When using a multi-configuration job, with a Configuration Matrix, if the axis values have spaces then those spaces appear in the directory used for the source code checkout. Although most builds should be able to cope with it, it's fairly unusual and an obstacle when the build cannot handle it yet.

For instance, I have this axis name:
configureoptions
and these axis values:
"--disable-calendar --disable-weather"
""

(Which I pass to our ./autogen.sh in the "Execute Shell" build step.)

Then the spaces in the path cause our build to fail:

make[4]: Leaving directory `/var/lib/jenkins/workspace/evolution-data-server/configureoptions/--disable-calendar --disable-weather/camel'
Making all in providers
make[4]: Entering directory `/var/lib/jenkins/workspace/evolution-data-server/configureoptions/--disable-calendar --disable-weather/camel/providers'
Making all in pop3
make[5]: Entering directory `/var/lib/jenkins/workspace/evolution-data-server/configureoptions/--disable-calendar --disable-weather/camel/providers/pop3'
CC libcamelpop3_la-camel-pop3-engine.lo
CC libcamelpop3_la-camel-pop3-folder.lo
CC libcamelpop3_la-camel-pop3-provider.lo
CC libcamelpop3_la-camel-pop3-settings.lo
CC libcamelpop3_la-camel-pop3-stream.lo
CC libcamelpop3_la-camel-pop3-store.lo
CCLD libcamelpop3.la
/bin/sed: unrecognized option '--disable-weather/camel/libcamel-1.2.la'
Usage: /bin/sed [OPTION]...

[input-file]...