In file included from libavfilter/vf_mestimate.c:22: ./libavcodec/mathops.h: In function 'mid_pred': ./libavcodec/mathops.h:100:6: error: redeclaration of 't0' with no linkage int t0 = FFMIN(a, b); ^~ ./libavcodec/mathops.h:99:6: note: previous declaration of 't0' was here int t0,t1,t2,t3; ^~ ./libavcodec/mathops.h:101:6: error: redeclaration of 't1' with no linkage int t1 = FFMAX(a, b); ^~ ./libavcodec/mathops.h:99:9: note: previous declaration of 't1' was here int t0,t1,t2,t3; ^~ ./libavcodec/mathops.h:102:6: error: redeclaration of 't2' with no linkage int t2 = FFMAX(t0, c); ^~ ./libavcodec/mathops.h:99:12: note: previous declaration of 't2' was here int t0,t1,t2,t3; ^~ ./libavcodec/mathops.h:99:15: warning: unused variable 't3' [-Wunused-variable] int t0,t1,t2,t3; ^~ In file included from libavfilter/vf_minterpolate.c:23: ./libavcodec/mathops.h: In function 'mid_pred': ./libavcodec/mathops.h:100:6: error: redeclaration of 't0' with no linkage int t0 = FFMIN(a, b); ^~ ./libavcodec/mathops.h:99:6: note: previous declaration of 't0' was here int t0,t1,t2,t3; ^~ ./libavcodec/mathops.h:101:6: error: redeclaration of 't1' with no linkage int t1 = FFMAX(a, b); ^~ ./libavcodec/mathops.h:99:9: note: previous declaration of 't1' was here int t0,t1,t2,t3; ^~ ./libavcodec/mathops.h:102:6: error: redeclaration of 't2' with no linkage int t2 = FFMAX(t0, c); ^~ ./libavcodec/mathops.h:99:12: note: previous declaration of 't2' was here int t0,t1,t2,t3; ^~ ./libavcodec/mathops.h:99:15: warning: unused variable 't3' [-Wunused-variable] int t0,t1,t2,t3; ^~ make: *** [ffbuild/common.mak:81: libavfilter/vf_mestimate.o] Error 1 make: *** Waiting for unfinished jobs.... make: *** [ffbuild/common.mak:81: libavfilter/vf_minterpolate.o] Error 1