Date: Wed, 10 Dec 2003 01:13:29 -0500 From: Damian Gerow <dgerow@afflictions.org> To: current@freebsd.org Subject: buildworld doesn't like -O2 Message-ID: <20031210061329.GD13539@afflictions.org> In-Reply-To: <mailman.1071028801.33452.fcurrent-l@lists.sentex.ca> References: <20031210023632.GA13539@afflictions.org> <mailman.1071024061.20138.fcurrent-l@lists.sentex.ca> <20031210024302.GB13539@afflictions.org> <mailman.1071028801.33452.fcurrent-l@lists.sentex.ca>
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Thus spake Steve Kargl (sgk@troutmask.apl.washington.edu) [09/12/03 22:59]:
: -j# obfuscates where the actual error occurs unless you have
: enough make-fu to read the log. The first step one should
: take when this type of error happens is a plain "make buildworld".
: The next step is run cvsup again to see if the problem has
: been fixed. Then, report the error to freebsd-current.
Okay, after some playing around, it turns out that something in the PAM code
really doesn't like -O2 optimization -- I have CFLAGS=-O2 -pipe, and this is
what I see:
===> lib/libpam/modules/pam_echo
cc -O2 -pipe -march=pentiumpro \
-I/usr/src/lib/libpam/modules/pam_echo/../../../../contrib/openpam/include \
-I/usr/src/lib/libpam/modules/pam_echo/../../libpam -Wsystem-headers \
-Werror -Wall -Wno-format-y2k -W -Wstrict-prototypes \
-Wmissing-prototypes -Wpointer-arith -Wreturn-type -Wcast-qual \
-Wwrite-strings -Wswitch -Wshadow -Wcast-align -Wno-uninitialized -c \
/usr/src/lib/libpam/modules/pam_echo/pam_echo.c \
/usr/src/lib/libpam/modules/pam_echo/pam_echo.c: In function `_pam_echo':
/usr/src/lib/libpam/modules/pam_echo/pam_echo.c:92: warning:
dereferencing type-punned pointer will break strict-aliasing rules
*** Error code 1
Stop in /usr/src/lib/libpam/modules/pam_echo.
*** Error code 1
Stop in /usr/src/lib/libpam/modules.
*** Error code 1
Stop in /usr/src/lib/libpam.
*** Error code 1
Stop in /usr/src.
*** Error code 1
Stop in /usr/src.
*** Error code 1
Stop in /usr/src.
*** Error code 1
Stop in /usr/src.
Yes, I'm aware the -O2 isn't supported. World builds fine with just -O.
I'll just drop back to that.
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