Normalmente no 3.4 eu apenas compilo, sem problemas.! 'hbdossrl' library skipped (platform or compiler not supported)
gcc -I. -I../../../../../../include -Wmissing-braces -Wreturn-type -Wformat -Wimplicit-int -Wimplicit-function-declaration -O3 -fomit-frame-pointer -march=i586 -mtune=pentiumpro -DUNICODE -Id:/github/harbour32/src/3rd/zlib -DPNG_NO_STDIO -DPNG_ARM_NEON_OPT=0 -opng.o -c ../../../png.c
cc1.exe: error: CPU you selected does not support x86-64 instruction set
mingw32-make[4]: *** [../../../../../../config/rules.mk:88: png.o] Error 1
mingw32-make[3]: *** [../../../config/lib.mk:68: descend] Error 2
mingw32-make[2]: *** [../../config/dir.mk:68: png.inst] Error 2
mingw32-make[1]: *** [../config/dir.mk:68: 3rd.inst] Error 2
mingw32-make: *** [config/dir.mk:68: src.inst] Error 2
Como corrigir isso no 3.2 ?

