[CMake] OS X Fortran flags (Bill Somerville)
Zaak Beekman
zbeekman at gmail.com
Fri Oct 24 13:39:37 EDT 2014
Hi Bill,
I feel your pain. I suspect a CMake bug is hidden away somewhere causing
this behavior, and have struggled with this quite a lot.
I *think* explicitly passing the relevant option to the linker fixes this,
although I have some other CMake/Fortran/Mac hackery happening in my
CMakeLists.txt and I can't remember the reasoning for everything. The
following is wrapped in something like if(APPLE), and annoyingly, a
slightly different form needs to be used if passing this flag to the linker
when using the Intel compilers:
if ( CMAKE_OSX_DEPLOYMENT_TARGET )
set ( CMAKE_EXE_LINKER_FLAGS
"${CMAKE_EXE_LINKER_FLAGS}
-mmacosx-version-min=${CMAKE_OSX_DEPLOYMENT_TARGET}" )
endif ( CMAKE_OSX_DEPLOYMENT_TARGET )
I *suspect* this work around will fix your problem.
Some more details:
I can't seem to follow my reasoning for exactly what hacks fixed what
problems; essentially I wanted to build a redistributable binary for Mac
using Fortran sources. Some of my hackery might be to allow for statically
linked builds, but here is my basic approach. First the main CMakeLists.txt
file:
cmake_minimum_required ( VERSION 2.8.11 FATAL_ERROR )
include ( checkOutOfSource.cmake )
include ( configurePlatform.cmake )
include ( configureBuilds.cmake )
enable_language ( C )
enable_language ( Fortran )
include ( compiler-specific-settings.cmake )
project ( myproj NONE )
add_subdirectory( ${CMAKE_CURRENT_SOURCE_DIR}/src )
Have found that the order of setting certain variables can make a big
difference, and that some are better set before the project command or
between the enable_language and project command. The other relevant
commands are in configurePlatform.cmake and
compiler-specific-settings.cmake.
In configurePlatform.cmake I have:
if ( APPLE )
set ( CMAKE_OSX_DEPLOYMENT_TARGET "10.6"
CACHE STRING "Oldest OS X version to compile and link for." )
set_property ( CACHE CMAKE_OSX_DEPLOYMENT_TARGET PROPERTY STRINGS
"10.6" "10.7" "10.8" "10.9" )
...
and then in compiler specific settings I have the modification to the
linker flags given above.
I hope this fixes your issue, and that someone with more intimate knowledge
of CMake can work on Fortran support using different compilers on Mac.
Izaak Beekman
===================================
(301)244-9367
Princeton University Doctoral Candidate
Mechanical and Aerospace Engineering
ibeekman at princeton.edu
UMD-CP Visiting Graduate Student
Aerospace Engineering
ibeekman at umiacs.umd.edu
ibeekman at umd.edu
On Fri, Oct 24, 2014 at 12:45 PM, <cmake-request at cmake.org> wrote:
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> Today's Topics:
>
> 1. Re: Fwd: Error in compiling OKULAR using CMAKE
> (lfdominguez at estudiantes.uci.cu)
> 2. Re: The new cmake.org web site (Robert Maynard)
> 3. OS X Fortran flags (Bill Somerville)
> 4. Re: OS X Fortran flags (Bill Somerville)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Fri, 24 Oct 2014 02:29:51 +0000
> From: lfdominguez at estudiantes.uci.cu
> To: cmake at cmake.org
> Subject: Re: [CMake] Fwd: Error in compiling OKULAR using CMAKE
> Message-ID: <2905201.UkD8Wta6Ld at envy>
> Content-Type: text/plain; charset="iso-8859-1"
>
> On Friday 24 October 2014 11:49:55 AM Sahil Sehgal wrote:
>
>
>
>
> Hello,
>
>
>
> I was trying to build Okular (KDE application) in IDE (QT-creator and
> Kdevelop
> both). I did the following steps:
>
>
> 1.) clonned the source code of Okular
>
>
> 2.) loaded the source code in IDE
>
>
> 3.) click on the build command.
>
>
>
> I got the following error
>
>
>
> */home/sahil/my/New Folder/prog/okular/build> /usr/bin/cmake -
> DCMAKE_INSTALL_PREFIX=/usr/local -DCMAKE_BUILD_TYPE=Debug
> '/home/sahil/my/New Folder/prog/okular/'-- Found Qt-Version 5.2.1 (using
> /usr/bin/qmake)CMake Error: The following variables are used in this
> project, but
> they are set to NOTFOUND.Please set them or make sure they are set and
> tested
> correctly in the CMake files:QT_QT_INCLUDE_DIR used as include directory
> in
> directory /home/sahil/my/New Folder/prog/okular/build/CMakeFiles/CMakeTmp
>
> CMake Error: Internal CMake error, TryCompile configure of cmake failed
>
> CMake Error at
> /usr/share/kde4/apps/cmake/modules/FindKDE4Internal.cmake:1316 (message):
> Unable to compile a basic Qt application. Qt has not been found
> correctly.Call
> Stack (most recent call first):
> /usr/share/cmake-2.8/Modules/FindKDE4.cmake:95
> (find_package) CMakeLists.txt:3 (find_package)
>
>
> -- Configuring incomplete, errors occurred!See also "/home/sahil/my/New
> Folder/prog/okular/build/CMakeFiles/CMakeOutput.log".See also
> "/home/sahil/my/New Folder/prog/okular/build/CMakeFiles/CMakeError.log".***
> Failure: Exit code 1 ***
>
> *
> Please suggest the possible solution
>
>
>
> Regards
>
>
> Sahil Sehgal
>
>
>
>
>
>
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> ------------------------------
>
> Message: 2
> Date: Fri, 24 Oct 2014 08:01:52 -0400
> From: Robert Maynard <robert.maynard at kitware.com>
> To: David Cole <DLRdave at aol.com>
> Cc: "cmake at cmake.org" <cmake at cmake.org>
> Subject: Re: [CMake] The new cmake.org web site
> Message-ID:
> <
> CAFzjYVooSBGPTk-xnJTVkhMwmvaRWY+an3x63+K9-qhFoycMgw at mail.gmail.com>
> Content-Type: text/plain; charset="utf-8"
>
> Thanks for finding the broken link, I have correct the url and everything
> should be working now.
