Re: buildworld of HEAD failing under 8.1-RELEASE

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On May 2, 2013, at 20:28, Ryan Stone <rysto32@gmail.com> wrote:
> I am getting the following error when trying to build HEAD on an
> 8.1-RELEASE build machine (i386 jail on an amd64 host):
>=20
> =3D=3D=3D> lib/clang/libllvmanalysis (all)
> =
/usr/d2/users/rstone/git/svos/lib/clang/libllvmanalysis/../../../contrib/l=
lvm/lib/Analysis/ConstantFolding.cpp:
> In function 'llvm::Constant* llvm::ConstantFoldCall(llvm::Function*,
> llvm::ArrayRef<llvm::Constant*>, const llvm::TargetLibraryInfo*)':
> =
/usr/d2/users/rstone/git/svos/lib/clang/libllvmanalysis/../../../contrib/l=
lvm/lib/Analysis/ConstantFolding.cpp:1310:
> error: 'log2' was not declared in this scope
....
> Is there anything that I can do other than build on another machine?  =
I
> don't control the build machines at $WORK so I'm not sure whether I =
can get
> them upgraded. :(

In 8.1-RELEASE, there was no log2() MFC yet.  Can you please try the =
attached diff?

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Index: lib/clang/include/llvm/Config/config.h
===================================================================

--- lib/clang/include/llvm/Config/config.h	(revision 250174)
+++ lib/clang/include/llvm/Config/config.h	(working copy)
@@ -5,6 +5,9 @@
 #ifndef CONFIG_H
 #define CONFIG_H
 
+/* Get __FreeBSD_version */
+#include <osreldate.h>
+
 /* Bug report URL. */
 #define BUG_REPORT_URL "http://llvm.org/bugs/"
 
@@ -248,7 +251,9 @@
 #define HAVE_LOG10 1
 
 /* Define to 1 if you have the `log2' function. */
+#if __FreeBSD_version >= 900027 || (__FreeBSD_version < 900000 && __FreeBSD_version >= 802502)
 #define HAVE_LOG2 1
+#endif
 
 /* Define to 1 if you have the `longjmp' function. */
 #define HAVE_LONGJMP 1

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