If extension has no sources then there will be no output. Fixes bdist_rpm command.
If extension has no sources then there will be no output. Fixes bdist_rpm command.

numpy/numpy,ahaldane/numpy,sigma-random/numpy,pdebuyl/numpy,SunghanKim/numpy,anntzer/numpy,cowlicks/numpy,cowlicks/numpy,rgommers/numpy,dimasad/numpy,astrofrog/numpy,ewmoore/numpy,kirillzhuravlev/numpy,Anwesh43/numpy,mattip/numpy,solarjoe/numpy,solarjoe/numpy,drasmuss/numpy,ogrisel/numpy,sinhrks/numpy,mortada/numpy,matthew-brett/numpy,madphysicist/numpy,githubmlai/numpy,dwf/numpy,tdsmith/numpy,gfyoung/numpy,dato-code/numpy,astrofrog/numpy,rajathkumarmp/numpy,matthew-brett/numpy,embray/numpy,rudimeier/numpy,kirillzhuravlev/numpy,njase/numpy,joferkington/numpy,chiffa/numpy,ChanderG/numpy,musically-ut/numpy,jankoslavic/numpy,stuarteberg/numpy,numpy/numpy,CMartelLML/numpy,endolith/numpy,CMartelLML/numpy,utke1/numpy,bringingheavendown/numpy,mortada/numpy,pelson/numpy,sinhrks/numpy,nbeaver/numpy,trankmichael/numpy,b-carter/numpy,jakirkham/numpy,ChanderG/numpy,brandon-rhodes/numpy,mindw/numpy,ChristopherHogan/numpy,MaPePeR/numpy,abalkin/numpy,maniteja123/numpy,ViralLeadership/numpy,mattip/numpy,shoyer/numpy,pdebuyl/numpy,pyparallel/numpy,immerrr/numpy,mhvk/numpy,WarrenWeckesser/numpy,embray/numpy,ahaldane/numpy,utke1/numpy,has2k1/numpy,behzadnouri/numpy,ViralLeadership/numpy,musically-ut/numpy,numpy/numpy-refactor,WillieMaddox/numpy,yiakwy/numpy,Anwesh43/numpy,jankoslavic/numpy,jschueller/numpy,ssanderson/numpy,yiakwy/numpy,empeeu/numpy,ChristopherHogan/numpy,Srisai85/numpy,mingwpy/numpy,brandon-rhodes/numpy,joferkington/numpy,behzadnouri/numpy,MichaelAquilina/numpy,KaelChen/numpy,rhythmsosad/numpy,ogrisel/numpy,ViralLeadership/numpy,empeeu/numpy,mwiebe/numpy,shoyer/numpy,anntzer/numpy,embray/numpy,Linkid/numpy,cjermain/numpy,pizzathief/numpy,grlee77/numpy,GrimDerp/numpy,njase/numpy,ddasilva/numpy,groutr/numpy,ajdawson/numpy,hainm/numpy,jonathanunderwood/numpy,grlee77/numpy,WarrenWeckesser/numpy,astrofrog/numpy,numpy/numpy,mingwpy/numpy,skwbc/numpy,pbrod/numpy,numpy/numpy-refactor,Dapid/numpy,bmorris3/numpy,mathdd/numpy,drasmuss/numpy,Srisai85/numpy,larsmans/numpy,MSeifert04/numpy,KaelChen/numpy,ewmoore/numpy,ewmoore/numpy,MaPePeR/numpy,gmcastil/numpy,nguyentu1602/numpy,bertrand-l/numpy,stefanv/numpy,grlee77/numpy,musically-ut/numpy,shoyer/numpy,ewmoore/numpy,larsmans/numpy,rajathkumarmp/numpy,ESSS/numpy,utke1/numpy,nguyentu1602/numpy,astrofrog/numpy,mhvk/numpy,musically-ut/numpy,rherault-insa/numpy,jankoslavic/numpy,chiffa/numpy,Dapid/numpy,sigma-random/numpy,cowlicks/numpy,skwbc/numpy,ekalosak/numpy,empeeu/numpy,GaZ3ll3/numpy,dch312/numpy,dwillmer/numpy,stefanv/numpy,mathdd/numpy,moreati/numpy,embray/numpy,simongibbons/numpy,dwf/numpy,skymanaditya1/numpy,ChanderG/numpy,naritta/numpy,skymanaditya1/numpy,pyparallel/numpy,ajdawson/numpy,gmcastil/numpy,KaelChen/numpy,anntzer/numpy,dwf/numpy,mwiebe/numpy,pbrod/numpy,jakirkham/numpy,mindw/numpy,argriffing/numpy,dato-code/numpy,argriffing/numpy,bringingheavendown/numpy,nbeaver/numpy,NextThought/pypy-numpy,Yusa95/numpy,naritta/numpy,nguyentu1602/numpy,andsor/numpy,charris/numpy,MSeifert04/numpy,rherault-insa/numpy,embray/numpy,mortada/numpy,Eric89GXL/numpy,Eric89GXL/numpy,GaZ3ll3/numpy,jonathanunderwood/numpy,rhythmsosad/numpy,ahaldane/numpy,mathdd/numpy,SunghanKim/numpy,pbrod/numpy,BMJHayward/numpy,immerrr/numpy,numpy/numpy-refactor,maniteja123/numpy,tacaswell/numpy,Linkid/numpy,bmorris3/numpy,sigma-random/numpy,trankmichael/numpy,ChristopherHogan/numpy,Linkid/numpy,hainm/numpy,stuarteberg/numpy,seberg/numpy,chatcannon/numpy,joferkington/numpy,Linkid/numpy,yiakwy/numpy,matthew-brett/numpy,AustereCuriosity/numpy,tacaswell/numpy,BMJHayward/numpy,kirillzhuravlev/numpy,stefanv/numpy,Eric89GXL/numpy,njase/numpy,larsmans/numpy,dch312/numpy,MichaelAquilina/numpy,bertrand-l/numpy,madphysicist/numpy,matthew-brett/numpy,endolith/numpy,behzadnouri/numpy,cjermain/numpy,mattip/numpy,ogrisel/numpy,ewmoore/numpy,naritta/numpy,jschueller/numpy,KaelChen/numpy,mingwpy/numpy,skwbc/numpy,cowlicks/numpy,jorisvandenbossche/numpy,rajathkumarmp/numpy,trankmichael/numpy,githubmlai/numpy,rgommers/numpy,kiwifb/numpy,trankmichael/numpy,ContinuumIO/numpy,felipebetancur/numpy,SiccarPoint/numpy,madphysicist/numpy,felipebetancur/numpy,BabeNovelty/numpy,grlee77/numpy,rudimeier/numpy,SiccarPoint/numpy,SiccarPoint/numpy,mortada/numpy,jschueller/numpy,NextThought/pypy-numpy,ahaldane/numpy,ssanderson/numpy,pizzathief/numpy,BabeNovelty/numpy,bmorris3/numpy,WarrenWeckesser/numpy,CMartelLML/numpy,pizzathief/numpy,grlee77/numpy,stefanv/numpy,pelson/numpy,ESSS/numpy,sonnyhu/numpy,SunghanKim/numpy,AustereCuriosity/numpy,tdsmith/numpy,rgommers/numpy,has2k1/numpy,naritta/numpy,ddasilva/numpy,felipebetancur/numpy,nguyentu1602/numpy,WarrenWeckesser/numpy,AustereCuriosity/numpy,WarrenWeckesser/numpy,rmcgibbo/numpy,sonnyhu/numpy,drasmuss/numpy,dimasad/numpy,MichaelAquilina/numpy,dwillmer/numpy,bmorris3/numpy,seberg/numpy,githubmlai/numpy,jorisvandenbossche/numpy,andsor/numpy,kiwifb/numpy,pizzathief/numpy,ekalosak/numpy,cjermain/numpy,immerrr/numpy,dimasad/numpy,rmcgibbo/numpy,sigma-random/numpy,MSeifert04/numpy,seberg/numpy,b