here you have it: 

andrea-valles-computer:/ andreavalle$  texexec --make --verbose metafun

TeXExec | using search method 'kpsewhich'

TeXExec | updating file database

mktexlsr: Updating /usr/local/texlive/2007/../texmf-local/ls-R...

mktexlsr: Updating /usr/local/texlive/2007/texmf/ls-R...

mktexlsr: Updating /usr/local/texlive/2007/texmf-config/ls-R...

mktexlsr: Updating /usr/local/texlive/2007/texmf-dist/ls-R...

mktexlsr: Updating /usr/local/texlive/2007/texmf-var/ls-R...

mktexlsr: Done.

TeXExec | using mp engine mpost

TeXExec | using mps format path /usr/local/texlive/2007/texmf-var/web2c

TeXExec | generating mps format metafun

TeXExec | running: mpost -progname=metafun --ini -translate-file=natural.tcx --8bit metafun

This is MetaPost, Version 0.993 (Web2C 7.5.6) (INIMP)

(/usr/local/texlive/2007/texmf/web2c/natural.tcx)

(/usr/local/texlive/2007/texmf-dist/metapost/context/base/metafun.mp

(/usr/local/texlive/2007/texmf-dist/metapost/context/base/mp-base.mp

Preloading the plain mem file, version 0.63)

(/usr/local/texlive/2007/texmf-dist/metapost/context/base/mp-tool.mp)

(/usr/local/texlive/2007/texmf-dist/metapost/context/base/mp-spec.mp)

(/usr/local/texlive/2007/texmf-dist/metapost/context/base/mp-core.mp)

(/usr/local/texlive/2007/texmf-dist/metapost/context/base/mp-page.mp)

(/usr/local/texlive/2007/texmf-dist/metapost/context/base/mp-text.mp)

(/usr/local/texlive/2007/texmf-dist/metapost/context/base/mp-txts.mp)

(/usr/local/texlive/2007/texmf-dist/metapost/context/base/mp-shap.mp)

(/usr/local/texlive/2007/texmf-dist/metapost/context/base/mp-butt.mp)

(/usr/local/texlive/2007/texmf-dist/metapost/context/base/mp-char.mp)

(/usr/local/texlive/2007/texmf-dist/metapost/context/base/mp-step.mp)

(/usr/local/texlive/2007/texmf-dist/metapost/context/base/mp-grph.mp)

(/usr/local/texlive/2007/texmf-dist/metapost/context/base/mp-figs.mp)

(/usr/local/texlive/2007/texmf-dist/metapost/context/base/mp-grid.mp

(/usr/local/texlive/2007/texmf-dist/metapost/context/base/mp-form.mp

(/usr/local/texlive/2007/texmf-dist/metapost/base/string.mp)

(/usr/local/texlive/2007/texmf-dist/metapost/base/marith.mp

(/usr/local/texlive/2007/texmf-dist/metapost/base/string.mp))))

(/usr/local/texlive/2007/texmf-dist/metapost/context/base/mp-func.mp) )

Beginning to dump on file metafun.mem

(mem=metafun 2007.5.16)

at most 3038 strings of total length 40262

48330 memory locations dumped; current usage is 12622&35507

1761 symbolic tokens

Transcript written on metafun.log.

TeXExec |

TeXExec | mps engine path: /usr/local/texlive/2007/texmf-var/web2c

TeXExec |

TeXExec | mps: 16/05/2007 12:48:41 > /usr/local/texlive/2007/texmf-var/web2c/metafun.mem (481444)

TeXExec |

TeXExec | runtime: 3.825827

TeXExec | option 'verbose' is set to 'true'

TeXExec | option 'randomseed' is set to '1040'

TeXExec | option 'mainlanguage' is set to 'standard'

TeXExec | option 'bodyfont' is set to 'standard'

TeXExec | option 'language' is set to 'standard'

TeXExec | option 'engine' is set to 'standard'

TeXExec | option 'distribution' is set to 'web2c'

TeXExec | option 'texformats' is set to 'metafun'

TeXExec | option 'mpsformats' is set to 'metafun'

TeXExec | option 'progname' is set to 'standard'

TeXExec | option 'interface' is set to 'standard'

TeXExec | option 'runs' is set to '8'

TeXExec | option 'backend' is set to 'standard'

paths   : mpost -> /usr/local/texlive/2007/texmf-var/web2c

andrea-valles-computer:/ andreavalle$