build.sh: Add -lm in GSTREAMER_FLAGS for static mode
build.sh: Add -lm in GSTREAMER_FLAGS for static mode

libgstopengl.a depends on the math library

GokulEvuri/openwebrtc,danielwegener/openwebrtc,zombieobject/openwebrtc,mayank-kratin/openwebrtc,adozenlines/openwebrtc,EricssonResearch/openwebrtc,shakin/openwebrtc,shoreflyer/openwebrtc,AlertMe/openwebrtc,ford-prefect/openwebrtc,mayank-kratin/openwebrtc,multipath-rtp/openwebrtc,skyfe79/openwebrtc,alessandrod/openwebrtc,1yvT0s/openwebrtc,pererikb/openwebrtc,multipath-rtp/openwebrtc,EricssonResearch/openwebrtc,mayank-kratin/openwebrtc,shakin/openwebrtc,philn/openwebrtc,procandi/openwebrtc,ford-prefect/openwebrtc,stefhak/openwebrtc,Jonekee/openwebrtc,alessandrod/openwebrtc,todotobe1/openwebrtc,EricssonResearch/openwebrtc,ford-prefect/openwebrtc,mayank-kratin/openwebrtc,procandi/openwebrtc,zombieobject/openwebrtc,barcoyou/openwebrtc,danielwegener/openwebrtc,barcoyou/openwebrtc,danielwegener/openwebrtc,ajohnson23/openwebrtc,Metrological/openwebrtc,skyfe79/openwebrtc,GokulEvuri/openwebrtc,mayank-kratin/openwebrtc,tymiles003/openwebrtc,Metrological/openwebrtc,tymiles003/openwebrtc,shirish87/openwebrtc,justinjoy/openwebrtc,Jonekee/openwebrtc,felipeardila1010/openwebrtc,multipath-rtp/openwebrtc,pererikb/openwebrtc,EricssonResearch/openwebrtc,Rugvip/openwebrtc,alessandrod/openwebrtc,cnbin/openwebrtc,skyfe79/openwebrtc,pererikb/openwebrtc,ford-prefect/openwebrtc,procandi/openwebrtc,skyfe79/openwebrtc,GokulEvuri/openwebrtc,pererikb/openwebrtc,Rugvip/openwebrtc,todotobe1/openwebrtc,felipeardila1010/openwebrtc,shirish87/openwebrtc,Rugvip/openwebrtc,stefhak/openwebrtc,justinjoy/openwebrtc,Metrological/openwebrtc,AlertMe/openwebrtc,GokulEvuri/openwebrtc,linearregression/openwebrtc,felipeardila1010/openwebrtc,sdroege/openwebrtc,mayank-kratin/openwebrtc,shakin/openwebrtc,jwvdiermen/openwebrtc,zombieobject/openwebrtc,jwvdiermen/openwebrtc,Jonekee/openwebrtc,shirish87/openwebrtc,Jonekee/openwebrtc,cnbin/openwebrtc,tymiles003/openwebrtc,cnbin/openwebrtc,stefhak/openwebrtc,justinjoy/openwebrtc,pererikb/openwebrtc,justinjoy/openwebrtc,linearregression/openwebrtc,tymiles003/openwebrtc,sdroege/openwebrtc,felipeardila1010/openwebrtc,jwvdiermen/openwebrtc,todotobe1/openwebrtc,zombieobject/openwebrtc,ajohnson23/openwebrtc,shirish87/openwebrtc,tymiles003/openwebrtc,jwvdiermen/openwebrtc,multipath-rtp/openwebrtc,1yvT0s/openwebrtc,Metrological/openwebrtc,Jonekee/openwebrtc,shoreflyer/openwebrtc,AlertMe/openwebrtc,EricssonResearch/openwebrtc,shirish87/openwebrtc,alessandrod/openwebrtc,shakin/openwebrtc,philn/openwebrtc,todotobe1/openwebrtc,multipath-rtp/openwebrtc,Metrological/openwebrtc,AlertMe/openwebrtc,AlertMe/openwebrtc,Rugvip/openwebrtc,adozenlines/openwebrtc,barcoyou/openwebrtc,procandi/openwebrtc,ajohnson23/openwebrtc,stefhak/openwebrtc,philn/openwebrtc,sdroege/openwebrtc,ford-prefect/openwebrtc,sdroege/openwebrtc,alessandrod/openwebrtc,jwvdiermen/openwebrtc,1yvT0s/openwebrtc,1yvT0s/openwebrtc,felipeardila1010/openwebrtc,danielwegener/openwebrtc,felipeardila1010/openwebrtc,GokulEvuri/openwebrtc,skyfe79/openwebrtc,tymiles003/openwebrtc,philn/openwebrtc,sdroege/openwebrtc,pererikb/openwebrtc,justinjoy/openwebrtc,cnbin/openwebrtc,adozenlines/openwebrtc,Jonekee/openwebrtc,shoreflyer/openwebrtc,procandi/openwebrtc,procandi/openwebrtc,cnbin/openwebrtc,stefhak/openwebrtc,pererikb/openwebrtc,1yvT0s/openwebrtc,philn/openwebrtc,danielwegener/openwebrtc,linearregression/openwebrtc,zombieobject/openwebrtc,linearregression/openwebrtc,shoreflyer/openwebrtc,sdroege/openwebrtc,todotobe1/openwebrtc,justinjoy/openwebrtc,shirish87/openwebrtc,jwvdiermen/openwebrtc,stefhak/openwebrtc,zombieobject/openwebrtc,adozenlines/openwebrtc,EricssonResearch/openwebrtc,shakin/openwebrtc,Metrological/openwebrtc,multipath-rtp/openwebrtc,AlertMe/openwebrtc,shoreflyer/openwebrtc,shakin/openwebrtc,ajohnson23/openwebrtc,cnbin/openwebrtc,EricssonResearch/openwebrtc,skyfe79/openwebrtc,linearregression/openwebrtc,danielwegener/openwebrtc,adozenlines/openwebrtc,barcoyou/openwebrtc,GokulEvuri/openwebrtc,1yvT0s/openwebrtc,ajohnson23/openwebrtc,Rugvip/openwebrtc,todotobe1/openwebrtc,shoreflyer/openwebrtc,adozenlines/openwebrtc,alessandrod/openwebrtc,ajohnson23/openwebrtc,barcoyou/openwebrtc,linearregression/openwebrtc,shoreflyer/openwebrtc,Rugvip/openwebrtc,philn/openwebrtc,philn/openwebrtc,multipath-rtp/openwebrtc,barcoyou/openwebrtc,ford-prefect/openwebrtc