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-rw-r--r--Build/source/libs/luajit/configure.ac8
1 files changed, 8 insertions, 0 deletions
diff --git a/Build/source/libs/luajit/configure.ac b/Build/source/libs/luajit/configure.ac
index a09398e3501..66cccbad459 100644
--- a/Build/source/libs/luajit/configure.ac
+++ b/Build/source/libs/luajit/configure.ac
@@ -77,6 +77,14 @@ AS_IF([test "x$lj_cpp" != xok],
echo timestamp >config.force
fi
+# Check log2, on some systems is still not defined
+LUAJIT_HAS_NOT_LOG2=
+AC_CHECK_DECLS([log2], [], [LUAJIT_HAS_NOT_LOG2=[-DLUAJIT_NO_LOG2]], [[#include <math.h>]])
+AC_SUBST([LUAJIT_HAS_NOT_LOG2])
+
+
+
+
AC_SUBST([LUAJIT_TREE], [LuaJIT-src])
dnl Not used but avoids putting a zillion useless -D's on the command line.