I'm using the source code downloaded from:
https://ftp.sdaoden.eu/s-nail-14.9.24.tar.xz
gcc 11.3
Below is the build log and repro. Not sure what other logs I can help provide.
```
>>> make all
Operating system is Windows_NT
Checking for basic utility set
Setting up configuration options ... done
Joining in ./make.rc ... done
Checking for remaining set of utilities
Evaluating all configuration items ... done
. CC compiles "Hello world" .. yes
. Compiled program works .. yes
Detecting ${CFLAGS}/${LDFLAGS} for ${CC}=cc, just a second..
Configuration is up-to-date
make[1]: Entering directory
'/cygdrive/c/Users/user/Downloads/s-nail-14.9.24/.obj'
CC mx-001.o
CC mx-002.o
CC mx-003.o
CC mx-004.o
CC mx-005.o
CC mx-006.o
CC mx-007.o
CC mx-008.o
CC mx-009.o
CC mx-010.o
CC mx-011.o
CC mx-012.o
In file included from
/cygdrive/c/Users/user/Downloads/s-nail-14.9.24/include/mx/nail.h:42,
from
/cygdrive/c/Users/user/Downloads/s-nail-14.9.24/src/mx/cmd-head.c:41:
/cygdrive/c/Users/user/Downloads/s-nail-14.9.24/src/mx/cmd-head.c: In
function 'a_chead__hprf':
/cygdrive/c/Users/user/Downloads/s-nail-14.9.24/src/mx/cmd-head.c:142:7:
error: expected identifier before numeric constant
142 | _IFMT = 1<<2,
| ^~~~~
/cygdrive/c/Users/user/Downloads/s-nail-14.9.24/src/mx/cmd-head.c:233:16:
error: '_LOOP_MASK' undeclared (first use in this function)
233 | flags &= _LOOP_MASK;
| ^~~~~~~~~~
/cygdrive/c/Users/user/Downloads/s-nail-14.9.24/src/mx/cmd-head.c:233:16:
note: each undeclared identifier is reported only once for each
function it appears in
/cygdrive/c/Users/user/Downloads/s-nail-14.9.24/src/mx/cmd-head.c:272:30:
error: '_PUTCB_UTF8_SHIFT' undeclared (first use in this function)
272 | flags |= 2 << _PUTCB_UTF8_SHIFT;
| ^~~~~~~~~~~~~~~~~
/cygdrive/c/Users/user/Downloads/s-nail-14.9.24/src/mx/cmd-head.c:311:31:
error: '_PUTCB_UTF8_MASK' undeclared (first use in this function)
311 | if ((n = (flags & _PUTCB_UTF8_MASK)) != 0) {
| ^~~~~~~~~~~~~~~~
/cygdrive/c/Users/user/Downloads/s-nail-14.9.24/src/mx/cmd-head.c:434:19:
error: '_SFMT' undeclared (first use in this function); did you mean
'S_IFMT'?
434 | flags |= _SFMT;
| ^~~~~
| S_IFMT
make[1]: *** [mk-config.mk:243: mx-012.o] Error 1
make[1]: Leaving directory
'/cygdrive/c/Users/user/Downloads/s-nail-14.9.24/.obj'
make: *** [makefile:30: build] Error 2
```
Here's my cc:
```
>>> cc -v
Using built-in specs.
COLLECT_GCC=cc
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-pc-cygwin/11/lto-wrapper.exe
Target: x86_64-pc-cygwin
Configured with:
/mnt/share/cygpkgs/gcc/gcc.x86_64/src/gcc-11.3.0/configure
--srcdir=/mnt/share/cygpkgs/gcc/gcc.x86_64/src/gcc-11.3.0
--prefix=/usr --exec-prefix=/usr --localstatedir=/var
--sysconfdir=/etc --docdir=/usr/share/doc/gcc
--htmldir=/usr/share/doc/gcc/html -C --build=x86_64-pc-cygwin
--host=x86_64-pc-cygwin --target=x86_64-pc-cygwin
--without-libiconv-prefix --without-libintl-prefix
--libexecdir=/usr/lib --with-gcc-major-version-only --enable-shared
--enable-shared-libgcc --enable-static
--enable-version-specific-runtime-libs --enable-bootstrap
--enable-__cxa_atexit --with-dwarf2 --with-tune=generic
--enable-languages=c,c++,fortran,lto,objc,obj-c++,jit
--enable-graphite --enable-threads=posix --enable-libatomic
--enable-libgomp --enable-libquadmath --enable-libquadmath-support
--disable-libssp --enable-libada --disable-symvers --with-gnu-ld
--with-gnu-as --with-cloog-include=/usr/include/cloog-isl
--without-libiconv-prefix --without-libintl-prefix --with-system-zlib
--enable-linker-build-id --with-default-libstdcxx-abi=gcc4-compatible
--enable-libstdcxx-filesystem-ts
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 11.3.0 (GCC)
```
