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-rw-r--r--include/libbb.h6
-rw-r--r--include/platform.h6
-rw-r--r--libbb/getpty.c2
3 files changed, 13 insertions, 1 deletions
diff --git a/include/libbb.h b/include/libbb.h
index 6e37b8d..aa7944a 100644
--- a/include/libbb.h
+++ b/include/libbb.h
@@ -38,6 +38,12 @@
#include <time.h>
#include <unistd.h>
#include <sys/param.h>
+#ifndef HAVE_CLEARENV
+# define clearenv() do { if (environ) environ[0] = NULL; } while (0)
+#endif
+#ifndef HAVE_FDATASYNC
+# define fdatasync fsync
+#endif
#ifdef HAVE_MNTENT_H
# include <mntent.h>
#endif
diff --git a/include/platform.h b/include/platform.h
index bbbc0a9..2bc88c3 100644
--- a/include/platform.h
+++ b/include/platform.h
@@ -10,9 +10,12 @@
/* Assume all these functions exist by default. Platforms where it is not
* true will #undef them below.
*/
+#define HAVE_CLEARENV 1
+#define HAVE_FDATASYNC 1
#define HAVE_FDPRINTF 1
#define HAVE_MEMRCHR 1
#define HAVE_MKDTEMP 1
+#define HAVE_PTSNAME_R 1
#define HAVE_SETBIT 1
#define HAVE_SIGHANDLER_T 1
#define HAVE_STRCASESTR 1
@@ -253,7 +256,10 @@ typedef uint32_t bb__aliased_uint32_t FIX_ALIASING;
#if (defined __digital__ && defined __unix__) \
|| defined __APPLE__ \
|| defined __FreeBSD__ || defined __OpenBSD__ || defined __NetBSD__
+# undef HAVE_CLEARENV
+# undef HAVE_FDATASYNC
# undef HAVE_MNTENT_H
+# undef HAVE_PTSNAME_R
# undef HAVE_SYS_STATFS_H
# undef HAVE_SIGHANDLER_T
#else
diff --git a/libbb/getpty.c b/libbb/getpty.c
index ea653b0..6a15cff 100644
--- a/libbb/getpty.c
+++ b/libbb/getpty.c
@@ -19,7 +19,7 @@ int FAST_FUNC xgetpty(char *line)
if (p > 0) {
grantpt(p); /* chmod+chown corresponding slave pty */
unlockpt(p); /* (what does this do?) */
-#if 0 /* if ptsname_r is not available... */
+#ifndef HAVE_PTSNAME_R
const char *name;
name = ptsname(p); /* find out the name of slave pty */
if (!name) {