This process was sometimes called linkage editing and the output known as a load module. A compiler works with what are sometimes called 3GL and higher-level languages. An assembler works on programs written using a processor's assembler language.
In general, however, when between vowels (as in exactamente) the Spanish x is pronounced like the English ks sound but softer or less explosive. When it comes before another consonant (as in expediciÃ³n), it has the s sound in some regions/countries but the soft ks sound in others.
In a very small number of words, of which the most common are: trouxe, trouxemos, etc. (forms of the verb trazer), prÃ³ximo, auxÃ­lio, sintaxe. before a consonant, x is pronounced like an s: - E.g. extraordinÃ¡rio = estraordinÃ¡rio*, expressÃ£o = espressÃ£o*, etc. * Or eistraordinÃ¡rio, for some speakers.