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I installed Poco library on my Arch64 system using AUR. Sources were downloaded, compiled and the package succesfully installed. But now I need to patch the PKGBUILD so that I can compile 32-bit version of the library and install it next to the 64-bit version.

This is the original PKGBUILD:

# Maintainer: Robert Knauer 
# Contributor: Rodrigo Grumiche Silva 
# Contributor: nozog
# Contributor: davidhjelm
# Contributor: Ray Kohler 
# Contributor: Nathan Owe 

pkgdesc="C++ class libraries for network-centric, portable applications, complete edition"
arch=('i686' 'x86_64')
depends=('unixodbc' 'libmysqlclient' 'openssl')
makedepends=('gcc' 'make' 'unixodbc' 'libmysqlclient' 'openssl' 'chrpath')

  cd "${srcdir}/${pkgname}-${pkgver}-all"
  ./configure --prefix=/usr --no-samples --no-tests
  make ODBCLIBDIR="/usr/lib"

  cd "${srcdir}/${pkgname}-${pkgver}-all"
  make ODBCLIBDIR="/usr/lib" DESTDIR="${pkgdir}" install
  install -Dm644 'LICENSE' "${pkgdir}/usr/share/licenses/${pkgname}/LICENSE"
  # remove rpath information from binaries
  chrpath -d "${pkgdir}/usr/bin/cpspc"
  chrpath -d "${pkgdir}/usr/bin/cpspcd"
  chrpath -d "${pkgdir}/usr/bin/f2cpspd"
  chrpath -d "${pkgdir}/usr/bin/f2cpsp"
  # remove debugging libraries
  rm "${pkgdir}/usr/lib/libPoco"*"d.so"*

The first thing I tried was to take a look at another lib32-* AUR package, but I failed even to add the -m32 flag.

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1 Answer

You need to,

  1. Change package name to lib32-XX

  2. place a export CFLAGS="-m32" prior to make or ./configure (In this case would be the build() function

  3. And you need to alter the installation path, to /usr/lib32, in this case it "could" be all occurrence of ODBCLIBDIR="/usr/lib", worth a try

And examine the contents of pkg before install anything, see if it's right.

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From some reason CFLAGS (and CXXFLAGS, CPPFLAGS, LDFLAGS) are ignored. I found a --cflags switch in configure script, but this adds -m32 only in compilation phase, not in the linker. -Wl,-m32 does not help. –  Dadam Feb 20 '13 at 11:30
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