Date: Tue, 28 Aug 2012 17:53:15 +0100 From: Jamie Paul Griffin <jamie@kode5.net> To: David Wolfskill <david@catwhisker.org> Cc: freebsd-stable@freebsd.org Subject: Re: Building the kernel and userland with llvm/clang Message-ID: <20120828165315.GE38854@kontrol.kode5.net> In-Reply-To: <20120828154621.GJ10869@albert.catwhisker.org> References: <20120828153203.GC38854@kontrol.kode5.net> <20120828154621.GJ10869@albert.catwhisker.org>
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[-- Attachment #1 --] [ David Wolfskill wrote on Tue 28.Aug'12 at 8:46:21 -0700 ] > On Tue, Aug 28, 2012 at 04:32:03PM +0100, Jamie Paul Griffin wrote: > > Hi > > > > I've been reading some information about building my system, FreeBSD Stable/9, using llvm/clang; the site I've been looking at is http://wiki.freebsd.org/BuildingFreeBSDWithClang. > > > > I was wondering about the benefits of doing so and also - and probably more importantly - if there are potential problems that might mean it's not worthwhile doing. Having read it again today there doesn't seem to be any likely problems > > > > I'd appreciate any thoughts or advice about this if possible. > > ... > > I have been doing this (on a daily basis) with both head & stable/9 on > my home "build machine" and my laptop since 12 Jul 2012; I have seen no > problems or issues. (I build my ports under stable/8 & have /usr/local > in common across all 4 slices on each machine.) > > Here's what's in my /etc/src.conf for stable/9: > > CC=clang > CXX=clang++ > CPP=clang-cpp > WITH_LIBCPLUSPLUS=yes > > When I update my "production" machines at home from stable/8 to stable/9 > (probably shortly after 9.1 is released), they will (by necessity) also > migrate to FreeBSD built with llvm/clang (as they get installed what the > build machine builds). > > Peace, > david Thanks David, that's helpful information. I'll likely give it a go. So does clang create better binaries and libraries, in terms of performance and such-like? I'm currently reading as much as I can find about clang and its associated tools; however, compilers are quite complex software and learning about them is, for me at least, a lot to take in. Best wishes, Jamie. [-- Attachment #2 --] 0 *H 01 0 + 0 *H 0 0t>=XH#5L٘ '0 *H 01 0 UGB10UGreater Manchester10USalford10U COMODO CA Limited1907U0COMODO Client Authentication and Secure Email CA0 120825000000Z 130825235959Z0 1 0 *H jamie@kode5.net0"0 *H 0 ':ABi.3cJ$Wi /v/.Wu>Ftq<#+\d;1 @H;saçoIȤ|]]GyŨNj8 Hyi6rJgz Vϟ 9ctn*~Ce(4q &X6!s/Rڌ4?uiG Iʏ8 DDkBK_XHHel]}ITr wՐrpR9V_ 00 U #0zN t[xcd'/[y{0 U \Ty!Q^hP9q0U 0 U 0 0 U %0+ +10 `HB 0FU ?0=0; +10+0)+ https://secure.comodo.net/CPS0WU P0N0LJHFhttp://crl.comodoca.com/COMODOClientAuthenticationandSecureEmailCA.crl0+|0z0R+0Fhttp://crt.comodoca.com/COMODOClientAuthenticationandSecureEmailCA.crt0$+0http://ocsp.comodoca.com0U 0jamie@kode5.net0 *H e;MK #e ;6>Ԛ%w״{㴳=#] ѕs#ڭrO ST\>e 3GsPu`f=Rtf_GdU^> 4lQ+NyGۮWCV~bb IW7U%hFRX JhEz* W!)tFŖ9n gD)}#\I FE4ۙϭ@PI 8^00mOj3""2zq0 *H 01 0 UUS1 0 UUT10USalt Lake City1 0 U The USERTRUST Network1!0 U http://www.usertrust.com1604U-UTN-USERFirst-Client Authentication and Email0 110428000000Z 200530104838Z01 0 UGB10UGreater Manchester10USalford10U COMODO CA Limited1907U0COMODO Client Authentication and Secure Email CA0"0 *H 0 [KW^/@ȣSX_fe2N2}UxLUB'qi2@'Vbqi c^`ʢAj HmeC*.+c8w߱ڂ2jgo \5Tq 7 PSl Y1 LR@[HhJ$ :q_㬿;%qh=XF<hmz!W42~JRrd&N`ohQcB}"cөΞD\[5 K0G0 U #0g}ĝ&p KPH|=n}0 U zN t[xcd'/[y{0U 0U 0 0U 00U 0XU Q0O0MKIGhttp://crl.usertrust.com/UTN-USERFirst-ClientAuthenticationandEmail.crl0t+h0f0=+01http://crt.usertrust.com/UTNAddTrustClient_CA.crt0%+0http://ocsp.usertrust.com0 *H ־xWUm3DRB JAIZҭsn>&|L0(B<%> u=9fѡMo(l tZڱuz/y VtCr`9 G:eH<=%`I?C 3_н`j;:< I3B)93i.EMiڀ =]|Gm]W0KID~y83:]&XaU!ՙC@B0Ұun004=+'44pT0 *H 0o1 0 USE10U AddTrust AB1&0$U AddTrust External TTP Network1"0 UAddTrust External CA Root0 050607080910Z 200530104838Z01 0 UUS1 0 UUT10USalt Lake City1 0 U The USERTRUST Network1!0 U http://www.usertrust.com1604U-UTN-USERFirst-Client Authentication and Email0"0 *H 0 9}A;bF7`u9eJGHjM5BI/ |1Nd.)բdąQ5yNh{ zɤ2 O0 nFxoY^/m/묡j.g5y iF͠ v:z'[=s "HaLi.1 ,CZ qYں gT: we tbh ~GeMW(t40b0, 00 U #0z4&&T$T0 U g}ĝ&p KPH|=n}0U 0U 00U 00U 0DU =0;09753http://crl.usertrust.com/AddTrustExternalCARoot.crl05+)0'0%+0http://ocsp.usertrust.com0 *H c(1{b#1sSQ L֟/g~x3t&dp bP#4Vp4nx7 _j̉_|>Q5|`k:+߳}[| P-sxt1^˚ƹ7urDg% R%G<N 6wH\-?`q`q 6 lKuI;ٟMx&-n_ 10001 0 UGB10UGreater Manchester10USalford10U COMODO CA Limited1907U0COMODO Client Authentication and Secure Email CAt>=XH#5L٘ '0 + 0 *H 1 *H 0 *H 1 120828165315Z0# *H 1 J:dlSxsTe`0R *H 1E0C0 *H 0*H 0 *H @0+0 *H (0 *H N 1rGMW+^}t `V#tҖ}tiǗ,:lRyKQ _[ǝ\ Mod |O?Hr|G\*{=ܐKGq;?YO[aP ;\8,uE<^<s-pXlZm =gT T۶_j_IbK"#%><<ΨBʍ4ni,G<=7]gR%:MJ
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