Don't export compiler flags to user code
Don't export compiler flags to user code

We should only export needed definitions, not compiler flags as this
breaks user code (see #371 for an example).

KevenRing/pcl,fanxiaochen/mypcltest,KevenRing/pcl,nh2/pcl,mikhail-matrosov/pcl,stefanbuettner/pcl,fskuka/pcl,fanxiaochen/mypcltest,ipa-rmb/pcl,3dtof/pcl,fanxiaochen/mypcltest,ResByte/pcl,stefanbuettner/pcl,sbec/pcl,jakobwilm/pcl,LZRS/pcl,lebronzhang/pcl,MMiknis/pcl,the-glu/pcl,krips89/pcl_newfeatures,ipa-rmb/pcl,raydtang/pcl,fskuka/pcl,soulsheng/pcl,locnx1984/pcl,shyamalschandra/pcl,chenxingzhe/pcl,shivmalhotra/pcl,locnx1984/pcl,starius/pcl,damienjadeduff/pcl,the-glu/pcl,shangwuhencc/pcl,msalvato/pcl_kinfu_highres,v4hn/pcl,nh2/pcl,nh2/pcl,zavataafnan/pcl-truck,closerbibi/pcl,ResByte/pcl,Tabjones/pcl,krips89/pcl_newfeatures,DaikiMaekawa/pcl,wgapl/pcl,zhangxaochen/pcl,damienjadeduff/pcl,the-glu/pcl,RufaelDev/pcc-mp3dg,nikste/pcl,starius/pcl,nh2/pcl,chenxingzhe/pcl,raydtang/pcl,shangwuhencc/pcl,mikhail-matrosov/pcl,lydhr/pcl,simonleonard/pcl,mschoeler/pcl,nikste/pcl,shivmalhotra/pcl,damienjadeduff/pcl,3dtof/pcl,lydhr/pcl,soulsheng/pcl,LZRS/pcl,zhangxaochen/pcl,ipa-rmb/pcl,stfuchs/pcl,msalvato/pcl_kinfu_highres,chenxingzhe/pcl,pkuhto/pcl,lydhr/pcl,kanster/pcl,Tabjones/pcl,KevenRing/pcl,fskuka/pcl,locnx1984/pcl,fskuka/pcl,closerbibi/pcl,sbec/pcl,drmateo/pcl,shyamalschandra/pcl,chatchavan/pcl,shyamalschandra/pcl,3dtof/pcl,soulsheng/pcl,srbhprajapati/pcl,krips89/pcl_newfeatures,fskuka/pcl,shivmalhotra/pcl,zhangxaochen/pcl,stefanbuettner/pcl,shyamalschandra/pcl,fanxiaochen/mypcltest,Tabjones/pcl,RufaelDev/pcc-mp3dg,sbec/pcl,stefanbuettner/pcl,wgapl/pcl,mschoeler/pcl,KevenRing/vlp,stfuchs/pcl,cascheberg/pcl,shangwuhencc/pcl,kanster/pcl,mikhail-matrosov/pcl,closerbibi/pcl,v4hn/pcl,krips89/pcl_newfeatures,damienjadeduff/pcl,DaikiMaekawa/pcl,drmateo/pcl,sbec/pcl,mschoeler/pcl,simonleonard/pcl,KevenRing/vlp,ResByte/pcl,sbec/pcl,cascheberg/pcl,KevenRing/vlp,jeppewalther/kinfu_segmentation,msalvato/pcl_kinfu_highres,3dtof/pcl,locnx1984/pcl,zavataafnan/pcl-truck,zhangxaochen/pcl,starius/pcl,mikhail-matrosov/pcl,nikste/pcl,stfuchs/pcl,starius/pcl,jeppewalther/kinfu_segmentation,chatchavan/pcl,v4hn/pcl,wgapl/pcl,3dtof/pcl,srbhprajapati/pcl,simonleonard/pcl,drmateo/pcl,chenxingzhe/pcl,msalvato/pcl_kinfu_highres,damienjadeduff/pcl,pkuhto/pcl,closerbibi/pcl,ResByte/pcl,locnx1984/pcl,krips89/pcl_newfeatures,shyamalschandra/pcl,closerbibi/pcl,starius/pcl,chatchavan/pcl,shivmalhotra/pcl,mikhail-matrosov/pcl,DaikiMaekawa/pcl,jeppewalther/kinfu_segmentation,shangwuhencc/pcl,RufaelDev/pcc-mp3dg,wgapl/pcl,srbhprajapati/pcl,soulsheng/pcl,zhangxaochen/pcl,MMiknis/pcl,zavataafnan/pcl-truck,Tabjones/pcl,raydtang/pcl,srbhprajapati/pcl,fanxiaochen/mypcltest,kanster/pcl,lebronzhang/pcl,MMiknis/pcl,srbhprajapati/pcl,ipa-rmb/pcl,soulsheng/pcl,jakobwilm/pcl,DaikiMaekawa/pcl,v4hn/pcl,the-glu/pcl,lydhr/pcl,LZRS/pcl,simonleonard/pcl,stefanbuettner/pcl,jakobwilm/pcl,KevenRing/pcl,msalvato/pcl_kinfu_highres,shangwuhencc/pcl,ResByte/pcl,LZRS/pcl,Tabjones/pcl,zavataafnan/pcl-truck,KevenRing/vlp,chatchavan/pcl,nikste/pcl,kanster/pcl,ipa-rmb/pcl,lebronzhang/pcl,chenxingzhe/pcl,MMiknis/pcl,the-glu/pcl,pkuhto/pcl,shivmalhotra/pcl,mschoeler/pcl,RufaelDev/pcc-mp3dg,cascheberg/pcl,LZRS/pcl,lebronzhang/pcl,cascheberg/pcl,simonleonard/pcl,nikste/pcl,cascheberg/pcl,drmateo/pcl,MMiknis/pcl,lydhr/pcl,jeppewalther/kinfu_segmentation,v4hn/pcl,jakobwilm/pcl,KevenRing/pcl,drmateo/pcl,KevenRing/vlp,jeppewalther/kinfu_segmentation,wgapl/pcl,kanster/pcl,pkuhto/pcl,mschoeler/pcl,raydtang/pcl,raydtang/pcl,stfuchs/pcl,lebronzhang/pcl,DaikiMaekawa/pcl,pkuhto/pcl,stfuchs/pcl,RufaelDev/pcc-mp3dg,jakobwilm/pcl,zavataafnan/pcl-truck