Jason's Home Page - Linux HOWTOs

pcre - Library for Perl Compatible Regular Expressions ChangeLog

Web site:	https://www.pcre.org/
Repository:	https://vcs.pcre.org/pcre/

HOWTO

# PCRE 8.45
# =========
# 8.45 is the final release of PCRE (but PCRE2 continues)
#
# PCRE2 is covered in a separate HOWTO

# Slackware 13.37, 14.0: pcre 8.12
# Slackware 14.1: pcre 8.33
# Slackware 14.2: pcre 8.39
# Slackware 15.0: pcre 8.45
# Check 'patches' for updates

# Prerequisites:
# pkg-config
# zlib (--enable-pcregrep-libz)
# bzip2 (--enable-pcregrep-libbz2)
# readline (--enable-pcretest-libreadline) or libedit (--enable-pcretest-libedit)

# wget, Cyrus IMAP, Apache httpd, KDE, PHP, and other significant things use
# this library, so I would suggest shutting them down before upgrading this
# library or at least knowing what is running that uses it before beginning.
# Try running 'lsof /usr/lib*/libpcre*'
# (if you have lsof installed) to see if anything else is running that
# uses the PCRE shared library.

# If you have any trouble downloading it from the URL below, try these:
# https://sourceforge.net/projects/pcre/files/

# Get the source
cd
test -f installed/pcre-8.45.tar.bz2 && mv installed/pcre-8.45.tar.bz2 .
test ! -f pcre-8.45.tar.bz2 &&
wget https://downloads.sf.net/pcre/pcre-8.45.tar.bz2

# Verify tarball w/ sha256sum:
# (this came from my gpg-verified tarball)
echo "4dae6fdcd2bb0bb6c37b5f97c33c2be954da743985369cddac3546e3218bff\
b8  pcre-8.45.tar.bz2" | sha256sum -c

# Verify tarball w/ gpg:
( gpg --list-keys FB0F43D8 > /dev/null 2>&1 || gpg --recv-keys FB0F43D8 ) &&
wget -nc https://downloads.sf.net/pcre/pcre-8.45.tar.bz2.sig &&
  gpg --verify pcre-8.45.tar.bz2.sig && rm pcre-8.45.tar.bz2.sig

# Extract the source
mkdir -p -m 0700 ~/src
cd ~/src
find -maxdepth 1 -type d -name "pcre-*" -exec rm -r {} \;
tar xjvf ~/pcre-8.45.tar.bz2
cd pcre-8.45
test $UID = 0 && chown -R root:root .

# Something to consider...
#
# Slackware's pcre package puts the shared library files in /lib64 (or /lib)
# because they are important, used by setup scripts, /usr may not be mounted
# yet early on in the boot process, etc.
#
# After 'make install', rather than just removing the old files in /lib64,
# you may want to move the new, real .so.1.2.13 files to /lib64, then create
# symlinks pointing to them in /usr/lib64
# Just keep in mind, many things use libpcre, be careful
#
# Don't just use --libdir=/lib64 because that will also effect where the
# pkgconfig/libpcre*.pc files end up

# In the past, I've seen configure test for -lreadline and fail with this:
# libreadline.so: undefined reference to `tgetflag'
# and then I would do someting like run it again with LIBS=ltermcap
# The configure tests have been updated to try a different way if it fails

# Configure the build - 64-bit
test $(uname -m) = 'x86_64' &&
./configure --prefix=/usr --libdir=/usr/lib64 --mandir=/usr/man \
--enable-jit --enable-unicode-properties --enable-utf \
--enable-pcregrep-libz --enable-pcregrep-libbz2 \
--enable-pcretest-libreadline \
--enable-pcre16 --enable-pcre32

# Configure the build - anything else
test $(uname -m) != 'x86_64' &&
./configure --prefix=/usr --mandir=/usr/man \
--enable-jit --enable-unicode-properties --enable-utf \
--enable-pcregrep-libz --enable-pcregrep-libbz2 \
--enable-pcretest-libreadline \
--enable-pcre16 --enable-pcre32

