Recompile the library before compiling a test

[ClementPernet]

When using the --enable-precompilation option, a change in the source code triggers the recompilation of the whole library binaries when calling make but not when compiling a test or the testsuite. This may lead to bugs, since the outdated library binaries will co-exist with freshly compiled code for the specializations that are not covered by the precompilation.