Use getprogname(3) rather than __progname.

Suggested by Joerg@ Sonnenberger (NetBSD).
Last year, deraadt@ confirmed on tech@ that this "has the potential
to be more portable", and micro-optimizing for speed is not relevant
here.  Also gets rid of one global variable.

1 files changed, 5 insertions, 1 deletions

diff --git a/configure b/configure
index 7bafcdde..8d9e525f 100755
--- a/configure
+++ b/configure
@@ -290,7 +290,6 @@ echo
 echo "#define MAN_CONF_FILE \"/etc/${MANM_MANCONF}\""
 echo "#define MANPATH_DEFAULT \"${MANPATH_DEFAULT}\""
 [ -n "${OSNAME}" ] && echo "#define OSNAME \"${OSNAME}\""
-[ ${HAVE_PROGNAME} -eq 0 ] && echo "#define __progname mandoc_progname"
 [ -n "${HOMEBREWDIR}" ] && echo "#define HOMEBREWDIR \"${HOMEBREWDIR}\""
 
 cat << __HEREDOC__
@@ -359,6 +358,11 @@ fi
 [ ${HAVE_MKDTEMP} -eq 0 ] && \
 	echo "extern	char	 *mkdtemp(char *);"
 
+if [ ${HAVE_PROGNAME} -eq 0 ]; then
+	echo "extern 	const char *getprogname(void);"
+	echo "extern	void	  setprogname(const char *);"
+fi
+
 [ ${HAVE_REALLOCARRAY} -eq 0 ] && \
 	echo "extern	void	 *reallocarray(void *, size_t, size_t);"