I am using SunOS. In compiling a project, gcc reported that <ext/pool_allocator.h> is not found. I think this file comes with the gcc extention library, but I could not find it (by "find / -name pool_allocator.h")

The gcc version is 2.95.3. I don't have the permission to install to /usr/local/include directory.

I am not sure if the file is dependent on the libstdc++ version? Could I install a new version of gcc to my own directory (I only have around 100MB to allocate to gcc in that case...)? A solution to this situation is appreciated.

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Here are some stbstdc++ dynamic libs found in the system.
/usr/sunfreeware.com/lib/libstdc++.a
/usr/sunfreeware.com/lib/libstdc++.la
/usr/sunfreeware.com/lib/libstdc++.so
/usr/sunfreeware.com/lib/libstdc++.so.4
/usr/sunfreeware.com/lib/libstdc++.so.4.0.0
/opt/sfw/lib/libstdc++.a.2.10.0
/opt/sfw/lib/libstdc++.so.2.10.0

Read the header documentation here:
http://gcc.gnu.org/onlinedocs/libstd...8h-source.html

It is supported only in gcc 3.0 and up. Even if you had the header, the object would not link correctly.