I would like to know the "proper" method for adding an "--enable-debug"
option to my build using autotools. Perhaps what I should call this is
a "best-practice" or something similar. So, some googling and Autotools
Mythbusters suggests it should be AC_ARG_ENABLE. So, I put this into my
configure.ac file:
AC_ARG_ENABLE([debug],
AC_HELP_STRING([--enable-debug],
[Additional output from binary and turns off
optimizations]),
[CXXCPP="${CXXCPP} -DDEBUG"
CXXFLAGS="${CXXFLAGS} -O0 -ggdb"],
[CXXCPP=${CXXCPP}
CXXFLAGS="${CXXFLAGS} -O2 -g"])
However, when I run configure, I get this:
checking how to run the C++ preprocessor... -DDEBUG
configure: error: in `/home/afalanga/devel/o2archanges':
configure: error: C++ preprocessor " -DDEBUG" fails sanity check
See `config.log' for more details
So, I look in config.log but this doesn't really help. Is there a
better way? Should I instead make it add "#define DEBUG" in config.h if
"--enable-debug" is provided? Did I make an incorrect assumption in the
actions arguments to AC_ARG_ENABLE()? Any help is greatly appreciated.
Andy