# Build it
make

# Become root to clean up old files and to install it
su

# Because grep may be linked with the existing libpcre, and configure and
# 'make install' use grep, we can't run removepkg at this point - if your
# grep is linked with a shared libpcre (ldd /usr/bin/grep).  If you're
# replacing a Slackware PCRE package, manually remove files from it except
# for /usr/lib*/libpcre* files.  Look in ./zapme.txt after this, if the list
# looks good, run:  cat zapme.txt | xargs rm -f
rm -f ./zapme.txt
egrep "^usr\/" /var/adm/packages/pcre-* |
egrep -v "\/$" | egrep -v "^usr\/(lib|lib64)\/" |
while read zapme; do echo "/${zapme}" >> ./zapme.txt; done

# Install it
make install
ldconfig

# Make sure your non-root user can remove the source later
chown -R $(logname) .
chmod -R u+w .

# The Slackware package libpcre*.so* files will be in /lib64, not /usr/lib64
# If you are upgrading from a package and use the default of /usr/lib*/, you
# may find things are still using those and not the ones you just installed
# in to /usr/lib64

# If you did want to move them and create symlinks, assuming you are 64-bit,
# this is one way to do that:
( cd /usr/lib64
  find . -type f -name "libpcre*.so*" -exec mv {} /lib64/ \;
  find . -type l -name "libpcre*.so*" -exec rm {} \;
  find /lib64 -type f -name "libpcre*.so*" -exec ln -s {} \;
  ln -s /lib64/libpcre.so.1.2.13 libpcre.so.1
  ln -s /lib64/libpcre.so.1.2.13 libpcre.so
  ln -s /lib64/libpcre16.so.0.2.13 libpcre16.so.0
  ln -s /lib64/libpcre16.so.0.2.13 libpcre16.so
  ln -s /lib64/libpcre32.so.0.0.13 libpcre32.so.0
  ln -s /lib64/libpcre32.so.0.0.13 libpcre32.so
  ln -s /lib64/libpcrecpp.so.0.0.2 libpcrecpp.so.0
  ln -s /lib64/libpcrecpp.so.0.0.2 libpcrecpp.so
  ln -s /lib64/libpcreposix.so.0.0.7 libpcreposix.so.0
  ln -s /lib64/libpcreposix.so.0.0.7 libpcreposix.so )
( cd /lib64
  ln -sf libpcre.so.1.2.13 libpcre.so.1
  ln -sf libpcre.so.1.2.13 libpcre.so
  ln -sf libpcre16.so.0.2.13 libpcre16.so.0
  ln -sf libpcre16.so.0.2.13 libpcre16.so
  ln -sf libpcre32.so.0.0.13 libpcre32.so.0
  ln -sf libpcre32.so.0.0.13 libpcre32.so
  ln -sf libpcrecpp.so.0.0.2 libpcrecpp.so.0
  ln -sf libpcrecpp.so.0.0.2 libpcrecpp.so
  ln -sf libpcreposix.so.0.0.7 libpcreposix.so.0
  ln -sf libpcreposix.so.0.0.7 libpcreposix.so )
ldconfig

# If you have grep, PHP or KDE installed, or anything else that you know uses
# libpcre as a shared library, verify that it is linked to the new version
# OK.
test -x /bin/grep && ldd /bin/grep | grep pcre
test -x /usr/bin/grep && ldd /usr/bin/grep | grep pcre
test -x /usr/bin/kaddressbook && ldd /usr/bin/kaddressbook | grep pcre
test -x /usr/bin/php && ldd /usr/bin/php | grep pcre
test -x /usr/local/bin/php && ldd /usr/local/bin/php | grep pcre

# Now if you want, remove old real-file not-symlink versions of libpcre.so.*,
# libpcrecpp.so.*, and libpcreposix.so.* in /lib*/, if there are any.  This
# is purely to avoid clutter, so if you feel like leaving them there, that's
# fine, and probably safer.  Normally you'd be weary of programs that are linked
# to libpcre.so.1 when you upgrade to libpcre.so.2 (remove .1 and break that
# program), but every version that I've installed so far has named the shared
# library files something like libpcre*.so.0.0.x

# If you remove the old Slackware libpcre files, move the package files for
# Slackware's PCRE out of the way (as if you had removed pcre with
# removepkg):
find /var/adm/packages -type f -name "pcre-*" \
-exec mv {} /var/adm/removed_packages/ \;
find /var/adm/scripts -type f -name "pcre-*" \
-exec mv {} /var/adm/removed_scripts/ \;

# Become yourself again
exit

# Save the source for later
cd
mkdir -p -m 0700 installed
rm -f installed/pcre-*.tar.*
mv pcre-8.45.tar.bz2 installed/