Add missing include guards.

diff --git a/src/microcode/cmpintmd/x86-fenv.h b/src/microcode/cmpintmd/x86-fenv.h
index c1375d94916bf3369ebf46e1135bc869545ce0ad..81f89e6a8133c89de607a975f72fd6d59d6af539 100644 (file)
--- a/src/microcode/cmpintmd/x86-fenv.h
+++ b/src/microcode/cmpintmd/x86-fenv.h
@@ -26,6 +26,9 @@ USA.
 
 /* C99 <fenv.h> emulation for x86 (shared between i386 and amd64) */
 
+#ifndef SCHEME_CMPINTMD_X86_FENV_H
+#define SCHEME_CMPINTMD_X86_FENV_H
+
 #define HAVE_FENV_T
 #define HAVE_FEXCEPT_T
 
@@ -117,3 +120,5 @@ extern int fegetenv (fenv_t *);
 extern int fesetenv (const fenv_t *);
 extern int feholdexcept (fenv_t *);
 extern int feupdateenv (const fenv_t *);
+
+#endif  /* SCHEME_CMPINTMD_X86_FENV_H */