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backtrace is a drop-in replacement for libexecinfo's and glibc's backtrace API. While writing a more sophisticated backtrace interface it became obvious that writing a call compatible library was trivial. Since libexecinfo didn't work on OpenBSD and glibc's backtrace is pure linux goo it was decided to write a working replacement.

Installation and use

On OpenBSD go into the libbacktrace directory and type:

make obj
make depend
make
make includes
make install

This will compile and install libbacktrace.* in /usr/local/lib. To test the library go into the examples directory and run the following sequence of commands:

make obj
make depend
make

An example backtrace looks like this:

0x400db7 <f1+28> at examples/obj/backtrace_test
0x400e40 <f0+9> at examples/obj/backtrace_test
0x400e5b <main+20> at examples/obj/backtrace_test
0x400b61 <___start+113> at examples/obj/backtrace_test

Due to a bug in gcc one has to compile applications with the following flags -Wl,--export-dynamic in order to get human readable function names.

Stay tuned for updates that include much deeper insight into backtraces.

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