spawn: Fix build without CLOSE_RANGE_CLOEXEC

Only call close_range() when CLOSE_RANGE_CLOEXEC is defined.
Fixes the build on non-linux.

Fixes: https://gitlab.gnome.org/GNOME/vte/-/issues/2544

1 files changed, 2 insertions, 0 deletions

diff --git a/src/spawn.cc b/src/spawn.cc
index fd0ec654..e231105c 100644
--- a/src/spawn.cc
+++ b/src/spawn.cc
@@ -68,6 +68,7 @@ set_cloexec_cb(void* data,
 static int
 cloexec_from(int fd)
 {
+#ifdef CLOSE_RANGE_CLOEXEC
         /* First, try close_range(CLOEXEC) which is faster than the methods
          * below, and works even if /proc is not available.
          */
@@ -78,6 +79,7 @@ cloexec_from(int fd)
             errno != ENOSYS /* old kernel, or not supported on this platform */ &&
             errno != EINVAL /* flags not supported */)
                 return res;
+#endif /* CLOSE_RANGE_CLOEXEC */
 
         /* Fall back to fdwalk */
         return fdwalk(set_cloexec_cb, &fd);