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Old 05-18-2013, 08:32 PM   #1
alpo85
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GCC header/include path configuration question...


I'm showing files installed from two versions of libstdc++, those versions being 4.4.4 and 4.4.7. (installed using yum/RHN):

Code:
[user@user ~]$ ls /usr/include/c++
4.4.4  4.4.7
And, their contents:

Code:
[user@user ~]$ ls /usr/include/c++/4.4.7
algorithm        complex             cxxabi.h             limits       stdexcept
array            complex.h           debug                list         streambuf
backward         condition_variable  deque                locale       string
bits             csetjmp             exception            map          system_error
bitset           csignal             exception_defines.h  memory       tgmath.h
c++0x_warning.h  cstdarg             exception_ptr.h      mutex        thread
cassert          cstdatomic          ext                  new          tr1
ccomplex         cstdbool            fenv.h               numeric      tr1_impl
cctype           cstddef             forward_list         ostream      tuple
cerrno           cstdint             fstream              parallel     typeinfo
cfenv            cstdio              functional           queue        type_traits
cfloat           cstdlib             initializer_list     random       unordered_map
chrono           cstring             iomanip              ratio        unordered_set
cinttypes        ctgmath             ios                  regex        utility
ciso646          ctime               iosfwd               set          valarray
climits          cwchar              iostream             sstream      vector
clocale          cwctype             istream              stack        x86_64-redhat-linux
cmath            cxxabi-forced.h     iterator             stdatomic.h
[user@user ~]$ ls /usr/include/c++/4.4.4
algorithm        complex             cxxabi.h             limits       stdexcept
array            complex.h           debug                list         streambuf
backward         condition_variable  deque                locale       string
bits             csetjmp             exception            map          system_error
bitset           csignal             exception_defines.h  memory       tgmath.h
c++0x_warning.h  cstdarg             exception_ptr.h      mutex        thread
cassert          cstdatomic          ext                  new          tr1
ccomplex         cstdbool            fenv.h               numeric      tr1_impl
cctype           cstddef             forward_list         ostream      tuple
cerrno           cstdint             fstream              parallel     typeinfo
cfenv            cstdio              functional           queue        type_traits
cfloat           cstdlib             initializer_list     random       unordered_map
chrono           cstring             iomanip              ratio        unordered_set
cinttypes        ctgmath             ios                  regex        utility
ciso646          ctime               iosfwd               set          valarray
climits          cwchar              iostream             sstream      vector
clocale          cwctype             istream              stack        x86_64-redhat-linux
cmath            cxxabi-forced.h     iterator             stdatomic.h
gcc --version: gcc (GCC) 4.4.7 20120313 (Red Hat 4.4.7-3)

Problem is, when compiling a program in Eclipse, Eclipse shows that gcc searches the 4.4.4 folder (rather than 4.4.7) for headers and includes.

How can I verify gcc is actually using the 4.4.7 folder rather than the 4.4.4 folder? And, how can I remove the 4.4.4. from gcc's search path?
 
Old 05-19-2013, 03:08 PM   #2
knudfl
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Quote:
[user@user ~]$ ls /usr/include/c++
4.4.4 4.4.7
Better use :
Code:
ls -l /usr/include/c++
... to know that '4.4.7' is just a symlink to '4.4.4'.

I.e. the RHEL6.0 gcc-c++ / libstdc++ started out originally as version 4.4.4 .
Later on version 4.4.6 installed a link '4.4.6'.
And with the current version you now have a link "4.4.7".
ftp://ftp.redhat.com/redhat/linux/en...r/en/os/SRPMS/
→ → There was a '4.4.5' for a short time too !

-

Last edited by knudfl; 05-19-2013 at 03:18 PM.
 
Old 05-19-2013, 09:18 PM   #3
alpo85
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Welp, that solves that. Thanks.
 
  


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