diff options
Diffstat (limited to 'configure.ac')
| -rw-r--r-- | configure.ac | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/configure.ac b/configure.ac index 21ad68b..f8e538a 100644 --- a/configure.ac +++ b/configure.ac @@ -2960,6 +2960,30 @@ else fi ## ---------------------------------------------------------------------- +## Set the flag to indicate that the machine is power9 and cannot +## accurately convert some long double values. +## +AC_MSG_CHECKING([if the system is power9 and cannot correctly convert some long double values]) + +TEST_SRC="`(echo \"#define H5_DISABLE_SOME_LDOUBLE_CONV_TEST 1\"; cat $srcdir/config/cmake/ConversionTests.c)`" + +if test ${ac_cv_sizeof_long_double} = 0; then + hdf5_cv_disable_some_ldouble_conv=${hdf5_cv_disable_some_ldouble_conv=no} +else + AC_CACHE_VAL([hdf5_cv_disable_some_ldouble_conv], + [AC_RUN_IFELSE([AC_LANG_SOURCE([$TEST_SRC])], + [hdf5_cv_disable_some_ldouble_conv=yes], [hdf5_cv_disable_some_ldouble_conv=no],[])]) +fi + +if test ${hdf5_cv_disable_some_ldouble_conv} = "yes"; then + AC_DEFINE([DISABLE_SOME_LDOUBLE_CONV], [1], + [Define if your system is power9 and cannot convert some long double values correctly.]) + AC_MSG_RESULT([yes]) +else + AC_MSG_RESULT([no]) +fi + +## ---------------------------------------------------------------------- ## Set some variables for general configuration information to be saved ## and installed with the libraries (used to generate libhdf5.settings). ## |