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Flight Gear uses the Gnu autoconf and automake tools for managing
Makefiles. Key input files for this system are:
configure.in - Top level directory
Makefile.am - One in each subdirectory
Include/config.in - input file for building config.h
If you need to modify any of these files, you will need to install the
following packages. If you don't have a prebuilt package for your OS,
you can fetch them from the locations listed below:
- GNU autoconf (available from ftp://prep.ai.mit.edu/pub/gnu)
- GNU automake (available from ftp://ftp.cygnus.com/pub/tromey)
After making a change to configure.in you will need to run:
aclocal ; autoheader ; automake -a ; autoconf
Then follow the regular build procedure:
./configure; make; make install
For debuging purposes you might want to try something like:
CFLAGS=-Wall CXXFLAGS=-Wall ./configure; make; make install
For full optimization using the EGCS compiler on an Intel processor you
could try something like:
MACH="-mpentium" # -m486 -mpentiumpro etc.
export CC=egcc # for Linux
export CFLAGS="-Wall -O5 -fomit-frame-pointer -ffast-math -funroll-loops $MACH"
export CXXFLAGS="-Wall -O5 -fomit-frame-pointer -ffast-math -funroll-loops $MACH"
./configure
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