Commit 7ed04d21 authored by Arnout Vandecappelle's avatar Arnout Vandecappelle Committed by Peter Korsgaard
Browse files

python-numpy: uClibc patch to avoid ldexpl and frexpl 



It turns out that uClibc only enables the long double math functions
for some architectures (god know why, so what if long double is the
same as double, these functions should still be defined). Since
python-numpy links with those functions, the module will fail to load
on ARM, MIPS and SH.

However, python-numpy actually checks for each function if it is really
available. Only, it overrides that check for ldexpl and frexpl when
long double is the same as double (i.e. in exactly the case the uClibc
doesn't have these functions).

So add another exception for this.

Upstream-status: not applicable (code has changed too much)

Signed-off-by: default avatarArnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Acked-by: default avatarGustavo Zacarias <gustavo@zacarias.com.ar>
Tested-by: default avatarGustavo Zacarias <gustavo@zacarias.com.ar>
Signed-off-by: default avatarPeter Korsgaard <peter@korsgaard.com>
parent 03f18925

package/python-numpy/0002-Don-t-blindly-enable-frexpl-and-ldexpl-for-uClibc.patch

0 → 100644
+33 −0
Original line number Diff line number Diff line 
From b0a1b9628d17251bb417a063ec6c6e09f32393c2 Mon Sep 17 00:00:00 2001

From: "Arnout Vandecappelle (Essensium/Mind)" <arnout@mind.be>

Date: Tue, 6 Oct 2015 01:20:48 +0100

Subject: [PATCH] Don't blindly enable frexpl and ldexpl for uClibc



When the size of double and long double are equal, numpy blindly

assumes that frexpl and ldexpl will be available as well. But for

uClibc, that's not true: it only defines the long double functions

when long double "exists" on the architecture.



So make an exception for uClibc.



Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>

---

 numpy/core/src/private/npy_config.h | 2 +-

 1 file changed, 1 insertion(+), 1 deletion(-)



diff --git a/numpy/core/src/private/npy_config.h b/numpy/core/src/private/npy_config.h

index 453dbd0..7ecf72c 100644

--- a/numpy/core/src/private/npy_config.h

+++ b/numpy/core/src/private/npy_config.h

@@ -11,7 +11,7 @@

 #endif

 

 /* Safe to use ldexp and frexp for long double for MSVC builds */

-#if (NPY_SIZEOF_LONGDOUBLE == NPY_SIZEOF_DOUBLE) || defined(_MSC_VER)

+#if ((NPY_SIZEOF_LONGDOUBLE == NPY_SIZEOF_DOUBLE) && !defined(__UCLIBC__)) || defined(_MSC_VER)

     #ifdef HAVE_LDEXP

         #define HAVE_LDEXPL 1

     #endif

-- 

2.5.3