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* [newlib-cygwin] newlib: don't use __visibility__ attrribute on Cygwin
@ 2018-08-08 8:53 Corinna Vinschen
0 siblings, 0 replies; only message in thread
From: Corinna Vinschen @ 2018-08-08 8:53 UTC (permalink / raw)
To: newlib-cvs
https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin.git;h=054ff18f5f7fd3baa696656949d4cad74e465cf7
commit 054ff18f5f7fd3baa696656949d4cad74e465cf7
Author: Corinna Vinschen <corinna@vinschen.de>
Date: Wed Aug 8 10:44:38 2018 +0200
newlib: don't use __visibility__ attrribute on Cygwin
gcc doesn't support visibility attribute on PE/COFF platforms
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Diff:
---
newlib/libm/common/math_config.h | 9 +++++++--
1 file changed, 7 insertions(+), 2 deletions(-)
diff --git a/newlib/libm/common/math_config.h b/newlib/libm/common/math_config.h
index cca682e..f28c52b 100644
--- a/newlib/libm/common/math_config.h
+++ b/newlib/libm/common/math_config.h
@@ -235,17 +235,22 @@ eval_as_double (double x)
}
#ifdef __GNUC__
-# define HIDDEN __attribute__ ((__visibility__ ("hidden")))
# define NOINLINE __attribute__ ((noinline))
# define likely(x) __builtin_expect (!!(x), 1)
# define unlikely(x) __builtin_expect (x, 0)
#else
-# define HIDDEN
# define NOINLINE
# define likely(x) (x)
# define unlikely(x) (x)
#endif
+/* gcc emitting PE/COFF doesn't support visibility */
+#if defined (__GNUC__) && !defined (__CYGWIN__)
+# define HIDDEN __attribute__ ((__visibility__ ("hidden")))
+#else
+# define HIDDEN
+#endif
+
/* Error handling tail calls for special cases, with a sign argument.
The sign of the return value is set if the argument is non-zero. */
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