Scary-looking but otherwise harmless changes allow me to build for Windows.

That is to say, with mingw32.  This amounts to the following:

 (1) break compat.c into compat_strlcpy.c and compat_strlcat.c
 (2) add compat_getsubopt.c (from OpenBSD) and test-getsubopt.c
 (3) add test-strptime.c for HAVE_STRPTIME
 (4) add ifdef bits here and there, where necessary
 (5) remove some harmless unportable stuff (u_char, localtime_r)

I've added the appropriate mdocml.zip target to the Makefile, too.

14 files changed, 264 insertions, 70 deletions

diff --git a/Makefile b/Makefile
index ceeaab60..93959a6d 100644
--- a/Makefile
+++ b/Makefile
@@ -18,7 +18,8 @@ VDATE		 = 24 July 2011
 # UCS-4 value) should you define USE_WCHAR.  If you define it and your
 # system DOESN'T support this, -Tlocale will produce garbage.
 # If you don't define it, -Tlocale is a synonym for -Tacsii.
-CFLAGS		+= -g -DUSE_WCHAR -DHAVE_CONFIG_H -DVERSION="\"$(VERSION)\""
+CFLAGS	 	+= -DUSE_WCHAR
+CFLAGS		+= -g -DHAVE_CONFIG_H -DVERSION="\"$(VERSION)\""
 CFLAGS     	+= -W -Wall -Wstrict-prototypes -Wno-unused-parameter -Wwrite-strings
 PREFIX		 = /usr/local
 BINDIR		 = $(PREFIX)/bin
@@ -45,7 +46,9 @@ SRCS		 = Makefile \
 		   att.in \
 		   chars.c \
 		   chars.in \
-		   compat.c \
+		   compat_getsubopt.c \
+		   compat_strlcat.c \
+		   compat_strlcpy.c \
 		   config.h.post \
 		   config.h.pre \
 		   eqn.7 \
@@ -179,6 +182,13 @@ LIBMANDOC_LNS	 = $(LIBMAN_LNS) \
 		   mandoc.ln \
 		   read.ln
 
+COMPAT_OBJS	 = compat_getsubopt.o \
+		   compat_strlcat.o \
+		   compat_strlcpy.o
+COMPAT_LNS	 = compat_getsubopt.ln \
+		   compat_strlcat.ln \
+		   compat_strlcpy.ln
+
 arch.o arch.ln: arch.in
 att.o att.ln: att.in
 chars.o chars.ln: chars.in
@@ -193,6 +203,8 @@ $(LIBMDOC_OBJS) $(LIBMDOC_LNS): libmdoc.h
 $(LIBROFF_OBJS) $(LIBROFF_LNS): libroff.h
 $(LIBMANDOC_OBJS) $(LIBMANDOC_LNS): mandoc.h mdoc.h man.h libmandoc.h config.h
 
+$(COMPAT_OBJS) $(COMPAT_LNS): config.h
+
 MANDOC_HTML_OBJS = eqn_html.o \
 		   html.o \
 		   man_html.o \
@@ -234,8 +246,6 @@ $(MANDOC_HTML_OBJS) $(MANDOC_HTML_LNS): html.h
 $(MANDOC_TERM_OBJS) $(MANDOC_TERM_LNS): term.h
 $(MANDOC_OBJS) $(MANDOC_LNS): main.h mandoc.h mdoc.h man.h config.h out.h
 
-compat.o compat.ln: config.h
-
 MANDOCDB_OBJS	 = mandocdb.o
 MANDOCDB_LNS	 = mandocdb.ln
 
@@ -319,8 +329,8 @@ clean:
 	rm -f llib-lpreconv.ln $(PRECONV_LNS)
 	rm -f mandoc $(MANDOC_OBJS)
 	rm -f llib-lmandoc.ln $(MANDOC_LNS)
-	rm -f config.h config.log compat.o compat.ln
-	rm -f mdocml.tar.gz
+	rm -f config.h config.log $(COMPAT_OBJS) $(COMPAT_LNS)
+	rm -f mdocml.tar.gz mdocml.zip
 	rm -f index.html $(INDEX_OBJS)
 
 install: all
@@ -350,11 +360,11 @@ installwww: www
 	$(INSTALL_DATA) mdocml.tar.gz $(PREFIX)/snapshots/mdocml-$(VERSION).tar.gz
 	$(INSTALL_DATA) mdocml.md5 $(PREFIX)/snapshots/mdocml-$(VERSION).md5
 
