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checking for png_get_acTL in -lpng... no
configure: error: --with-system-png won't work because the system's libpng doesn't have APNG support
*** Fix above errors and then restart with               "gmake -j2 -f client.mk build"
gmake[1]: ** [configure] Erro 1
gmake[1]: Saindo do diretório `/tmp/mozilla'
make: ** [/tmp/mozilla/Makefile] Erro 2