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