[Pkg-scicomp-devel] Bug#417451: FTBFS with GCC 4.3: missing #includes

Martin Michlmayr tbm at cyrius.com
Mon Apr 2 19:45:00 UTC 2007


Package: netgen
Version: 4.4-7
Usertags: ftbfs-gcc-4.3

Your package fails to build with GCC 4.3.  Version 4.3 has not been
released yet but I'm building with a snapshot in order to find errors
and give people an advance warning.  In GCC 4.3, the C++ header
dependencies have been cleaned up.  The advantage of this is that
programs will compile faster.  The downside is that you actually
need to directly #include everything you use (but you really should
do this anyway, otherwise your program won't work with any compiler
other than GCC).  Some background of this can be found at
http://gcc.gnu.org/PR28080

You can reproduce this problem with gcc-snapshot (20070326-1 or higher)
from unstable.

> Automatic build of netgen_4.4-7 on coconut0 by sbuild/ia64 0.49
...
> comp/fespace.cpp: In member function 'virtual void ngcomp::NonConformingFESpace::GetDofNrs(int, ngstd::ARRAY<int>&) const':
> comp/fespace.cpp:2147: error: call of overloaded 'abs(const int&)' is ambiguous
> /usr/lib/gcc-snapshot/lib/gcc/ia64-linux-gnu/4.3.0/../../../../include/c++/4.3.0/cmath:88: note: candidates are: double std::abs(double)
> /usr/lib/gcc-snapshot/lib/gcc/ia64-linux-gnu/4.3.0/../../../../include/c++/4.3.0/cmath:92: note:                 float std::abs(float)
> /usr/lib/gcc-snapshot/lib/gcc/ia64-linux-gnu/4.3.0/../../../../include/c++/4.3.0/cmath:96: note:                 long double std::abs(long double)
> solve/shapetester.cpp: In function 'int ngsolve::NGS_DrawShape(void*, Tcl_Interp*, int, const char**)':
> solve/shapetester.cpp:118: error: 'atoi' was not declared in this scope

Sorry, I have only a patch for this issue and not the whole package,
because I couldn't figure out how the build system works.

--- ngsolve/comp/fespace.cpp~	2007-04-02 19:39:12.000000000 +0000
+++ ngsolve/comp/fespace.cpp	2007-04-02 19:39:20.000000000 +0000
@@ -10,6 +10,7 @@
 
 #include <comp.hpp>
 #include <multigrid.hpp>
+#include <cstdlib>
 using namespace ngmg;
 
 namespace ngcomp
--- ngsolve/solve/shapetester.cpp~	2007-04-02 19:36:16.000000000 +0000
+++ ngsolve/solve/shapetester.cpp	2007-04-02 19:36:43.000000000 +0000
@@ -1,6 +1,7 @@
 
 #include <solve.hpp>
 // #include <nginterface.h>
+#include <cstdlib>
 
 
 namespace ngsolve

-- 
Martin Michlmayr
http://www.cyrius.com/




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