Some of the blevex packages require C/C++ libraries.
In general, bleve expects these libraries to be built and installed in the standard system locations. If not, it is up to you to set the appropriate CGO_… environment variables so that the libraries and headers can be found.
The following sections are user-contributed instructions for satisfying dependencies on particular platforms.
$ sudo apt-get install libleveldb-dev libstemmer-dev libicu-dev svn build-essential
$ go get -u -v github.com/blevesearch/bleve
$ cd $GOPATH/src/github.com/blevesearch/bleve/analysis/token_filters/cld2
$ svn co http://cld2.googlecode.com/svn/trunk cld2-read-only
$ cd cld2-read-only/internal/
$ ./compile_libs.sh
$ sudo cp *.so /usr/local/lib
$ go get -u -v -tags full github.com/blevesearch/bleve
$ brew install leveldb icu4c svn # etc?
$ export CGO_LDFLAGS=-L/usr/local/opt/icu4c/lib
$ export CGO_CFLAGS=-I/usr/local/opt/icu4c/include
$ go get -u -v github.com/blevesearch/bleve
$ cd $GOPATH/src/github.com/blevesearch/bleve/analysis/token_filters/cld2
$ svn co http://cld2.googlecode.com/svn/trunk cld2-read-only
$ cd cld2-read-only/internal/
# if you feel gutsy run:
$ perl -p -i -e 's/soname=/install_name,/' compile_libs.sh
# otherwise, just change soname= to install_name, in the two spots in compile_libs.sh
$ ./compile_libs.sh
$ sudo cp *.so /usr/local/lib
$ go get -u -v -tags full github.com/blevesearch/bleve