-carter/numpy,MaPePeR/numpy,ahaldane/numpy,mhvk/numpy,pelson/numpy,mindw/numpy,rherault-insa/numpy,ekalosak/numpy,pbrod/numpy,shoyer/numpy,simongibbons/numpy,Yusa95/numpy,tacaswell/numpy,GrimDerp/numpy,groutr/numpy,GaZ3ll3/numpy,tynn/numpy,jankoslavic/numpy,SunghanKim/numpy,jorisvandenbossche/numpy,dwillmer/numpy,rmcgibbo/numpy,pizzathief/numpy,mathdd/numpy,numpy/numpy-refactor,BMJHayward/numpy,ChristopherHogan/numpy,CMartelLML/numpy,madphysicist/numpy,hainm/numpy,tdsmith/numpy,dato-code/numpy,larsmans/numpy,dwf/numpy,jakirkham/numpy,nbeaver/numpy,rajathkumarmp/numpy,WillieMaddox/numpy,ajdawson/numpy,sinhrks/numpy,stuarteberg/numpy,Eric89GXL/numpy,gfyoung/numpy,dato-code/numpy,numpy/numpy-refactor,gmcastil/numpy,abalkin/numpy,tdsmith/numpy,bertrand-l/numpy,sinhrks/numpy,immerrr/numpy,mwiebe/numpy,MSeifert04/numpy,NextThought/pypy-numpy,stefanv/numpy,skymanaditya1/numpy,simongibbons/numpy,SiccarPoint/numpy,chatcannon/numpy,bringingheavendown/numpy,jonathanunderwood/numpy,mhvk/numpy,numpy/numpy,simongibbons/numpy,ESSS/numpy,anntzer/numpy,ddasilva/numpy,kiwifb/numpy,dimasad/numpy,GaZ3ll3/numpy,charris/numpy,ogrisel/numpy,joferkington/numpy,tynn/numpy,maniteja123/numpy,matthew-brett/numpy,ogrisel/numpy,NextThought/pypy-numpy,leifdenby/numpy,dch312/numpy,jakirkham/numpy,BabeNovelty/numpy,pbrod/numpy,Dapid/numpy,brandon-rhodes/numpy,cjermain/numpy,ContinuumIO/numpy,jorisvandenbossche/numpy,groutr/numpy,Anwesh43/numpy,MSeifert04/numpy,mindw/numpy,jorisvandenbossche/numpy,dwillmer/numpy,mattip/numpy,empeeu/numpy,chiffa/numpy,skymanaditya1/numpy,simongibbons/numpy,brandon-rhodes/numpy,sonnyhu/numpy,mingwpy/numpy,seberg/numpy,pyparallel/numpy,pdebuyl/numpy,Yusa95/numpy,dwf/numpy,yiakwy/numpy,endolith/numpy,GrimDerp/numpy,has2k1/numpy,GrimDerp/numpy,pelson/numpy,andsor/numpy,chatcannon/numpy,kirillzhuravlev/numpy,stuarteberg/numpy,rhythmsosad/numpy,pdebuyl/numpy,Anwesh43/numpy,astrofrog/numpy,ajdawson/numpy,moreati/numpy,rhythmsosad/numpy,b-carter/numpy,felipebetancur/numpy,moreati/numpy,Srisai85/numpy,MichaelAquilina/numpy,argriffing/numpy,Yusa95/numpy,ssanderson/numpy,mhvk/numpy,pelson/numpy,jakirkham/numpy,rudimeier/numpy,solarjoe/numpy,tynn/numpy,abalkin/numpy,Srisai85/numpy,rudimeier/numpy,githubmlai/numpy,BMJHayward/numpy,endolith/numpy,leifdenby/numpy,hainm/numpy,ChanderG/numpy,charris/numpy,andsor/numpy,shoyer/numpy,rmcgibbo/numpy,madphysicist/numpy,jschueller/numpy,ekalosak/numpy,leifdenby/numpy,MaPePeR/numpy,rgommers/numpy,ContinuumIO/numpy,dch312/numpy,sonnyhu/numpy,charris/numpy,WillieMaddox/numpy,BabeNovelty/numpy,gfyoung/numpy,has2k1/numpy