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-rw-r--r--gcc/c-cppbuiltin.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/gcc/c-cppbuiltin.c b/gcc/c-cppbuiltin.c
index c36b038bc77..cc19ce5dd7d 100644
--- a/gcc/c-cppbuiltin.c
+++ b/gcc/c-cppbuiltin.c
@@ -569,6 +569,9 @@ c_cpp_builtins (cpp_reader *pfile)
if (flag_openmp)
cpp_define (pfile, "_OPENMP=200505");
+ if (lang_fortran)
+ cpp_define (pfile, "__GFORTRAN__=1");
+
builtin_define_type_sizeof ("__SIZEOF_INT__", integer_type_node);
builtin_define_type_sizeof ("__SIZEOF_LONG__", long_integer_type_node);
builtin_define_type_sizeof ("__SIZEOF_LONG_LONG__",