From: Jürgen Hunold (hunold_at_[hidden])
Date: 2005-05-27 01:19:58
Hi !
I'm having problems compiling the BGL graphiv parser on amd64.
The error message is:
------snip-------
gcc.link.dll
bin.v2/libs/graph/build/gcc-3.4/debug/bgl-viz-gcc34-d-1_33.so.1.33.0
/usr/bin/ld: bin.v2/libs/graph/build/gcc-3.4/debug/graphviz_graph_parser.o:
relocation R_X86_64_32 can not be used when making a shared object; recompile
with -fPIC
bin.v2/libs/graph/build/gcc-3.4/debug/graphviz_graph_parser.o: could not read
symbols: Bad value
collect2: ld returned 1 exit status
--------snap-------------
The problem is that the compiler flag -fPIC is not added to the command line
when compiling the file graphviz_graph_parser.cpp
The please find a full compile command attached.
I found the logic to add -fPIC in gcc.jam at line 88 but it seems to add -fPIC
when _linking_ the shared library.
The following patch corrects this and adds -fPIC to the compiler command line
when compiling object files for shared libraries.
I can vaguely remember that -fPIC was removed from the command line because
gcc _always_ created relocatable code, at least on 32-bit cpu's.
Yours,
Jürgen
--
* Dipl.-Math. Jürgen Hunold ! Institut für Verkehrswesen, Eisenbahnbau
* voice: ++49 511 762-2529 ! und -betrieb, Universität Hannover
* fax : ++49 511 762-3001 ! Appelstrasse 9a, D-30167 Hannover
* hunold_at_[hidden] ! www.ive.uni-hannover.de
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Index: tools/build/v2/tools/gcc.jam
===================================================================
RCS file: /cvsroot/boost/boost/tools/build/v2/tools/gcc.jam,v
retrieving revision 1.49
diff -u -3 -p -r1.49 gcc.jam
--- tools/build/v2/tools/gcc.jam 22 Mar 2005 08:06:02 -0000 1.49
+++ tools/build/v2/tools/gcc.jam 27 May 2005 06:15:06 -0000
@@ -87,7 +87,7 @@ flags gcc.compile OPTIONS <profiling>on
# inside 'init'.
if [ os.name ] != CYGWIN && [ os.name ] != NT
{
- flags gcc.compile OPTIONS <link>shared/<main-target-type>LIB : -fPIC ;
+ flags gcc.compile OPTIONS <link>shared : -fPIC ;
}
if [ os.name ] != NT
{
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