From owner-freebsd-hackers@FreeBSD.ORG Thu Jun 27 00:02:07 2013 Return-Path: Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115]) by hub.freebsd.org (Postfix) with ESMTP id 0DE0F6C5 for ; Thu, 27 Jun 2013 00:02:07 +0000 (UTC) (envelope-from toasty@dragondata.com) Received: from mail-yh0-x235.google.com (mail-yh0-x235.google.com [IPv6:2607:f8b0:4002:c01::235]) by mx1.freebsd.org (Postfix) with ESMTP id C41AA17C3 for ; Thu, 27 Jun 2013 00:02:06 +0000 (UTC) Received: by mail-yh0-f53.google.com with SMTP id a41so79499yho.40 for ; Wed, 26 Jun 2013 17:02:05 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=dragondata.com; s=google; h=from:content-type:subject:message-id:date:to:mime-version:x-mailer; bh=9lRvwp1m8oIs/YsYfW+HkTQB7ayvQtM2w21998gVkVQ=; b=IeT2P706+uRD9xB6hLFHDO0zp6UG/+r7yju4fMX0hI7i/L56ZeBTExdqINSJnWDSbD e1XAVhdXxa/pqunwfAbSmwBfaGwAL1qj8s1MmBDwds6l10g2Agr0ZbLnB+TTB+JrFbNj /eWuo9lEtSgNMcwgLMLdTPhRYtw8Xf2bAetG8= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20120113; h=from:content-type:subject:message-id:date:to:mime-version:x-mailer :x-gm-message-state; bh=9lRvwp1m8oIs/YsYfW+HkTQB7ayvQtM2w21998gVkVQ=; b=aR8rplCV6XW8Hz84MCy+l0uI/h+Vxs5gzdHoxbFDhcoO9E4G7+wEmKDy671HPbDMGL 4f8N9INrTrfkb1Z6SEx/yfsod2cKV7TEdKvMAuluuryVwg8uP4TofETYFXsm7K1xLoCa yMALEiT7swassYzq7alnReUsBYvBeKsUVkv666+4J285WrTlzLfO4q9oslexaC7bwc3P xy8xubeFbFdnvsFk2Wcs4BJy3O2IOZDS6APzHatB4dB4IqqJoolbJe3iG/dlQC2PWX8A w7gcHZOo6cBzQGeRXROyx2b6PFk8/8M1QIMMk8WjBiItVP6n4UMdJNpfUQ7p//4fE+uy 1eYQ== X-Received: by 10.236.25.36 with SMTP id y24mr3285043yhy.129.1372291325758; Wed, 26 Jun 2013 17:02:05 -0700 (PDT) Received: from unassigned.v6.your.org ([2001:4978:1:45:3cc2:51b:e158:a115]) by mx.google.com with ESMTPSA id j5sm438369yhk.20.2013.06.26.17.02.04 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Wed, 26 Jun 2013 17:02:05 -0700 (PDT) From: Kevin Day Content-Type: multipart/signed; boundary="Apple-Mail=_17EED475-0486-4923-862D-97DDBBA66FA1"; protocol="application/pkcs7-signature"; micalg=sha1 Subject: Can't use gcc in a clang built world Message-Id: Date: Wed, 26 Jun 2013 19:02:02 -0500 To: "freebsd-hackers@freebsd.org Hackers" Mime-Version: 1.0 (Mac OS X Mail 6.5 \(1508\)) X-Mailer: Apple Mail (2.1508) X-Gm-Message-State: ALoCoQnR0L5JH6jHf9bygHlrQ7gzXyVKPSL9yDe1h1Mn+9M0++1Km9ZETbPRaAPMe/nc0eX2SRCb X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 27 Jun 2013 00:02:07 -0000 --Apple-Mail=_17EED475-0486-4923-862D-97DDBBA66FA1 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=us-ascii Are you supposed to be able to use gcc to build userland binaries if you = built world with clang? I'm on -CURRENT as of a few days ago (using armv6 but i'm not sure if = that matters). If I buildworld with clang, then attempt to compile some = userland binaries with gcc, I'll get missing symbols like: CCLD pcretest ./.libs/libpcre.so: undefined reference to `__clear_cache' *** [pcretest] Error code 1 If I look at /lib/libgcc that symbol isn't there: # readelf -a /lib/libgcc_s.so.1 | grep clear # If I rebuild /usr/src/gnu/libgcc with gcc, then try again it works. The = symbol is now there: # readelf -a /lib/libgcc_s.so.1 | grep clear 94: 00003b94 48 FUNC GLOBAL DEFAULT 12 = __clear_cache@@GCC_3.0 # I can build pcre correctly. I thought one of the goals was to be able to = use both interchangeably on the same system. Is this broken, or one of = the casualties of making clang default now? Do we need two different = versions of some libraries depending on which compiler is being used? -- Kevin --Apple-Mail=_17EED475-0486-4923-862D-97DDBBA66FA1 Content-Disposition: attachment; filename=smime.p7s Content-Type: application/pkcs7-signature; name=smime.p7s Content-Transfer-Encoding: base64 MIAGCSqGSIb3DQEHAqCAMIACAQExCzAJBgUrDgMCGgUAMIAGCSqGSIb3DQEHAQAAoIIPLzCCBN0w ggPFoAMCAQICEHGS++YZX6xNEoV0cTSiGKcwDQYJKoZIhvcNAQEFBQAwezELMAkGA1UEBhMCR0Ix GzAZBgNVBAgMEkdyZWF0ZXIgTWFuY2hlc3RlcjEQMA4GA1UEBwwHU2FsZm9yZDEaMBgGA1UECgwR Q29tb2RvIENBIExpbWl0ZWQxITAfBgNVBAMMGEFBQSBDZXJ0aWZpY2F0ZSBTZXJ2aWNlczAeFw0w NDAxMDEwMDAwMDBaFw0yODEyMzEyMzU5NTlaMIGuMQswCQYDVQQGEwJVUzELMAkGA1UECBMCVVQx FzAVBgNVBAcTDlNhbHQgTGFrZSBDaXR5MR4wHAYDVQQKExVUaGUgVVNFUlRSVVNUIE5ldHdvcmsx ITAfBgNVBAsTGGh0dHA6Ly93d3cudXNlcnRydXN0LmNvbTE2MDQGA1UEAxMtVVROLVVTRVJGaXJz dC1DbGllbnQgQXV0aGVudGljYXRpb24gYW5kIEVtYWlsMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8A MIIBCgKCAQEAsjmFpPJ9q0E7YkY3rs3BYHW8OWX5ShpHornMSMxqmNVNNRm5pELlzkniii8efNIx 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