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[glibc] <sys/cdefs.h>: Add __glibc_has_include macro
- From: Florian Weimer <fw at sourceware dot org>
- To: glibc-cvs at sourceware dot org
- Date: 12 Jun 2019 11:04:59 -0000
- Subject: [glibc] <sys/cdefs.h>: Add __glibc_has_include macro
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=4e75c2a43bb3208f32556a2b19c939cfe1f54ba6
commit 4e75c2a43bb3208f32556a2b19c939cfe1f54ba6
Author: Florian Weimer <fweimer@redhat.com>
Date: Wed Jun 12 10:41:19 2019 +0200
<sys/cdefs.h>: Add __glibc_has_include macro
Diff:
---
ChangeLog | 4 ++++
misc/sys/cdefs.h | 6 ++++++
2 files changed, 10 insertions(+)
diff --git a/ChangeLog b/ChangeLog
index 01fc098..0033023 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+2019-06-12 Florian Weimer <fweimer@redhat.com>
+
+ * misc/sys/cdefs.h (__glibc_has_include): Define.
+
2019-06-12 Wilco Dijkstra <wdijkstr@arm.com>
* string/memmem.c (__memmem): Rewrite to improve performance.
diff --git a/misc/sys/cdefs.h b/misc/sys/cdefs.h
index b169537..638872b 100644
--- a/misc/sys/cdefs.h
+++ b/misc/sys/cdefs.h
@@ -412,6 +412,12 @@
# define __glibc_has_attribute(attr) 0
#endif
+#ifdef __has_include
+# define __glibc_has_include(header) __has_include (header)
+#else
+# define __glibc_has_include(header) 0
+#endif
+
#if (!defined _Noreturn \
&& (defined __STDC_VERSION__ ? __STDC_VERSION__ : 0) < 201112 \
&& !__GNUC_PREREQ (4,7))