ensuring all object files are compiled with -fexceptions

xorquewasp at googlemail.com xorquewasp at googlemail.com
Fri Jan 16 20:01:16 EST 2009


I'm working with some code that needs to raise exceptions inside
callbacks passed to PHYSFS_enumerateFilesCallback().

The usual way to do this (as with all other C libraries I'm using
in this manner) is to compile the PhysFS library with the
-fexceptions compiler flag.

Failing to do this with any library results in any exception raised
inside a callback calling abort() immediately instead of unwinding
the call stack as expected.

I'm using the following, to compile PhysFS:


  export CC="gcc43"
  export LD="gcc43"

  # clean cmake cache
  for file in `hg status | grep -v BUILD.sh | awk '{print $2}'`
    echo remove $file
    rm -f $file

  cmake \
    -DCMAKE_C_FLAGS="-g -fexceptions" \


However, I'm still seeing the behaviour mentioned above, with exceptions
failing to unwind the call stack and I have to assume that the values
given in $CMAKE_C_FLAGS aren't being applied to all (or any) object

Not being familiar with cmake, what's the correct way to force all
objects to be compiled with these flags?


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