1 files changed, 47 insertions, 0 deletions
diff --git a/src/boost/libs/multiprecision/config/has_mpfr.cpp b/src/boost/libs/multiprecision/config/has_mpfr.cpp
new file mode 100644
index 000000000..c82f28d7d
--- /dev/null
+++ b/src/boost/libs/multiprecision/config/has_mpfr.cpp
@@ -0,0 +1,47 @@
+//  Copyright John Maddock 2012.
+//  Use, modification and distribution are subject to the
+//  Boost Software License, Version 1.0. (See accompanying file
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+#include <cstddef> // See https://gcc.gnu.org/gcc-4.9/porting_to.html
+#include <mpfr.h>
+#include <boost/config.hpp>
+
+#ifdef __GNUC__
+#pragma message "MPFR_VERSION_STRING=" MPFR_VERSION_STRING
+#endif
+
+#if (__GNU_MP_VERSION < 4) || ((__GNU_MP_VERSION == 4) && (__GNU_MP_VERSION_MINOR < 2))
+#error "Incompatible GMP version"
+#endif
+
+#if (MPFR_VERSION < 3)
+#error "Incompatible MPFR version"
+#endif
+
+#ifdef __GNUC__
+#pragma message "__GNU_MP_VERSION=" BOOST_STRINGIZE(__GNU_MP_VERSION)
+#pragma message "__GNU_MP_VERSION_MINOR=" BOOST_STRINGIZE(__GNU_MP_VERSION_MINOR)
+#endif
+
+#if (__GNU_MP_VERSION < 4) || ((__GNU_MP_VERSION == 4) && (__GNU_MP_VERSION_MINOR < 2))
+#error "Incompatible GMP version"
+#endif
+
+int main()
+{
+   void* (*alloc_func_ptr)(size_t);
+   void* (*realloc_func_ptr)(void*, size_t, size_t);
+   void (*free_func_ptr)(void*, size_t);
+
+   mp_get_memory_functions(&alloc_func_ptr, &realloc_func_ptr, &free_func_ptr);
+
+   mpfr_buildopt_tls_p();
+
+   mpfr_t t;
+   mpfr_init2(t, 128);
+   if (t[0]._mpfr_d)
+      mpfr_clear(t);
+
+   return 0;
+}