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-rw-r--r--config/cmake/ConfigureChecks.cmake11
1 files changed, 11 insertions, 0 deletions
diff --git a/config/cmake/ConfigureChecks.cmake b/config/cmake/ConfigureChecks.cmake
index 09f1caf..b9f18a9 100644
--- a/config/cmake/ConfigureChecks.cmake
+++ b/config/cmake/ConfigureChecks.cmake
@@ -158,6 +158,17 @@ if (NOT WINDOWS)
endif (HDF5_ENABLE_DIRECT_VFD)
endif (NOT WINDOWS)
+#-----------------------------------------------------------------------------
+# Check if C has __float128 extension
+#-----------------------------------------------------------------------------
+
+CHECK_TYPE_SIZE("__float128" SIZEOF___FLOAT128)
+if(${HAVE_SIZEOF___FLOAT128})
+ SET(H5_HAVE_FLOAT128 1)
+else (${HAVE_SIZEOF___FLOAT128})
+ SET(H5_HAVE_FLOAT128 0)
+ SET(SIZEOF___FLOAT128 0)
+endif(${HAVE_SIZEOF___FLOAT128})
#-----------------------------------------------------------------------------
# Macro to determine the various conversion capabilities