-libmandoc.a: compat.o $(LIBMANDOC_OBJS)
-	$(AR) rs $@ compat.o $(LIBMANDOC_OBJS)
+libmandoc.a: $(COMPAT_OBJS) $(LIBMANDOC_OBJS)
+	$(AR) rs $@ $(COMPAT_OBJS) $(LIBMANDOC_OBJS)
 
-llib-llibmandoc.ln: compat.ln $(LIBMANDOC_LNS)
-	$(LINT) $(LINTFLAGS) -Clibmandoc compat.ln $(LIBMANDOC_LNS)
+llib-llibmandoc.ln: $(COMPAT_LNS) $(LIBMANDOC_LNS)
+	$(LINT) $(LINTFLAGS) -Clibmandoc $(COMPAT_LNS) $(LIBMANDOC_LNS)
 
 mandoc: $(MANDOC_OBJS) libmandoc.a
 	$(CC) -o $@ $(MANDOC_OBJS) libmandoc.a
@@ -383,12 +393,30 @@ mdocml.tar.gz: $(SRCS)
 	( cd .dist/ && tar zcf ../$@ ./ )
 	rm -rf .dist/
 
+mdocml.zip: $(SRCS)
+	mkdir -p .win32/mdocml-$(VERSION)/
+	$(INSTALL_SOURCE) $(SRCS) .win32
+	cp .win32/Makefile .win32/Makefile.old
+	grep -v DUSE_WCHAR .win32/Makefile.old >.win32/Makefile
+	( cd .win32; CC=i586-mingw32msvc-cc AR=i586-mingw32msvc-ar CFLAGS='-DOSNAME=\"Windows\"' make; \
+		make install PREFIX=mdocml-$(VERSION) ; \
+		zip -r ../$@ mdocml-$(VERSION) )
+	rm -rf .win32
+
 index.html: $(INDEX_OBJS)
 
 config.h: config.h.pre config.h.post
 	rm -f config.log
 	( cat config.h.pre; \
 	  echo; \
+	  if $(CC) $(CFLAGS) -Werror -o test-strptime test-strptime.c >> config.log 2>&1; then \
+		echo '#define HAVE_STRPTIME'; \
+		rm test-strptime; \
+	  fi; \
+	  if $(CC) $(CFLAGS) -Werror -o test-getsubopt test-getsubopt.c >> config.log 2>&1; then \
+		echo '#define HAVE_GETSUBOPT'; \
+		rm test-getsubopt; \
+	  fi; \
 	  if $(CC) $(CFLAGS) -Werror -o test-strlcat test-strlcat.c >> config.log 2>&1; then \
 		echo '#define HAVE_STRLCAT'; \
 		rm test-strlcat; \
diff --git a/compat_getsubopt.c b/compat_getsubopt.c
new file mode 100644
index 00000000..1a7ec6e8
--- /dev/null
+++ b/compat_getsubopt.c
@@ -0,0 +1,100 @@
+#ifdef HAVE_GETSUBOPT
+
+int dummy;
+
+#else
+
+/*	$OpenBSD: getsubopt.c,v 1.4 2005/08/08 08:05:36 espie Exp $	*/
+
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <unistd.h>
+#include <stdlib.h>
+#include <string.h>
+
+/*
+ * The SVID interface to getsubopt provides no way of figuring out which
+ * part of the suboptions list wasn't matched.  This makes error messages
+ * tricky...  The extern variable suboptarg is a pointer to the token
+ * which didn't match.
+ */
+char *suboptarg;
+
+int
+getsubopt(char **optionp, char * const *tokens, char **valuep)
+{
+	int cnt;
+	char *p;
+
+	suboptarg = *valuep = NULL;
+
+	if (!optionp || !*optionp)
+		return(-1);
+
+	/* skip leading white-space, commas */
+	for (p = *optionp; *p && (*p == ',' || *p == ' ' || *p == '\t'); ++p);
+
+	if (!*p) {
+		*optionp = p;
+		return(-1);
+	}
+
+	/* save the start of the token, and skip the rest of the token. */
+	for (suboptarg = p;
+	    *++p && *p != ',' && *p != '=' && *p != ' ' && *p != '\t';);
+
+	if (*p) {
+		/*
+		 * If there's an equals sign, set the value pointer, and
+		 * skip over the value part of the token.  Terminate the
+		 * token.
+		 */
+		if (*p == '=') {
+			*p = '\0';
+			for (*valuep = ++p;
+			    *p && *p != ',' && *p != ' ' && *p != '\t'; ++p);
+			if (*p) 
+				*p++ = '\0';
+		} else
+			*p++ = '\0';
+		/* Skip any whitespace or commas after this token. */
+		for (; *p && (*p == ',' || *p == ' ' || *p == '\t'); ++p);
+	}
+
+	/* set optionp for next round. */
+	*optionp = p;
+
+	for (cnt = 0; *tokens; ++tokens, ++cnt)
+		if (!strcmp(suboptarg, *tokens))
+			return(cnt);
+	return(-1);
+}
+
+#endif
diff --git a/compat.c b/compat_strlcat.c
index f00cc5c6..ba9196da 100644
--- a/compat.c
+++ b/compat_strlcat.c
@@ -1,3 +1,9 @@
+#ifdef HAVE_STRLCAT
+
+int dummy;
+
+#else
+
 /*	$OpenBSD: strlcat.c,v 1.13 2005/08/08 08:05:37 espie Exp $	*/
 
