54 lines
1.8 KiB
Diff
54 lines
1.8 KiB
Diff
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From 84e62d57b90b41a0c96bb9fb6ec61ecaac76a1ab Mon Sep 17 00:00:00 2001
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From: Fabrice Fontaine <fontaine.fabrice@gmail.com>
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Date: Sat, 5 Nov 2022 21:31:36 +0100
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Subject: [PATCH] configure.ac: fix build on powerpc
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Fix the following powerpc build failures on:
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- musl raised because fpu_control.h is not available:
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In file included from fp.c:8:
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fp-gnuppc.c:21:10: fatal error: fpu_control.h: No such file or directory
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21 | #include <fpu_control.h>
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| ^~~~~~~~~~~~~~~
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- glibc raised because _FPU_RC_NEAREST is undefined if _SOFT_FLOAT is
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set:
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In file included from fp.c:8:
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fp-gnuppc.c: In function 'gsl_ieee_set_mode':
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fp-gnuppc.c:53:15: error: '_FPU_RC_NEAREST' undeclared (first use in this function)
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53 | mode |= _FPU_RC_NEAREST ;
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| ^~~~~~~~~~~~~~~
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Fixes:
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- http://autobuild.buildroot.org/results/d73e116c81bf16d2e55fced215d6bd3b382fef10
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- http://autobuild.buildroot.org/results/48403946bb4cda9013e51db59c1b2ffdcf4e2854
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Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
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---
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configure.ac | 8 ++++++++
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1 file changed, 8 insertions(+)
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diff --git a/configure.ac b/configure.ac
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index bfd9ca30..1ee6dca0 100644
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--- a/configure.ac
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+++ b/configure.ac
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@@ -389,6 +389,14 @@ if test "$ac_cv_c_ieee_interface" = "gnux86" ; then
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fi
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fi
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+if test "$ac_cv_c_ieee_interface" = "gnuppc" ; then
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+ AC_CACHE_CHECK([for _FPU_RC_NEAREST], ac_cv_c__fpu_rc_nearest,
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+ [ac_cv_c__fpu_rc_nearest=no
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+ AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <fpu_control.h>
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+]], [[ unsigned short mode = _FPU_RC_NEAREST ; ]])],[ac_cv_c__fpu_rc_nearest="yes"],[ac_cv_c_ieee_interface=unknown])
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+ ])
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+fi
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+
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ac_tr_ieee_interface=HAVE_`echo $ac_cv_c_ieee_interface | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`_IEEE_INTERFACE
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AC_DEFINE_UNQUOTED($ac_tr_ieee_interface,1,[IEEE Interface Type])
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--
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2.35.1
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