libraries/electric-fence: Added (A malloc(3) debugger)
Signed-off-by: Niels Horn <niels.horn@slackbuilds.org>
This commit is contained in:
Sean Donner
Robby Workman
parent
2b7c409af9
commit
7a462a7aaa
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Electric Fence is a debugger that uses virtual memory hardware to detect
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illegal memory accesses. It can detect two common programming bugs:
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software that overruns or underruns the boundaries of a malloc() memory
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allocation, and software that touches a memory allocation that has been
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released by free().
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Unlike other malloc() debuggers, Electric Fence will detect read accesses
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as well as writes, and it will stop and pinpoint the exact instruction
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that causes an error. It is not as thorough as Purify, however.
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In order to debug a program it needs to be linked with Electric Fence's
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library or dynamic linking needs to be used; README.Debian explains that
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in detail.
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In addition to the static library (libefence.a), this package also
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contains a shared library of electric fence (libefence.so). Thus, you
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don't need to recompile your programs any more, all you need to do is:
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LD_PRELOAD=libefence.so ./your-buggy-program
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and libefence's malloc will be used.
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If you're using c++, and you and want to statically link your c++
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programs, you shouldn't use g++ to link libefence.a, but rather:
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gcc -o myprog myprog.o -lstdc++ -lg++ -lefence
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(if you use g++, the order is different, and efence's malloc doesn't
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get used)
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Be sure to read the `libefence` manpage which describes how to set
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various environment variables which alter lebefence's behavior
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#!/bin/sh
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# Slackware build script for Electric Fence
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# Copyright 2009-2010 Sean Donner (sean.donner@gmail.com)
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# All rights reserved.
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#
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# Redistribution and use of this script, with or without modification, is
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# permitted provided that the following conditions are met:
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#
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# 1. Redistributions of this script must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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#
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# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ''AS IS'' AND ANY EXPRESS OR IMPLIED
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# WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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# MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
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# EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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# OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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# OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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# ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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PRGNAM=electric-fence
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VERSION=${VERSION:-2.1.16}
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BUILD=${BUILD:-1}
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TAG=${TAG:-_SBo}
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if [ -z "$ARCH" ]; then
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case "$( uname -m )" in
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i?86) ARCH=i486 ;;
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arm*) ARCH=arm ;;
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*) ARCH=$( uname -m ) ;;
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esac
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fi
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CWD=$(pwd)
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TMP=${TMP:-/tmp/SBo}
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PKG=$TMP/package-$PRGNAM
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OUTPUT=${OUTPUT:-/tmp}
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if [ "$ARCH" = "i486" ]; then
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SLKCFLAGS="-O2 -march=i486 -mtune=i686"
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LIBDIRSUFFIX=""
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elif [ "$ARCH" = "i686" ]; then
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SLKCFLAGS="-O2 -march=i686 -mtune=i686"
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LIBDIRSUFFIX=""
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elif [ "$ARCH" = "x86_64" ]; then
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SLKCFLAGS="-O2 -fPIC"
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LIBDIRSUFFIX="64"
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else
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SLKCFLAGS="-O2"
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LIBDIRSUFFIX=""
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fi
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set -e
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rm -rf $PKG
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mkdir -p $TMP $PKG $OUTPUT
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cd $TMP
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rm -rf $PRGNAM-$VERSION
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tar xfvz $CWD/${PRGNAM}_$VERSION.tar.gz
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cd $PRGNAM-$VERSION
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chown -R root:root .
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find . \
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\( -perm 777 -o -perm 775 -o -perm 711 -o -perm 555 -o -perm 511 \) \
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-exec chmod 755 {} \; -o \
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\( -perm 666 -o -perm 664 -o -perm 600 -o -perm 444 -o -perm 440 -o -perm 400 \) \
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-exec chmod 644 {} \;
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# Compile and install static library
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make CFLAGS="${SLKCFLAGS//-fPIC/}" CXXFLAGS="${SLKCFLAGS//-fPIC/}"
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install -D -m 644 libefence.a $PKG/usr/lib${LIBDIRSUFFIX}/libefence.a
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# Compile and install shared object library
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rm *.o
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make CFLAGS="$SLKCFLAGS -fPIC -fPIC" CXXFLAGS="$SLKCFLAGS -fPIC"
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gcc -shared -Wl,-soname,libefence.so.0 -o libefence.so.0.0 efence.o page.o print.o -lc -lpthread
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install -D -m 755 libefence.so.0.0 $PKG/usr/lib${LIBDIRSUFFIX}/libefence.so.0.0
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# Install manpage
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install -D -m 644 libefence.3 $PKG/usr/man/man3/libefence.3
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# Create library symlinks
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( cd $PKG/usr/lib${LIBDIRSUFFIX}
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ln -s libefence.so.0.0 libefence.so.0
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ln -s libefence.so.0 libefence.so
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)
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# Strip debugging
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find $PKG -exec file {} + | sed -n '/ELF.*executable\|shared object/s/:.*$//p' | \
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xargs strip --strip-unneeded 2> /dev/null || true
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find $PKG -exec file {} + | sed -n '/current ar archive/s/:.*$//p' | \
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xargs strip --strip-debug 2> /dev/null || true
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find $PKG/usr/man -type f -exec gzip -9 {} \;
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for i in $( find $PKG/usr/man -type l ) ; do ln -s $( readlink $i ).gz $i.gz ; rm $i ; done
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mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION
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cp -a COPYING README debian/changelog debian/README.gdb \
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$PKG/usr/doc/$PRGNAM-$VERSION
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cat $CWD/$PRGNAM.SlackBuild > $PKG/usr/doc/$PRGNAM-$VERSION/$PRGNAM.SlackBuild
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mkdir -p $PKG/install
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cat $CWD/slack-desc > $PKG/install/slack-desc
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cd $PKG
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/sbin/makepkg -l y -c n $OUTPUT/$PRGNAM-$VERSION-$ARCH-$BUILD$TAG.${PKGTYPE:-tgz}
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@ -0,0 +1,10 @@
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PRGNAM="electric-fence"
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VERSION="2.1.16"
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HOMEPAGE="http://packages.debian.org/sid/electric-fence"
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DOWNLOAD="http://ftp.debian.org/debian/pool/main/e/electric-fence/electric-fence_2.1.16.tar.gz"
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MD5SUM="9b0055bb54604fb77712d2096442ad53"
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DOWNLOAD_x86_64=""
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MD5SUM_x86_64=""
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MAINTAINER="Sean Donner"
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EMAIL="sean.donner@gmail.com"
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APPROVED="Niels Horn"
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@ -0,0 +1,19 @@
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# HOW TO EDIT THIS FILE:
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# The "handy ruler" below makes it easier to edit a package description. Line
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# up the first '|' above the ':' following the base package name, and the '|' on
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# the right side marks the last column you can put a character in. You must make
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# exactly 11 lines for the formatting to be correct. It's also customary to
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# leave one space after the ':'.
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|-----handy-ruler------------------------------------------------------|
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electric-fence: Electric Fence (A malloc(3) debugger)
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electric-fence:
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electric-fence: Electric Fence is a debugger that uses virtual memory hardware to
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electric-fence: detect illegal memory accesses. It can detect two common programming
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electric-fence: bugs: software that overruns or underruns the boundaries of a malloc()
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electric-fence: memory allocation, and software that touches a memory allocation that
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electric-fence: has been released by free().
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electric-fence:
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electric-fence:
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electric-fence:
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electric-fence:
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