 /*
@@ -15,16 +21,10 @@
  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
 
 #include <sys/types.h>
 #include <string.h>
 
-int dummy; /* To prevent an empty object file */
-
-#ifndef HAVE_STRLCAT
 /*
  * Appends src to string dst of size siz (unlike strncat, siz is the
  * full size of dst, not space left).  At most siz-1 characters
@@ -59,37 +59,5 @@ strlcat(char *dst, const char *src, size_t siz)
 
 	return(dlen + (s - src));	/* count does not include NUL */
 }
-#endif
 
-#ifndef HAVE_STRLCPY
-/*
- * Copy src to string dst of size siz.  At most siz-1 characters
- * will be copied.  Always NUL terminates (unless siz == 0).
- * Returns strlen(src); if retval >= siz, truncation occurred.
- */
-size_t
-strlcpy(char *dst, const char *src, size_t siz)
-{
-	char *d = dst;
-	const char *s = src;
-	size_t n = siz;
-
-	/* Copy as many bytes as will fit */
-	if (n != 0) {
-		while (--n != 0) {
-			if ((*d++ = *s++) == '\0')
-				break;
-		}
-	}
-
-	/* Not enough room in dst, add NUL and traverse rest of src */
-	if (n == 0) {
-		if (siz != 0)
-			*d = '\0';		/* NUL-terminate dst */
-		while (*s++)
-			;
-	}
-
-	return(s - src - 1);	/* count does not include NUL */
-}
-#endif 
+#endif
diff --git a/compat_strlcpy.c b/compat_strlcpy.c
new file mode 100644
index 00000000..f56f2d85
--- /dev/null
+++ b/compat_strlcpy.c
@@ -0,0 +1,59 @@
+#ifdef HAVE_STRLCPY
+
+int dummy;
+
+#else
+
+/*	$OpenBSD: strlcpy.c,v 1.11 2006/05/05 15:27:38 millert Exp $	*/
+
+/*
+ * Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <sys/types.h>
+#include <string.h>
+
+/*
+ * Copy src to string dst of size siz.  At most siz-1 characters
+ * will be copied.  Always NUL terminates (unless siz == 0).
+ * Returns strlen(src); if retval >= siz, truncation occurred.
+ */
+size_t
+strlcpy(char *dst, const char *src, size_t siz)
+{
+	char *d = dst;
+	const char *s = src;
+	size_t n = siz;
+
+	/* Copy as many bytes as will fit */
+	if (n != 0) {
+		while (--n != 0) {
+			if ((*d++ = *s++) == '\0')
+				break;
+		}
+	}
+
+	/* Not enough room in dst, add NUL and traverse rest of src */
+	if (n == 0) {
+		if (siz != 0)
+			*d = '\0';		/* NUL-terminate dst */
+		while (*s++)
+			;
+	}
+
+	return(s - src - 1);	/* count does not include NUL */
+}
+
+#endif
diff --git a/config.h.post b/config.h.post
index 81c01b93..3cdf9a78 100644
--- a/config.h.post
+++ b/config.h.post
@@ -21,5 +21,9 @@ extern	size_t	  strlcat(char *, const char *, size_t);
 #ifndef HAVE_STRLCPY
 extern	size_t	  strlcpy(char *, const char *, size_t);
 #endif
+#ifndef HAVE_GETSUBOPT
+extern	int	  getsubopt(char **, char * const *, char **);
+extern	char	 *suboptarg;
+#endif
 
 #endif /* MANDOC_CONFIG_H */
diff --git a/man_hash.c b/man_hash.c
index 10fa18c2..95e7c790 100644
--- a/man_hash.c
+++ b/man_hash.c
@@ -33,7 +33,7 @@
 #define	HASH_DEPTH	 6
 
