Q.
I am experiencing problems in trying to compile your package (libproteingeometry-2-3-1). I tried to compile it under Ubuntu-11.10 on a 32-bit VAIO centrino-based PC (gcc vers 4.6.1) and I got the following error message:

utypes.h:16:15: error: conflicting types for ‘float_t’
/usr/include/i386-linux-gnu/bits/mathdef.h:36:21: note: previous declaration of
‘float_t’ was here

Is it possible that this error is related CPPFLAGS settings?

I have also had difficulty compiling on an Intel i7 64-b machine under Ubuntu-11.10 with the same gcc version. This time the message was:

../src-lib/.libs/libproteingeometry: undefined reference to `sincos’ ../src-lib/.libs/libproteingeometry: undefined reference to `ceil’ ../src-lib/.libs/libproteingeometry: undefined reference to `atan2′ ../src-lib/.libs/libproteingeometry: undefined reference to `acos’ ../src-lib/.libs/libproteingeometry: undefined reference to `sin’ ../src-lib/.libs/libproteingeometry: undefined reference to `rint’ ../src-lib/.libs/libproteingeometry: undefined reference to `sqrtf’ ../src-lib/.libs/libproteingeometry: undefined reference to `pow’ ../src-lib/.libs/libproteingeometry: undefined reference to `sqrt’ ../src-lib/.libs/libproteingeometry: undefined reference to `floor’ collect2: ld returned 1 exit status

A.
This problem was resolved in a strange way. The package was compiled in the /usr/local dir of an Intel i5 machine, and all the compiled material was brought to the corresponding dir of an i7 computer. Almost the same had been done for a vaio 32-bit computer using a CD with the Ubuntu 9.10 version on another 32-bit system.

There may have been some collisions with environment flags set by the preceding compilation of other packages. In particular, Amber10 and Gromacs-4-5-5 had already been installed on the i7 and vaio.