[1459/2233] Compiling C object 'subprojects/dssim/subprojects@dssim@@dssim@exe/src_main.c.o'.
FAILED: subprojects/dssim/subprojects@dssim@@dssim@exe/src_main.c.o
cc -Isubprojects/dssim/subprojects@dssim@@dssim@exe -Isubprojects/dssim -I../subprojects/dssim -I/usr/include/libpng12 -pipe -D_FILE_OFFSET_BITS=64 -Wall -Winvalid-pch -O2 -g -DNDEBUG -fstrict-aliasing -ffast-math -funroll-loops -fomit-frame-pointer -ffinite-math-only -Wall -std=c99  -MD -MQ 'subprojects/dssim/subprojects@dssim@@dssim@exe/src_main.c.o' -MF 'subprojects/dssim/subprojects@dssim@@dssim@exe/src_main.c.o.d' -o 'subprojects/dssim/subprojects@dssim@@dssim@exe/src_main.c.o' -c ../subprojects/dssim/src/main.c
In file included from /usr/include/libpng12/png.h:540:0,
                 from ../subprojects/dssim/src/main.c:27:
/usr/include/libpng12/pngconf.h:371:21: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘.’ token
            __pngconf.h__ in libpng already includes setjmp.h;
                     ^
/usr/include/libpng12/pngconf.h:372:12: error: unknown type name ‘__dont__’
            __dont__ include it again.;
            ^
/usr/include/libpng12/pngconf.h:372:29: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘it’
            __dont__ include it again.;
                             ^
/usr/include/libpng12/pngconf.h:372:29: error: unknown type name ‘it’
[1460/2233] Compiling C object 'subprojects/gst-plugins-bad/ext/hls/subprojects@gst-plugins-bad@ext@hls@@gsthls@sha/m3u8.c.o'.
ninja: build stopped: subcommand failed.