Compiling gnu diction on Cygwin

[Keith Christian]

Hi Cygwin fans,

Version info:
Windows 10:10.0.19043 N/A Build 19043
Cygwin: CYGWIN_NT-10.0  3.3.4(0.341/5/3) 2022-01-31 19:35 x86_64 Cygwin

I successfully compiled diction and style from this tar file, but with errors:
https://ftp.gnu.org/gnu/diction/diction-1.11.tar.gz

Diction and style both work, but I am looking for suggestions for how
to clean up the compile errors in lines 48 - 60 below:

     1  ./configure; make; make install
     2  Tue, Apr  5, 2022  7:09:05 AM
     3  checking build system type... x86_64-unknown-cygwin
     4  checking host system type... x86_64-unknown-cygwin
     5  checking for gcc... gcc
     6  checking for C compiler default output file name... a.exe
     7  checking whether the C compiler works... yes
     8  checking whether we are cross compiling... no
     9  checking for suffix of executables... .exe
    10  checking for suffix of object files... o
    11  checking whether we are using the GNU C compiler... yes
    12  checking whether gcc accepts -g... yes
    13  checking for gcc option to accept ISO C89... none needed
    14  checking for a BSD-compatible install... /usr/bin/install -c
    15  checking for strerror... yes
    16  checking for library containing regcomp... none required
    17  checking for broken realloc... no
    18  checking for msgfmt... yes
    19  checking how to run the C preprocessor... gcc -E
    20  checking for grep that handles long lines and -e... /usr/bin/grep
    21  checking for egrep... /usr/bin/grep -E
    22  checking for ANSI C header files... yes
    23  checking for sys/types.h... yes
    24  checking for sys/stat.h... yes
    25  checking for stdlib.h... yes
    26  checking for string.h... yes
    27  checking for memory.h... yes
    28  checking for strings.h... yes
    29  checking for inttypes.h... yes
    30  checking for stdint.h... yes
    31  checking for unistd.h... yes
    32  checking libintl.h usability... yes
    33  checking libintl.h presence... yes
    34  checking for libintl.h... yes
    35  checking for library containing gettext... -lintl
    36  configure: creating ./config.status
    37  config.status: creating Makefile
    38  config.status: creating diction.1
    39  config.status: creating diction.texi
    40  config.status: creating diction.spec
    41  config.status: creating style.1
    42  config.status: creating test/rundiction
    43  config.status: creating config.h
    44  gcc -c -I. -DSHAREDIR=\"/usr/local/share\"
-DLOCALEDIR=\"/usr/local/share/locale\" -g -O2 -pipe -Wno-unused
-Wshadow -Wbad-function-cast -Wmissing-prototypes -Wstrict-prototypes
-Wcast-align -Wcast-qual -Wpointer-arith -Wcast-align -Wwrite-strings
-Wmissing-declarations -Wnested-externs -Wundef -pedantic -fno-common
diction.c
    45  gcc -c -I. -DSHAREDIR=\"/usr/local/share\"
-DLOCALEDIR=\"/usr/local/share/locale\" -g -O2 -pipe -Wno-unused
-Wshadow -Wbad-function-cast -Wmissing-prototypes -Wstrict-prototypes
-Wcast-align -Wcast-qual -Wpointer-arith -Wcast-align -Wwrite-strings
-Wmissing-declarations -Wnested-externs -Wundef -pedantic -fno-common
sentence.c
    46  gcc -c -I. -DSHAREDIR=\"/usr/local/share\"
-DLOCALEDIR=\"/usr/local/share/locale\" -g -O2 -pipe -Wno-unused
-Wshadow -Wbad-function-cast -Wmissing-prototypes -Wstrict-prototypes
-Wcast-align -Wcast-qual -Wpointer-arith -Wcast-align -Wwrite-strings
-Wmissing-declarations -Wnested-externs -Wundef -pedantic -fno-common
misc.c
    47  gcc -c -I. -DSHAREDIR=\"/usr/local/share\"
-DLOCALEDIR=\"/usr/local/share/locale\" -g -O2 -pipe -Wno-unused
-Wshadow -Wbad-function-cast -Wmissing-prototypes -Wstrict-prototypes
-Wcast-align -Wcast-qual -Wpointer-arith -Wcast-align -Wwrite-strings
-Wmissing-declarations -Wnested-externs -Wundef -pedantic -fno-common
getopt.c
    48  getopt.c:147:1: warning: function declaration isnt a prototype
[-Wstrict-prototypes]
    49    147 | extern char *getenv ();
    50        | ^~~~~~
    51  getopt.c: In function _getopt_internal_r:
    52  getopt.c:444:23: warning: cast discards const qualifier from
pointer target type [-Wcast-qual]
    53    444 |             exchange ((char **) argv, d);
    54        |                       ^
    55  getopt.c:467:23: warning: cast discards const qualifier from
pointer target type [-Wcast-qual]
    56    467 |             exchange ((char **) argv, d);
    57        |                       ^
    58  getopt.c:774:27: warning: cast discards const qualifier from
pointer target type [-Wcast-qual]
    59    774 |           d->__nextchar = (char *) "";
    60        |                           ^
    61  gcc -c -I. -DSHAREDIR=\"/usr/local/share\"
-DLOCALEDIR=\"/usr/local/share/locale\" -g -O2 -pipe -Wno-unused
-Wshadow -Wbad-function-cast -Wmissing-prototypes -Wstrict-prototypes
-Wcast-align -Wcast-qual -Wpointer-arith -Wcast-align -Wwrite-strings
-Wmissing-declarations -Wnested-externs -Wundef -pedantic -fno-common
getopt1.c
    62  gcc -o diction -g diction.o sentence.o misc.o \
    63          getopt.o getopt1.o -lintl
    64  gcc -c -I. -DSHAREDIR=\"/usr/local/share\"
-DLOCALEDIR=\"/usr/local/share/locale\" -g -O2 -pipe -Wno-unused
-Wshadow -Wbad-function-cast -Wmissing-prototypes -Wstrict-prototypes
-Wcast-align -Wcast-qual -Wpointer-arith -Wcast-align -Wwrite-strings
-Wmissing-declarations -Wnested-externs -Wundef -pedantic -fno-common
style.c
    65  gcc -o style -g style.o sentence.o misc.o \
    66          getopt.o getopt1.o -lm -lintl
    67  msgfmt -o de.mo de.po
    68  msgfmt -o en_GB.mo en_GB.po
    69  msgfmt -o nl.mo nl.po

Have a great day and thanks!