fork() is not available on noMMU platforms, but in the specific case
of pcm_direct.c, vfork() can be used instead. This commit adds an
autoconf check for fork(), and falls back to vfork() is fork() is not
available.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@xxxxxxxxxxx>
---
configure.ac | 2 ++
src/pcm/pcm_direct.c | 10 +++++++++-
2 files changed, 11 insertions(+), 1 deletion(-)
diff --git a/configure.ac b/configure.ac
index 4c9d860f..ab659490 100644
--- a/configure.ac
+++ b/configure.ac
@@ -51,6 +51,8 @@ dnl Checks for library functions.
AC_PROG_GCC_TRADITIONAL
AC_CHECK_FUNCS([uselocale])
+AC_CHECK_FUNC([fork])
+
SAVE_LIBRARY_VERSION
AC_SUBST(LIBTOOL_VERSION_INFO)
diff --git a/src/pcm/pcm_direct.c b/src/pcm/pcm_direct.c
index 2b07eff9..4dc3ea26 100644
--- a/src/pcm/pcm_direct.c
+++ b/src/pcm/pcm_direct.c
@@ -431,13 +431,21 @@ int snd_pcm_direct_server_create(snd_pcm_direct_t *dmix)
close(dmix->server_fd);
return ret;
}
-
+
+#ifdef HAVE_FORK
ret = fork();
+#else
+ ret = vfork();
+#endif
if (ret < 0) {
close(dmix->server_fd);
return ret;
} else if (ret == 0) {
+#ifdef HAVE_FORK
ret = fork();
+#else
+ ret = vfork();
+#endif
if (ret == 0)
server_job(dmix);
_exit(EXIT_SUCCESS);
--
2.14.4
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