Fix: qtpng.c:74:5: error: implicitly declaring library function 'memcpy' with type 'void *(void *, const void *, unsigned long)' [-Werror,-Wimplicit-function-declaration] qtpng.c:213:7: error: implicitly declaring library function 'strcasecmp' with type 'int (const char *, const char *)' [-Werror,-Wimplicit-function-declaration] https://sourceforge.net/p/libquicktime/git/ci/55f5d4523a96cdf2a45a3af81b8d251337c5d020/ --- plugins/png/qtpng.c.orig 2011-01-07 08:40:46.000000000 -0600 +++ plugins/png/qtpng.c 2021-07-27 15:24:50.000000000 -0500 @@ -25,6 +25,8 @@ #include "lqt_private.h" #include #include +#include +#include #include #include "qtpng.h"