diff --git a/configure.ac b/configure.ac index a440c33732..20344c2ed5 100644 --- a/configure.ac +++ b/configure.ac @@ -981,6 +981,8 @@ AC_CHECK_DECLS([strnlen]) dnl Check for daemon(3), unrelated to --with-daemon (although used by it) AC_CHECK_DECLS([daemon]) +AC_CHECK_DECLS([pipe2]) + AC_CHECK_DECLS([le16toh, le32toh, le64toh, htole16, htole32, htole64, be16toh, be32toh, be64toh, htobe16, htobe32, htobe64],,, [#if HAVE_ENDIAN_H #include @@ -1185,6 +1187,7 @@ AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include ]], [ AC_MSG_RESULT(yes); HAVE_O_CLOEXEC=1 ], [ AC_MSG_RESULT(no); HAVE_O_CLOEXEC=0 ] ) +AC_DEFINE_UNQUOTED([HAVE_O_CLOEXEC], [$HAVE_O_CLOEXEC], [Define to 1 if O_CLOEXEC flag is available.]) dnl crc32c platform checks AC_MSG_CHECKING(for __builtin_prefetch) diff --git a/src/shutdown.cpp b/src/shutdown.cpp index f835833f38..ea6bf9119f 100644 --- a/src/shutdown.cpp +++ b/src/shutdown.cpp @@ -50,7 +50,7 @@ static int g_shutdown_pipe[2] = {-1, -1}; bool InitShutdownState() { #ifndef WIN32 -#if HAVE_O_CLOEXEC +#if HAVE_O_CLOEXEC && HAVE_DECL_PIPE2 // If we can, make sure that the file descriptors are closed on exec() // to prevent interference. if (pipe2(g_shutdown_pipe, O_CLOEXEC) != 0) {