c++ - Fail to build shared library using CMake and CUDA -


i'm trying build shared library containing cuda code using cmake. i'm using package findcuda. have problem in linking phase:

linking cxx shared library shlibcuda.so /usr/bin/c++  -fpic -std=c++0x -fopenmp -o3 -dndebug   -shared -wl,-soname,shlibcuda.so -o shlibcuda.so cmakefiles/shlibcuda.dir/src/cuda/./shlibcuda_generated_calibrate.cu.o cmakefiles/shlibcuda.dir/src/cuda/./shlibcuda_generated_cleaning.cu.o cmakefiles/shlibcuda.dir/./shlibcuda_intermediate_link.o  -l/usr/local/cuda-6.5/lib64/libcudart.so -wl,-rpath,/mylibs/lib:/usr/local/cuda-6.5/lib64  /usr/bin/ld: cmakefiles/shlibcuda.dir/./shlibcuda_intermediate_link.o: relocation r_x86_64_32s against `__nv_module_id' can not used when making shared object; recompile -fpic cmakefiles/shlibcuda.dir/./shlibscuda_intermediate_link.o: error adding symbols: bad value

from this question , answer found maybe problem 1 of object file linked not compiled -fpic option. added -xcompiler -fpic cuda_nvcc_flags.

in fact, can see in line below, when build process reaches building of called intermediate link file, no -fpic passed compiler:

[100%] building nvcc intermediate link file cmakefiles/shlibcuda.dir/./shlibcuda_intermediate_link.o /usr/local/cuda-6.5/bin/nvcc -m64 -ccbin "/usr/bin/cc" -dlink cmakefiles/shlibcuda.dir/src/cuda/./shlibcuda_generated_calibrate.cu.o cmakefiles/shlibcuda.dir/src/cuda/./shlibcuda_generated_cleaning.cu.o  -o cmakefiles/shlibcuda.dir/./shlibcuda_intermediate_link.o

my nvcc flags following:

#cuda include directories find_package(cuda required) set(cuda_nvcc_flags ${cuda_nvcc_flags}; -xcompiler -fpic; -o3; -gencode arch=compute_32,code=sm_32; -ccbin /usr/bin/g++ -std=c++11)

what doing wrong? if problem lack of -fpic, how pass option when compiling intermediate link file?

i'm using cuda 6.5 , i'm passing -ccbin /usr/bin/g++ -std=c++11 option because need use c++11 in host code.

my cmake: 2.8.12.2.

it cmake problem resolved this patch (included since cmake 3.2.0). -fpic flag passed when compiling intermediate link file.

however problem arised, since in configuration have pass explicitly host compiler:

[100%] building nvcc intermediate link file cmakefiles/shlibcuda.dir/./shlibcuda_intermediate_link.o     /usr/local/cuda-6.5/bin/nvcc -xcompiler -fpic -o3 -gencode arch=compute_32,code=sm_32 -ccbin /usr/bin/g++ -std=c++11 -m64 -ccbin "/usr/bin/gcc-4.8" -dlink cmakefiles/shlibcuda.dir/src/cuda/./shlibcuda_generated_calibrate.cu.o cmakefiles/shlibcuda.dir/src/cuda/./shlibcuda_generated_cleaning.cu.o  -o cmakefiles/shlibcuda.dir/./shlibcuda_intermediate_link.o nvcc fatal   : redefinition of argument 'compiler-bindir'

because -ccbin /usr/bin/g++ -std=c++11 , -ccbin "/usr/bin/gcc-4.8" both present.

this known cmake open issue n. 0013674. discussion still ongoing applying patch attached in thread (it removes check on "-ccbin" in cuda_nvcc_flags) problem solved.


Comments

Post a Comment

Popular posts from this blog

Magento/PHP - Get phones on all members in a customer group -

i working on custom magento extension. working around adminhtml part , i've created custom form there. here form code: <?php class vivasindustries_smsnotification_block_adminhtml_sms_sendmass_edit_form extends mage_adminhtml_block_widget_form { public function _preparelayout() { $extensionpath = mage::getmoduledir('js', 'vivasindustries_smsnotification'); $head = $this->getlayout()->getblock('head'); $head->addjs('jquery.js'); $head->addjs('vivas.js'); return parent::_preparelayout(); } protected function _prepareform() { $form = new varien_data_form(array( 'id' => 'edit_form', 'action' => $this->geturl('*/*/save', array('id' => $this->getrequest()->get...
Read more

php - Bypass Geo Redirect for specific directories -

i'm trying bypass redirect specific url within site. wondering if might able help. the code below code use, original urls replaces example.com i'd able access http://example.com/admin without redirect occuring. is there way this, , there way using own ip? function country_geo_redirect() { $country = getenv('http_geoip_country_code'); if ($country == "us" ) { wp_redirect("http://usa.example.com/"); exit; } else if ($country == "gb" ) { wp_redirect("http://uk.example.com/"); exit; } } add_action('init', 'country_geo_redirect'); you can bypass redirection code if server found ip address. if ip address == <my ip address> ' nothing here else country_georedirect() end if
Read more

php - .htaccess mod_rewrite for dynamic url which has domain names -

i want convert url ex:( example.com/link.php?url=facebook.com ) ( example.com/facebook.com.php ) how can using .htaccess. or there other process make job easier ? i tried adding script .htaccess file options +followsymlinks rewriteengine on rewriterule url-(.*)\.htm$ link.php?url=$1 but converting url adding "url-" ( example.com/url-facebook.com.php ) i want remove "url-" , want make ( example.com/facebook.com.php ) rewriteengine on rewritecond %{the_request} ^get.*link\.php\?url\= [nc] rewritecond %{request_uri} !/system/.* [nc] rewriterule (.*?)link\.php\?url\=/*(.*) /$1$2 [r=301,ne,l] not sure how above work edit of used use remove index.php url
Read more