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gitian: don't export any symbols from executable

This avoids conflicts between the libraries statically linked into bitcoin and any
libraries we may link dynamically (such as Qt and OpenSSL, see issue #4094).
It also avoids start-up overhead to not export any unnecessary symbols.
To do this, build a linker script that marks all symbols as local.
pull/1/head
Wladimir J. van der Laan 9 years ago
parent
commit
92e3022f88
  1. 12
      contrib/gitian-descriptors/gitian-linux.yml

12
contrib/gitian-descriptors/gitian-linux.yml

@ -48,8 +48,18 @@ script: | @@ -48,8 +48,18 @@ script: |
tar -zxf ../build/qt-linux${GBUILD_BITS}-4.6.4-gitian-r1.tar.gz
cd ../build
# Avoid exporting *any* symbols from the executable
# This avoids conflicts between the libraries statically linked into bitcoin and any
# libraries we may link dynamically (such as Qt and OpenSSL, see issue #4094).
# It also avoids start-up overhead to not export any unnecessary symbols.
# To do this, build a linker script that marks all symbols as local.
LINKER_SCRIPT=$HOME/build/linker_version_script
echo '
{
local: *;
};' > $LINKER_SCRIPT
function do_configure {
./configure "$@" --enable-upnp-default --prefix=$STAGING --with-protoc-bindir=$STAGING/host/bin --with-boost=$STAGING --disable-maintainer-mode --disable-dependency-tracking PKG_CONFIG_PATH="$STAGING/lib/pkgconfig" CPPFLAGS="-I$STAGING/include ${OPTFLAGS}" LDFLAGS="-L$STAGING/lib ${OPTFLAGS}" CXXFLAGS="-frandom-seed=bitcoin ${OPTFLAGS}" BOOST_CHRONO_EXTRALIBS="-lrt" --enable-glibc-back-compat
./configure "$@" --enable-upnp-default --prefix=$STAGING --with-protoc-bindir=$STAGING/host/bin --with-boost=$STAGING --disable-maintainer-mode --disable-dependency-tracking PKG_CONFIG_PATH="$STAGING/lib/pkgconfig" CPPFLAGS="-I$STAGING/include ${OPTFLAGS}" LDFLAGS="-L$STAGING/lib -Wl,--version-script=$LINKER_SCRIPT ${OPTFLAGS}" CXXFLAGS="-frandom-seed=bitcoin ${OPTFLAGS}" BOOST_CHRONO_EXTRALIBS="-lrt" --enable-glibc-back-compat
}
#
cd bitcoin

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