>
> On Thu, Oct 23, 2014 at 8:23 PM, David Cole via CMake <cmake at cmake.org>
> wrote:
>
> > The new CMake web site looks fantastic! Even on my phone... Kudos to
> > everybody involved in making it look pretty after all these years of,
> > well, ahem, looking slightly less pretty.......
> >
> > However, on this page:
> > http://www.cmake.org/developer-resources/
> >
> > The "Dashboard" icon is a broken link. 404.
> >
> > But, besides that, nice work!
> >
> >
> > Cheers,
> > David C.
> > --
> >
> > Powered by www.kitware.com
> >
> > Please keep messages on-topic and check the CMake FAQ at:
> > http://www.cmake.org/Wiki/CMake_FAQ
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> ------------------------------
>
> Message: 3
> Date: Fri, 24 Oct 2014 16:31:49 +0100
> From: Bill Somerville <bill at classdesign.com>
> To: CMake ML <cmake at cmake.org>
> Subject: [CMake] OS X Fortran flags
> Message-ID: <544A70E5.3040807 at classdesign.com>
> Content-Type: text/plain; charset=utf-8; format=flowed
>
> Hi,
>
> I am building some Fortran sources and on Mac I want to make the
> resulting executable portable back to 10.7.
>
> So I have:
>
> if (APPLE)
> set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -stdlib=libc++")
> set (CMAKE_OSX_DEPLOYMENT_TARGET 10.7) # Earliest version we can
> support with C++11 & libc++
> set (CMAKE_OSX_SYSROOT
>
> /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.9.sdk)
> endif (APPLE)
>
> in my CMakeLists.txt.
>
> I am building on a 10.8 system with the 10.9 SDK installed.
>
> This all works as expected with the C and C++ sources in the project but
> the Fortran compiles are not being passed the relevant options:
>
> -isysroot
>
> /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.9.sdk
> -mmacosx_version_min=10.7
>
> The Fortran compiler is the MacPorts gcc49 itself built from sources
> using the same options so that the distributable libraries reference the
> correct system library function versions.
>
> So what am I missing? A brief scan of the CMake sources looks like it
> should be doing this right for GNU compilers as the compiler tests
> should check for those options being supported and supply them.
>
> Do I have to add these options to the FFLAGS in my CMakeLists.txt?
>
> Regards
> Bill.
>
>
> ------------------------------
>
> Message: 4
> Date: Fri, 24 Oct 2014 17:44:56 +0100
> From: Bill Somerville <bill at classdesign.com>
> To: cmake at cmake.org
> Subject: Re: [CMake] OS X Fortran flags
> Message-ID: <544A8208.7030602 at classdesign.com>
> Content-Type: text/plain; charset=windows-1252; format=flowed
>
> A small correction:
>
> On 24/10/2014 16:31, Bill Somerville wrote:
> > Hi,
> >
> > I am building some Fortran sources and on Mac I want to make the
> > resulting executable portable back to 10.7.
> >
> > So I have:
> >
> > if (APPLE)
> > set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -stdlib=libc++")
> > set (CMAKE_OSX_DEPLOYMENT_TARGET 10.7) # Earliest version we can
> > support with C++11 & libc++
> > set (CMAKE_OSX_SYSROOT
> >
> /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.9.sdk)
> > endif (APPLE)
> >
> > in my CMakeLists.txt.
> >
> > I am building on a 10.8 system with the 10.9 SDK installed.
> >
> > This all works as expected with the C and C++ sources in the project
> > but the Fortran compiles are not being passed the relevant options:
> >
> > -isysroot
> >
> /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.9.sdk
> > -mmacosx_version_min=10.7
> -mmacosx-version-min=10.7
> >
> > The Fortran compiler is the MacPorts gcc49 itself built from sources
> > using the same options so that the distributable libraries reference
> > the correct system library function versions.
> >
> > So what am I missing? A brief scan of the CMake sources looks like it
> > should be doing this right for GNU compilers as the compiler tests
> > should check for those options being supported and supply them.
> >
> > Do I have to add these options to the FFLAGS in my CMakeLists.txt?
> >
> > Regards
> > Bill.
>
>
>
> ------------------------------
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