marcel Loose. ___ Powered by www.kitware.com Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html Please keep messages on-topic and check the CMake FAQ at: http://www.cmake.org/Wiki/CMake_FAQ Follow this link to subscribe/unsubscribe: http://www.cmake.org/mailman/listinfo/cmake
Re: [CMake] 32 bits compilation on x64 platform - how to find system libraries
Marcel Loose wrote:
On Mon, 2009-12-07 at 13:19 +0100, Mathieu Malaterre wrote:
On Mon, Dec 7, 2009 at 11:43 AM, Marcel Loose lo...@astron.nl wrote:
Hi Olivier,
I think you need to set the global property FIND_LIBRARY_USE_LIB64_PATHS
to OFF.
BTW, I disagree with Mathieu that building 32-bit libraries/executables
on a 64-bit system is cross-compilation. These binaries can be run
without a problem on the host system. So, IMHO, you don't need a
toolchain file. The only thing you have to do is instruct gcc/g++ to
generate 32-bit objects/binaries, using the -m32 option, and tell CMake
to look in lib instead of lib64 by setting the aforementioned property.
There is two things from the top of my head:
1. ia64 which is not x86 compatible
2. You still need a libz/libpng/libjpeg compiled as 32bits on your
amd64 system...
I think the project needs to be self contained (convenient libs)
otherwise to get it compiled using the -m32 trick
2cts
Hi Mathieu
Indeed, ia64 is not x86 compatible. I thought that Olivier was using a
x86_64 processor. Most 64-bit distros (for x86_64 that is) also provide
32-bit libs/binaries.
Thanks guys for your insights. I'm effectively working on a x86_64 with
32-bits pre-compiled libs provided by Suse in folder /usr/lib/ while
64-bits libraries are in /usr/lib64/.
Solution proposed by Marcel seemed perfectly suitable for me. So I tried:
set(FIND_LIBRARY_USE_LIB64_PATHS OFF)
...
find_library(FLTK_LIB_TEST NAMES fltk)
message(FIND_LIBRARY_USE_LIB64_PATHS: ${FIND_LIBRARY_USE_LIB64_PATHS})
message(FLTK_LIB_TEST: ${FLTK_LIB_TEST})
And with 'cmake -U *LIB* ..', I get:
FIND_LIBRARY_USE_LIB64_PATHS:OFF
FLTK_LIB_TEST:/usr/lib64/libfltk.a
Of course, libfltk.a is well in both folders /usr/lib/ and /usr/lib64/.
Olivier
Best regards,
Marcel Loose.
--
Olivier Pierard
CENAERO, Virtual Manufacturing Group
Bâtiment EOLE, 1er étage
Rue des Frères Wright, 29
B-6041 Gosselies
BELGIUM
Tel: +32.(0)71.919374
Fax: +32.(0)71.919370
http://www.cenaero.be/
+-+-+- Disclaimer +-+-+-
http://www.cenaero.be/disclaimer
___
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Visit other Kitware open-source projects at
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Re: [CMake] 32 bits compilation on x64 platform - how to find system libraries
On Mon, 2009-12-07 at 14:18 +0100, Olivier Pierard wrote:
Marcel Loose wrote:
On Mon, 2009-12-07 at 13:19 +0100, Mathieu Malaterre wrote:
On Mon, Dec 7, 2009 at 11:43 AM, Marcel Loose lo...@astron.nl wrote:
Hi Olivier,
I think you need to set the global property FIND_LIBRARY_USE_LIB64_PATHS
to OFF.
BTW, I disagree with Mathieu that building 32-bit libraries/executables
on a 64-bit system is cross-compilation. These binaries can be run
without a problem on the host system. So, IMHO, you don't need a
toolchain file. The only thing you have to do is instruct gcc/g++ to
generate 32-bit objects/binaries, using the -m32 option, and tell CMake
to look in lib instead of lib64 by setting the aforementioned property.
There is two things from the top of my head:
1. ia64 which is not x86 compatible
2. You still need a libz/libpng/libjpeg compiled as 32bits on your
amd64 system...
I think the project needs to be self contained (convenient libs)
otherwise to get it compiled using the -m32 trick
2cts
Hi Mathieu
Indeed, ia64 is not x86 compatible. I thought that Olivier was using a
x86_64 processor. Most 64-bit distros (for x86_64 that is) also provide
32-bit libs/binaries.
Thanks guys for your insights. I'm effectively working on a x86_64 with
32-bits pre-compiled libs provided by Suse in folder /usr/lib/ while
64-bits libraries are in /usr/lib64/.
Solution proposed by Marcel seemed perfectly suitable for me. So I tried:
set(FIND_LIBRARY_USE_LIB64_PATHS OFF)
...
find_library(FLTK_LIB_TEST NAMES fltk)
message(FIND_LIBRARY_USE_LIB64_PATHS: ${FIND_LIBRARY_USE_LIB64_PATHS})
message(FLTK_LIB_TEST: ${FLTK_LIB_TEST})
And with 'cmake -U *LIB* ..', I get:
FIND_LIBRARY_USE_LIB64_PATHS:OFF
FLTK_LIB_TEST:/usr/lib64/libfltk.a
Of course, libfltk.a is well in both folders /usr/lib/ and /usr/lib64/.
Olivier
Best regards,
Marcel Loose.
Hi Olivier,
FIND_LIBRARY_USE_LIB64_PATHS is a property. Set it like this:
set_property(GLOBAL PROPERTY FIND_LIBRARY_USE_LIB64_PATHS OFF)
If you do, you'll see that CMake will find /usr/lib/libfltk.a.
Best regards,
Marcel Loose.
___
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[CMake] 32 bits compilation on x64 platform - how to find system libraries
Dear all, In order to perform 32 bits compilation on 64 bits platform, how can I tell that all find_libraries for which no path is specified to look in /usr/lib instead of /usr/lib64 ? Is there a configuration variable for cmake platform or a default searching directories variable ? Thank you, olivier -- Olivier Pierard CENAERO, Virtual Manufacturing Group Bâtiment EOLE, 1er étage Rue des Frères Wright, 29 B-6041 Gosselies BELGIUM Tel: +32.(0)71.919374 Fax: +32.(0)71.919370 http://www.cenaero.be/ +-+-+- Disclaimer +-+-+- http://www.cenaero.be/disclaimer ___ Powered by www.kitware.com Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html Please keep messages on-topic and check the CMake FAQ at: http://www.cmake.org/Wiki/CMake_FAQ Follow this link to subscribe/unsubscribe: http://www.cmake.org/mailman/listinfo/cmake
Re: [CMake] 32 bits compilation on x64 platform - how to find system libraries
On Fri, Dec 4, 2009 at 4:39 PM, Olivier Pierard olivier.pier...@cenaero.be wrote: Dear all, In order to perform 32 bits compilation on 64 bits platform, how can I tell that all find_libraries for which no path is specified to look in /usr/lib instead of /usr/lib64 ? Is there a configuration variable for cmake platform or a default searching directories variable ? This is called CMAKE_FIND_ROOT_PATH See for example: http://gdcm.svn.sf.net/viewvc/gdcm/trunk/CMake/Toolchain-gcc-m32.cmake?view=markup You man need to read: http://www.cmake.org/Wiki/CMake_Cross_Compiling Cheers -- Mathieu ___ Powered by www.kitware.com Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html Please keep messages on-topic and check the CMake FAQ at: http://www.cmake.org/Wiki/CMake_FAQ Follow this link to subscribe/unsubscribe: http://www.cmake.org/mailman/listinfo/cmake