 #define	HASH_ROW(x) do { \
-		if (isupper((u_char)(x))) \
+		if (isupper((unsigned char)(x))) \
 			(x) -= 65; \
 		else \
 			(x) -= 97; \
@@ -47,7 +47,7 @@
  * macro (the integer value of the enum stored as a char to save a bit
  * of space).
  */
-static	u_char		 table[26 * HASH_DEPTH];
+static	unsigned char	 table[26 * HASH_DEPTH];
 
 /*
  * XXX - this hash has global scope, so if intended for use as a library
@@ -66,13 +66,13 @@ man_hash_init(void)
 	for (i = 0; i < (int)MAN_MAX; i++) {
 		x = man_macronames[i][0];
 
-		assert(isalpha((u_char)x));
+		assert(isalpha((unsigned char)x));
 
 		HASH_ROW(x);
 
 		for (j = 0; j < HASH_DEPTH; j++)
 			if (UCHAR_MAX == table[x + j]) {
-				table[x + j] = (u_char)i;
+				table[x + j] = (unsigned char)i;
 				break;
 			}
 
@@ -89,7 +89,7 @@ man_hash_find(const char *tmp)
 
 	if ('\0' == (x = tmp[0]))
 		return(MAN_MAX);
-	if ( ! (isalpha((u_char)x)))
+	if ( ! (isalpha((unsigned char)x)))
 		return(MAN_MAX);
 
 	HASH_ROW(x);
diff --git a/man_validate.c b/man_validate.c
index 27381cf8..257bb6de 100644
--- a/man_validate.c
+++ b/man_validate.c
@@ -412,7 +412,8 @@ post_TH(CHKARGS)
 	if (n && n->string) {
 		for (p = n->string; '\0' != *p; p++) {
 			/* Only warn about this once... */
-			if (isalpha((u_char)*p) && ! isupper((u_char)*p)) {
+			if (isalpha((unsigned char)*p) && 
+					! isupper((unsigned char)*p)) {
 				man_nmsg(m, n, MANDOCERR_UPPERCASE);
 				break;
 			}
diff --git a/mandoc.c b/mandoc.c
index 0f8e5394..c08465ff 100644
--- a/mandoc.c
+++ b/mandoc.c
@@ -542,7 +542,10 @@ a2time(time_t *t, const char *fmt, const char *p)
 
 	memset(&tm, 0, sizeof(struct tm));
 
+	pp = NULL;
+#ifdef	HAVE_STRPTIME
 	pp = strptime(p, fmt, &tm);
+#endif
 	if (NULL != pp && '\0' == *pp) {
 		*t = mktime(&tm);
 		return(1);
@@ -554,12 +557,12 @@ a2time(time_t *t, const char *fmt, const char *p)
 static char *
 time2a(time_t t)
 {
-	struct tm	 tm;
+	struct tm	*tm;
 	char		*buf, *p;
 	size_t		 ssz;
 	int		 isz;
 
-	localtime_r(&t, &tm);
+	tm = localtime(&t);
 
 	/*
 	 * Reserve space:
@@ -569,15 +572,15 @@ time2a(time_t t)
 	 */
 	p = buf = mandoc_malloc(10 + 4 + 4 + 1);
 
-	if (0 == (ssz = strftime(p, 10 + 1, "%B ", &tm)))
+	if (0 == (ssz = strftime(p, 10 + 1, "%B ", tm)))
 		goto fail;
 	p += (int)ssz;
 
-	if (-1 == (isz = snprintf(p, 4 + 1, "%d, ", tm.tm_mday)))
+	if (-1 == (isz = snprintf(p, 4 + 1, "%d, ", tm->tm_mday)))
 		goto fail;
 	p += isz;
 
-	if (0 == strftime(p, 4 + 1, "%Y", &tm))
+	if (0 == strftime(p, 4 + 1, "%Y", tm))
 		goto fail;
 	return(buf);
 
diff --git a/mdoc_hash.c b/mdoc_hash.c
index 88c10331..9aad261a 100644
--- a/mdoc_hash.c
+++ b/mdoc_hash.c
@@ -31,7 +31,7 @@
 #include "mandoc.h"
 #include "libmdoc.h"
 
-static	u_char		 table[27 * 12];
+static	unsigned char	 table[27 * 12];
 
 /*
  * XXX - this hash has global scope, so if intended for use as a library
@@ -48,14 +48,14 @@ mdoc_hash_init(void)
 	for (i = 0; i < (int)MDOC_MAX; i++) {
 		p = mdoc_macronames[i];
 
