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Subject: [Bug bootstrap/55961] [4.8 Regression] system.h includes gmp.h but system.h is included for build and not just target
Date: Tue, 15 Jan 2013 13:05:00 -0000
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55961

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Priority|P3                          |P1
             Status|NEW                         |ASSIGNED
         AssignedTo|unassigned at gcc dot       |rguenth at gcc dot gnu.org
                   |gnu.org                     |

--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> 2013-01-15 13:05:23 UTC ---
Index: gcc/system.h
===================================================================
--- gcc/system.h        (revision 195194)
+++ gcc/system.h        (working copy)
@@ -636,7 +636,10 @@ extern int vsnprintf(char *, size_t, con
 #include <dlfcn.h>
 #endif

+/* Do not introduce a gmp.h dependency on the build system.  */
+#ifndef GENERATOR_FILE
 #include <gmp.h>
+#endif

 /* Get libiberty declarations.  */
 #include "libiberty.h"

should restore previous behavior.  I'm not sure if any configure check
for the build system includes system.h and does _not_ define GENERATOR_FILE.
So, does the build configury define GENERATOR_FILE?