From fb0d39dfc31a934d20e470f91260041e257ba82a Mon Sep 17 00:00:00 2001
From: CismonX <admin@cismon.net>
Date: Tue, 17 Jun 2025 12:24:08 +0800
Subject: [PATCH] defs: remove `HAVE_PIPE2` macro

This feature check is only used in `xpipe2()`.
---
 src/defs.h | 4 ----
 src/xstd.c | 6 +++---
 2 files changed, 3 insertions(+), 7 deletions(-)

diff --git a/src/defs.h b/src/defs.h
index dbb2020..33b0ce7 100644
--- a/src/defs.h
+++ b/src/defs.h
@@ -92,10 +92,6 @@
 #  define UNUSED_VAR(name)  name##_unused_ VARATTR_UNUSED_
 #endif  /* defined(HAVE_STDC_23) */
 
-#if defined(__FreeBSD__) || (defined(__linux__) && defined(_GNU_SOURCE))
-#  define HAVE_PIPE2  1
-#endif
-
 #ifndef __FreeBSD__
 #  define O_RESOLVE_BENEATH  0
 #  define PROT_MAX(prot)     0
diff --git a/src/xstd.c b/src/xstd.c
index d815644..e4b5053 100644
--- a/src/xstd.c
+++ b/src/xstd.c
@@ -111,14 +111,14 @@ xpipe2 (
     int pipefd[2],
     int flags
 ) {
-#ifdef HAVE_PIPE2
+#if defined(__FreeBSD__) || (defined(__linux__) && defined(_GNU_SOURCE))
     if (0 != pipe2(pipefd, flags)) {
         log_printf("pipe2(): %s", xstrerror(errno));
         return -1;
     }
     return 0;
 
-#else  /* !defined(HAVE_PIPE2) */
+#else
     if (0 != pipe(pipefd)) {
         log_printf("pipe(): %s", xstrerror(errno));
         return -1;
@@ -147,7 +147,7 @@ xpipe2 (
     close(pipefd[1]);
     return -1;
 
-#endif  /* defined(HAVE_PIPE2) */
+#endif
 }
 
 void *