-		if (isalpha((u_char)p[1]))
-			major = 12 * (tolower((u_char)p[1]) - 97);
+		if (isalpha((unsigned char)p[1]))
+			major = 12 * (tolower((unsigned char)p[1]) - 97);
 		else
 			major = 12 * 26;
 
 		for (j = 0; j < 12; j++)
 			if (UCHAR_MAX == table[major + j]) {
-				table[major + j] = (u_char)i;
+				table[major + j] = (unsigned char)i;
 				break;
 			}
 
@@ -70,11 +70,11 @@ mdoc_hash_find(const char *p)
 
 	if (0 == p[0])
 		return(MDOC_MAX);
-	if ( ! isalpha((u_char)p[0]) && '%' != p[0])
+	if ( ! isalpha((unsigned char)p[0]) && '%' != p[0])
 		return(MDOC_MAX);
 
-	if (isalpha((u_char)p[1]))
-		major = 12 * (tolower((u_char)p[1]) - 97);
+	if (isalpha((unsigned char)p[1]))
+		major = 12 * (tolower((unsigned char)p[1]) - 97);
 	else if ('1' == p[1])
 		major = 12 * 26;
 	else 
diff --git a/mdoc_validate.c b/mdoc_validate.c
index c3198c0d..f8ea5b6a 100644
--- a/mdoc_validate.c
+++ b/mdoc_validate.c
@@ -2046,7 +2046,7 @@ post_dt(POST_ARGS)
 
 	if (NULL != (nn = n->child))
 		for (p = nn->string; *p; p++) {
-			if (toupper((u_char)*p) == *p)
+			if (toupper((unsigned char)*p) == *p)
 				continue;
 
 			/* 
diff --git a/out.c b/out.c
index ebd85c7d..ee4217c1 100644
--- a/out.c
+++ b/out.c
@@ -69,7 +69,7 @@ a2roffsu(const char *src, struct roffsu *dst, enum roffscale def)
 		return(0);
 
 	while (i < BUFSIZ) {
-		if ( ! isdigit((u_char)*src)) {
+		if ( ! isdigit((unsigned char)*src)) {
 			if ('.' != *src)
 				break;
 			else if (hasd)
diff --git a/preconv.c b/preconv.c
index fcb50790..b2f031bc 100644
--- a/preconv.c
+++ b/preconv.c
@@ -18,8 +18,10 @@
 #include "config.h"
 #endif
 
+#ifdef HAVE_MMAP
 #include <sys/stat.h>
 #include <sys/mman.h>
+#endif
 
 #include <assert.h>
 #include <fcntl.h>
@@ -244,10 +246,11 @@ static int
 read_whole_file(const char *f, int fd, 
 		struct buf *fb, int *with_mmap)
 {
-	struct stat	 st;
 	size_t		 off;
 	ssize_t		 ssz;
 
+#ifdef	HAVE_MMAP
+	struct stat	 st;
 	if (-1 == fstat(fd, &st)) {
 		perror(f);
 		return(0);
@@ -273,6 +276,7 @@ read_whole_file(const char *f, int fd,
 		if (fb->buf != MAP_FAILED)
 			return(1);
 	}
+#endif
 
 	/*
 	 * If this isn't a regular file (like, say, stdin), then we must
@@ -510,9 +514,11 @@ main(int argc, char *argv[])
 
 	rc = EXIT_SUCCESS;
 out:
+#ifdef	HAVE_MMAP
 	if (map)
 		munmap(b.buf, b.sz);
 	else 
+#endif
 		free(b.buf);
 
 	if (fd > STDIN_FILENO)
diff --git a/test-getsubopt.c b/test-getsubopt.c
new file mode 100644
index 00000000..25e11246
--- /dev/null
+++ b/test-getsubopt.c
@@ -0,0 +1,12 @@
+#if defined(__linux__) || defined(__MINT__)
+# define _GNU_SOURCE /* getsubopt() */
+#endif
+
+#include <stdlib.h>
+
+int
+main(int argc, char **argv)
+{
+	getsubopt(argv, argv, argv);
+	return 0;
+}
diff --git a/test-strptime.c b/test-strptime.c
new file mode 100644
index 00000000..976e9c80
--- /dev/null
+++ b/test-strptime.c
@@ -0,0 +1,13 @@
+#if defined(__linux__) || defined(__MINT__)
+# define _GNU_SOURCE /* strptime(), getsubopt() */
+#endif
+
+#include <time.h>
+
+int
+main(int argc, char **argv)
+{
+	struct tm tm;
+	strptime(*argv, "%D", &tm);
+	return 0;
+}