------- Additional Comments From jklowden at schemamania dot org 2010-09-03
18:15 -------
On further investigation, the linker might not be involved. "c++ -v" doesn't
show collect2 being invoked. The problem might be caused by the way gcc invokes
cc1plus. I wonder about "--output-pch= ldtest", below:
$ c++ -o ldtest ldtest.C ldtest.h -v
Using built-in specs.
Target: x86_64-redhat-linux
Configured with: ../configure --prefix=/usr --mandir=/usr/share/man
--infodir=/usr/share/info --enable-shared --enable-threads=posix
--enable-checking=release --with-system-zlib --enable-__cxa_atexit
--disable-libunwind-exceptions --enable-libgcj-multifile
--enable-languages=c,c++,objc,obj-c++,java,fortran,ada --enable-java-awt=gtk
--disable-dssi --enable-plugin
--with-java-home=/usr/lib/jvm/java-1.4.2-gcj-1.4.2.0/jre --with-cpu=generic
--host=x86_64-redhat-linux
Thread model: posix
gcc version 4.1.2 20080704 (Red Hat 4.1.2-44)
/usr/libexec/gcc/x86_64-redhat-linux/4.1.2/cc1plus -quiet -v -D_GNU_SOURCE
ldtest.C -quiet -dumpbase ldtest.C -mtune=generic -auxbase ldtest -version -o
/tmp/ccI315nM.s
ignoring nonexistent directory
"/usr/lib/gcc/x86_64-redhat-linux/4.1.2/../../../../x86_64-redhat-linux/include"
#include "..." search starts here:
#include <...> search starts here:
/usr/lib/gcc/x86_64-redhat-linux/4.1.2/../../../../include/c++/4.1.2
/usr/lib/gcc/x86_64-redhat-linux/4.1.2/../../../../include/c++/4.1.2/x86_64-redhat-linux
/usr/lib/gcc/x86_64-redhat-linux/4.1.2/../../../../include/c++/4.1.2/backward
/usr/local/include
/usr/lib/gcc/x86_64-redhat-linux/4.1.2/include
/usr/include
End of search list.
GNU C++ version 4.1.2 20080704 (Red Hat 4.1.2-44) (x86_64-redhat-linux)
compiled by GNU C version 4.1.2 20080704 (Red Hat 4.1.2-44).
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
Compiler executable checksum: 2d02d8750f9b337bb19a7dd5b4e2167e
ldtest.C: In function int main(int, char**):
ldtest.C:4: error: r was not declared in this scope
ldtest.C:4: error: expected `;' before eturn
/usr/libexec/gcc/x86_64-redhat-linux/4.1.2/cc1plus -quiet -v -D_GNU_SOURCE
ldtest.h -quiet -dumpbase ldtest.h -mtune=generic -auxbase ldtest -version -o
/tmp/ccI315nM.s --output-pch= ldtest
ignoring nonexistent directory
"/usr/lib/gcc/x86_64-redhat-linux/4.1.2/../../../../x86_64-redhat-linux/include"
#include "..." search starts here:
#include <...> search starts here:
/usr/lib/gcc/x86_64-redhat-linux/4.1.2/../../../../include/c++/4.1.2
/usr/lib/gcc/x86_64-redhat-linux/4.1.2/../../../../include/c++/4.1.2/x86_64-redhat-linux
/usr/lib/gcc/x86_64-redhat-linux/4.1.2/../../../../include/c++/4.1.2/backward
/usr/local/include
/usr/lib/gcc/x86_64-redhat-linux/4.1.2/include
/usr/include
End of search list.
GNU C++ version 4.1.2 20080704 (Red Hat 4.1.2-44) (x86_64-redhat-linux)
compiled by GNU C version 4.1.2 20080704 (Red Hat 4.1.2-44).
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
Compiler executable checksum: 2d02d8750f9b337bb19a7dd5b4e2167e
--
http://sourceware.org/bugzilla/show_bug.cgi?id=11977
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