Please give us log for Solaris 11 Openindiana.

Here are the logs. The package was configured with
CC="gcc -m64 -O2 -D_XOPEN_SOURCE=700"

In solaris11openindiana-log2, we have two errors: one for ulong, and another for ushort.
I fixed the former. It is because of our mistake of using ulong before it is handled by libgcrypt/src/types.h. In the first place, it is implemented by "unsigned long", so, there is no need to use ulong here.

I don't see the reason why the latter error occurs.
IIUC, on Solaris, ulong/ushort/etc. are defined in <sys/types.h>. And those are detected in solaris11openindiana-log1 correctly.
By defining __EXTENSIONS__ in config.h for Solaris, the type definition of ushort should be available: g10lib.h in libgcrypt/src -> types.h in libgcrypt/src -> <sys/types.h>

If any information about the definition of ushort on Solaris 11 Openindiana, please let me know.

For GNU/Linux or GNU/kFreeBSD system, libgcrypt 1.8 with libgpg-error 1.36 has no problem in Debian build:
https://buildd.debian.org/status/package.php?p=libgcrypt20

Let me see what's going on...

OK, I identified the problem on OpenIndiana. The inclusion of <unistd.h> causes inclusion of <sys/types.h> before config.h. I'm going to fix this.

On Solaris, the test errors are because of:

USAGE
       Because of the impact on system resources, the use of mlock() and
       munlock() is restricted to users with the {PRIV_PROC_LOCK_MEMORY}
       privilege.

When I run t-secmem and t-sexp by root, it works.

I tested on FreeBSD. Same errors (t-secmen and t-sexp) are reproducible when we set:

# sysctl security.bsd.unprivileged_mlock=0

(while the default is 1).

I think that setting 1 to the kernel parameter on GNU/kFreeBSD, it will work.

For Cygwin, I can't find how its libgcrypt package is built.
I found this for MSYS2: https://github.com/msys2/MSYS2-packages/tree/master/libgcrypt
This for Mingw-w64: https://github.com/msys2/MINGW-packages/tree/master/mingw-w64-libgcrypt

It looks like MSYS2 packaging is from Fedora Project???

Regarding GNU/kFreeBSD, my machine is using the FreeBSD 9.0 kernel, which does not yet have the security.bsd.unprivileged_mlock oid. Like what was mentioned here: https://lists.debian.org/debian-bsd/2014/08/msg00092.html

Regarding Cygwin: The sources are a bit hard to find.
https://cygwin.com/packages.html
-> https://cygwin.com/packaging/repos.html
-> https://cygwin.com/git-cygwin-packages/
-> https://cygwin.com/git-cygwin-packages/?p=git/cygwin-packages/libgcrypt.git;a=summary

Note: The commit in master (1.9) is rCe0898d0628789414
and in 1.8 it is rC03e6d6597198ee