OpenSSL 1.1.1b version chooses wrong AS(assembler) on Windows

Richard Levitte levitte at
Mon Mar 11 05:43:34 UTC 2019

With the default configuration, I see it using the C compiler...  how
did you configure OpenSSL?


On Mon, 11 Mar 2019 04:48:16 +0100,
Vinay Kumar via openssl-users wrote:
> Hi All,
> The OpenSSL version 1.1.1b chooses wrong AS(assembler) on running through Cygwin in Windows. It
> chooses 'ml' instead of 'nasm'(but uses the syntax of nasm) which causes OpenSSL build failure on
> Windows. The same works fine with OpenSSL 1.1.0i version.
> Looks like a bug with 1.1.1b version.
> Setting 'AS=nasm' before running the configure script in the Cygwin shell resolves the problem.
> Can someone please confirm if the above workaround is acceptable and can be logged as bug in
> OpenSSL 1.1.1b version?
> Regards,
> Vinay
Richard Levitte         levitte at
OpenSSL Project

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