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| author | Chris Metcalf <cmetcalf@ezchip.com> | 2015-12-01 14:59:38 -0500 |
|---|---|---|
| committer | Chris Metcalf <cmetcalf@ezchip.com> | 2015-12-03 13:00:46 -0500 |
| commit | e59c94fa0e2871bdfcc363899e3be376c0def770 (patch) | |
| tree | 4073066d0031614fe8947c997354d0d3758f6602 /sysdeps/arm/math_private.h | |
| parent | b3f6040781f78af648fc90f67cec3e49a338b3e9 (diff) | |
| download | glibc-e59c94fa0e2871bdfcc363899e3be376c0def770.tar.gz glibc-e59c94fa0e2871bdfcc363899e3be376c0def770.tar.xz glibc-e59c94fa0e2871bdfcc363899e3be376c0def770.zip | |
math: add LDBL_CLASSIFY_COMPAT support
If a platform does not define "long-double-fcts = yes" in its Makefiles and it does define __NO_LONG_DOUBLE_MATH in its installed headers, it will currently create exported symbols for __finitel, __isinfl, and __isnanl that can't be reached from userspace by correct use of the finite(), isinf(), or isnan() macros in <math.h>. To avoid this situation, by default for such platforms we now no longer export these symbols, thus causing appropriate link-time errors. However, for platforms that previously exported these symbols, we continue to do so as compat symbols; this is enabled by adding LDBL_CLASSIFY_COMPAT to math_private.h for the platform. For tile, remove the now-unnecessary exports of those functions from libc and libm.
Diffstat (limited to 'sysdeps/arm/math_private.h')
| -rw-r--r-- | sysdeps/arm/math_private.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/sysdeps/arm/math_private.h b/sysdeps/arm/math_private.h index c175b15601..d39e9ee24a 100644 --- a/sysdeps/arm/math_private.h +++ b/sysdeps/arm/math_private.h @@ -1,6 +1,10 @@ #ifndef ARM_MATH_PRIVATE_H #define ARM_MATH_PRIVATE_H 1 +/* Enable __finitel, __isinfl, and __isnanl for binary compatibility + when built without long double support. */ +#define LDBL_CLASSIFY_COMPAT 1 + #include "fenv_private.h" #include_next <math_private.h> |