Hi there, I am able to build and install MonetDB v11.21.19 "Jul2015-SP4" by following and example from https://www.monetdb.org/wiki/MonetDB:Building_from_sources But when I try build MonetDB v11.27.5 on same machine I get this error (for a full log info see https://drive.google.com/drive/folders/0B7dMycp0Ku-NTlRsZW95R0xCNmM?usp=shar... ): /bin/sh ../../../../../libtool --tag=CC --mode=link gcc -DLIBPYAPI -g -O2 -D_REENTRANT -module -avoid-version -o lib_pyapi.la -rpath /home/SECDEV.LOCAL/akravchenko/MonetDB-Jul2017-SP1/lib/monetdb5 lib_pyapi_la-pyapi.lo lib_pyapi_la-unicode.lo lib_pyapi_la-pytypes.lo lib_pyapi_la-type_conversion.lo lib_pyapi_la-formatinput.lo lib_pyapi_la-connection.lo lib_pyapi_la-pyloader.lo lib_pyapi_la-emit.lo lib_pyapi_la-conversion.lo ../../../../../monetdb5/tools/libmonetdb5.la ../../../../../gdk/libbat.la -lpython2.7 -lpthread -ldl -lutil -lm -Xlinker -export-dynamic libtool: link: gcc -shared -fPIC -DPIC .libs/lib_pyapi_la-pyapi.o .libs/lib_pyapi_la-unicode.o .libs/lib_pyapi_la-pytypes.o .libs/lib_pyapi_la-type_conversion.o .libs/lib_pyapi_la-formatinput.o .libs/lib_pyapi_la-connection.o .libs/lib_pyapi_la-pyloader.o .libs/lib_pyapi_la-emit.o .libs/lib_pyapi_la-conversion.o -Wl,-rpath -Wl,/home/SECDEV.LOCAL/akravchenko/MonetDB-Jul2017-SP1/BUILD/monetdb5/tools/.libs -Wl,-rpath -Wl,/home/SECDEV.LOCAL/akravchenko/MonetDB-Jul2017-SP1/BUILD/gdk/.libs -Wl,-rpath -Wl,/home/SECDEV.LOCAL/akravchenko/MonetDB-Jul2017-SP1/BUILD/clients/mapilib/.libs -Wl,-rpath -Wl,/home/SECDEV.LOCAL/akravchenko/MonetDB-Jul2017-SP1/BUILD/common/stream/.libs -Wl,-rpath -Wl,/home/SECDEV.LOCAL/akravchenko/MonetDB-Jul2017-SP1/lib -L/home/SECDEV.LOCAL/akravchenko/MonetDB-Jul2017-SP1/BUILD/gdk/.libs -L/home/SECDEV.LOCAL/akravchenko/MonetDB-Jul2017-SP1/BUILD/clients/mapilib/.libs -L/home/SECDEV.LOCAL/akravchenko/MonetDB-Jul2017-SP1/BUILD/common/stream/.libs ../../../../../monetdb5/tools/.libs/libmonetdb5.so /home/SECDEV.LOCAL/akravchenko/MonetDB-Jul2017-SP1/BUILD/gdk/.libs/libbat.so /home/SECDEV.LOCAL/akravchenko/MonetDB-Jul2017-SP1/BUILD/ clients/mapilib/.libs/libmapi.so -lpcre -lxml2 ../../../../../gdk/.libs/libbat.so /home/SECDEV.LOCAL/akravchenko /MonetDB-Jul2017-SP1/BUILD/common/stream/.libs/libstream.so -lsnappy -lssl -lcrypto -lz -lpython2.7 -lpthread -ldl -lutil -lm -g -O2 -Wl,-export-dynamic -pthread -Wl,-soname -Wl,lib_pyapi.so -o .libs/lib_pyapi.so /usr/bin/ld: cannot find -lpython2.7 collect2: ld returned 1 exit status make[11]: *** [lib_pyapi.la] Error 1 make[11]: Leaving directory `/home/SECDEV.LOCAL/akravchenk o/MonetDB-Jul2017-SP1/BUILD/sql/backends/monet5/UDF/pyapi' make[10]: *** [all] Error 2 make[10]: Leaving directory `/home/SECDEV.LOCAL/akravchenk o/MonetDB-Jul2017-SP1/BUILD/sql/backends/monet5/UDF/pyapi' make[9]: *** [all-recursive] Error 1 make[9]: Leaving directory `/home/SECDEV.LOCAL/akravchenk o/MonetDB-Jul2017-SP1/BUILD/sql/backends/monet5/UDF' make[8]: *** [all] Error 2 make[8]: Leaving directory `/home/SECDEV.LOCAL/akravchenk o/MonetDB-Jul2017-SP1/BUILD/sql/backends/monet5/UDF' make[7]: *** [all-recursive] Error 1 make[7]: Leaving directory `/home/SECDEV.LOCAL/akravchenk o/MonetDB-Jul2017-SP1/BUILD/sql/backends/monet5' make[6]: *** [all] Error 2 make[6]: Leaving directory `/home/SECDEV.LOCAL/akravchenk o/MonetDB-Jul2017-SP1/BUILD/sql/backends/monet5' make[5]: *** [all-recursive] Error 1 make[5]: Leaving directory `/home/SECDEV.LOCAL/akravchenk o/MonetDB-Jul2017-SP1/BUILD/sql/backends' make[4]: *** [all] Error 2 make[4]: Leaving directory `/home/SECDEV.LOCAL/akravchenk o/MonetDB-Jul2017-SP1/BUILD/sql/backends' make[3]: *** [all-recursive] Error 1 make[3]: Leaving directory `/home/SECDEV.LOCAL/akravchenk o/MonetDB-Jul2017-SP1/BUILD/sql' make[2]: *** [all] Error 2 make[2]: Leaving directory `/home/SECDEV.LOCAL/akravchenk o/MonetDB-Jul2017-SP1/BUILD/sql' make[1]: *** [all-recursive] Error 1 make[1]: Leaving directory `/home/SECDEV.LOCAL/akravchenk o/MonetDB-Jul2017-SP1/BUILD' make: *** [all] Error 2 Thank you, Anton