[Minios-devel] [UNIKRAFT/NEWLIB PATCH] Fix __rtems__ usage in glue code headers

[Costin Lupu <costin.lupu@xxxxxxxxx>]

In order to use __rtems__ one has to define it in all affected headers.
Besides 'sys/stat.h', we also identified 'time.h'. Moreover, we define
__rtems__ only if it was not previously defined.

Signed-off-by: Costin Lupu <costin.lupu@xxxxxxxxx>
---
 include/sys/stat.h | 12 +++++++++---
 include/time.h     | 13 +++++++++++++
 2 files changed, 22 insertions(+), 3 deletions(-)

diff --git a/include/sys/stat.h b/include/sys/stat.h
index c87a29b..f70f698 100644
--- a/include/sys/stat.h
+++ b/include/sys/stat.h
@@ -1,13 +1,19 @@
 #ifndef _NEWLIB_GLUE_SYS_STAT_H_
 #define _NEWLIB_GLUE_SYS_STAT_H_
 
-#ifdef __rtems__
-#error "Unexpected definition of __rtems__. Please revisit this header 
wrapper."
+/* define __rtems__ only if not previously defined */
+#ifndef __rtems__
+#define __undef_rtems__
+#define __rtems__
 #endif
 
-#define __rtems__
 #include_next <sys/stat.h>
+
+/* cleanup __rtems__ */
+#ifdef __undef_rtems__
 #undef __rtems__
+#undef __undef_rtems__
+#endif
 
 #define UTIME_NOW  0x3fffffff
 #define UTIME_OMIT 0x3ffffffe
diff --git a/include/time.h b/include/time.h
index e8201a0..52ca5e0 100644
--- a/include/time.h
+++ b/include/time.h
@@ -41,6 +41,19 @@
  * such as nanosleep
  */
 #define _POSIX_TIMERS 1
+
+/* define __rtems__ only if not previously defined */
+#ifndef __rtems__
+#define __undef_rtems__
+#define __rtems__
+#endif
+
 #include_next <time.h>
 
+/* cleanup __rtems__ */
+#ifdef __undef_rtems__
+#undef __rtems__
+#undef __undef_rtems__
+#endif
+
 #endif /* NEWLIBGLUE_TIME_H */
-- 
2.11.0


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