C++ boost build errors

Question

we use boost1.46.1 in our c++ project. When I am building my c++ project using cmake, I am getting following errors.

I am not sure why I am getting this error. Can any one please hemp me to fix the following errors?

/usr/bin/ld: warning: libicuuc.so.44, needed by /efs/dist/fsf/boost/1.46.1-build001/.exec/x86-32.rhel.5/rh346/lib/libboost_regex.so, not found (try using -rpath or -rpath-link)
/usr/bin/ld: warning: libicui18n.so.44, needed by /efs/dist/fsf/boost/1.46.1-build001/.exec/x86-32.rhel.5/rh346/lib/libboost_regex.so, not found (try using -rpath or -rpath-link)
/usr/bin/ld: warning: libicudata.so.44, needed by /efs/dist/fsf/boost/1.46.1-build001/.exec/x86-32.rhel.5/rh346/lib/libboost_regex.so, not found (try using -rpath or -rpath-link)
/efs/dist/fsf/boost/1.46.1-build001/.exec/x86-32.rhel.5/rh346/lib/libboost_regex.so: undefined reference to `u_isspace_44'
/efs/dist/fsf/boost/1.46.1-build001/.exec/x86-32.rhel.5/rh346/lib/libboost_regex.so: undefined reference to `icu_44::Collator::createInstance(icu_44::Locale const&, UErrorCode&)'
/efs/dist/fsf/boost/1.46.1-build001/.exec/x86-32.rhel.5/rh346/lib/libboost_regex.so: undefined reference to `u_charFromName_44'
/efs/dist/fsf/boost/1.46.1-build001/.exec/x86-32.rhel.5/rh346/lib/libboost_regex.so: undefined reference to `u_charType_44'
/efs/dist/fsf/boost/1.46.1-build001/.exec/x86-32.rhel.5/rh346/lib/libboost_regex.so: undefined reference to `u_digit_44'
/efs/dist/fsf/boost/1.46.1-build001/.exec/x86-32.rhel.5/rh346/lib/libboost_regex.so: undefined reference to `u_tolower_44'
/efs/dist/fsf/boost/1.46.1-build001/.exec/x86-32.rhel.5/rh346/lib/libboost_regex.so: undefined reference to `icu_44::Locale::~Locale()'
/efs/dist/fsf/boost/1.46.1-build001/.exec/x86-32.rhel.5/rh346/lib/libboost_regex.so: undefined reference to `u_isblank_44'
/efs/dist/fsf/boost/1.46.1-build001/.exec/x86-32.rhel.5/rh346/lib/libboost_regex.so: undefined reference to `icu_44::Locale::Locale()'
/efs/dist/fsf/boost/1.46.1-build001/.exec/x86-32.rhel.5/rh346/lib/libboost_regex.so: undefined reference to `icu_44::Locale::Locale(icu_44::Locale const&)'
collect2: ld returned 1 exit status

Answer 1

http://www.boost.org/doc/libs/1_47_0/libs/regex/doc/html/boost_regex/install.html

It looks like boost::regex sometimes depends on the ICU library. You can either link against that library, or you can follow the instructions in the link to disable ICU.

Answer 2

您的Boost.Regex具有Unicode支持，您也需要链接到ICU 。