On 28 January 2014 18:09, John Dubchak wrote: > That's what brings me to the list, I am verifying if I have built gcc > incorrectly or trying to determine other potential causes of this error. It's far more likely to be user error rather than a problem with your GCC build (although I have to wonder why you passed so many redundant options to the GCC configure script, including specifying --with-arch_32 at the same time as --disable-multilib). > Also, in the preprocessed output from yesterday, I verified that siginfo_t > is being defined: In that case one possibility is that you haven't closed a namespace properly. e.g. if you #include <signal.h> inside a namespace block, then #include <sys/wait.h> outside the block, it won't be able to find siginfo_t, because it was declared as something like foo::siginfo_t. Trying to debug your code from incomplete snippets is impossible. Please reduce your code to the smallest example that reproduces the problem, and then show us that. If you can't reproduce the problem with a reduced example, examine what's different between it and your real code.