howto specify configure options

[Matrix Mole]

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skip at pobox.com wrote:
|     Artie> Sorry if I missed this in the FAQ...Is there a simply way to
|     Artie> specify more options to the gnu configure stage? I want to
inform
|     Artie> the configure program that some libs exists at a path such as
|     Artie> "/usr/local/include" and "/usr/local/lib". Thank you! -az
|
| I think with most/all apps that use configure you can just set the LDFLAGS
| environment variable appropriately.  For example, Python's configure
- --help
| output includes this near the end:
|
|   Some influential environment variables:
|     CC          C compiler command
|     CFLAGS      C compiler flags
|     LDFLAGS     linker flags, e.g. -L<lib dir> if you have libraries in a
|                 nonstandard directory <lib dir>
|     LIBS        libraries to pass to the linker, e.g. -l<library>
|     CPPFLAGS    C/C++/Objective C preprocessor flags, e.g. -I<include
dir> if
|                 you have headers in a nonstandard directory <include dir>
|     CPP         C preprocessor
|
| That said, I have no idea if the port command intercepts those settings in
| some way.

According to man port at the very end it mentions that the file
${prefix}/etc/macports/macports.conf is one of the files loaded for
configuration options. Looking through that file, at the very end of it,
~ there is a section for extra environment variables (such as those
listed above) that are not removed from the environment during port's
operation:
- -------------- macports.conf section --------------
# Extra environment variables to keep. Any variables listed here are added
# to the list of variables that are not removed from the environment used
# while processing ports
# extra_env                     KEEP_THIS THIS_TOO
- ------------ end macports.conf section ------------

This would remain for all configuration options, but if you need to
specify alternate library paths, then you might want to leave this in at
all times. Otherwise, maybe a quit little script to modify the env
variables in that file before building the files that need the altered
environment variable would be in order.

Matrix Mole
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