Hi Juan Carlos,

On 24/05/2020 02:08, Juan carlos Rebate via Cygwin wrote:
...

1 the compiler is extremely slow, gcc on Linux is about 10 times
faster, How could I speed up the compilation process?.

Unfortunately, Cygwin's emulation of fork() is slow compared to the native Linux implementation (I've seen 1000x difference once, in a test launching the same program repeatedly). There's not much you can do about it, except getting faster hardware. A C++ build involves lots and lots of programs being forked.

2 the executables produced are too fat, for example qemu-system-i386 is 65
MB, but it should be 10.5 MB, if I use the -s option in configure returns
an unknown error message, how could I fix it? Thank you

Why do you think qemu-system-i386 "should be 10.5 MB" ?
Are you using 32-bit or 64-bit Cygwin? 64-bit executables are usually bigger than their 32-bit counterparts (although rarely six times as big).

You really need to give us more information if you hope to get help, like the actual commands you used and the exact error message.

Without those, we can only guess, and my crystal ball is not very reliable.

If you want to strip the resulting executables, you could try setting the LDFLAGS environment variable to '-s' before running configure

Csaba
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