bootstrap/4406: wrong include file search paths compiled into cc1

[Artur dot Klauser at computer dot org]

>Number:         4406
>Category:       bootstrap
>Synopsis:       wrong include file search paths compiled into cc1
>Confidential:   no
>Severity:       non-critical
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          rejects-legal
>Submitter-Id:   net
>Arrival-Date:   Wed Sep 26 16:46:01 PDT 2001
>Closed-Date:
>Last-Modified:
>Originator:     
>Release:        3.0.1
>Organization:
>Environment:
System: Linux shlc0014.shr.intel.com 2.2.17-14 #1 Thu May 17 13:37:40 PDT 2001 i686 unknown
Architecture: i686

	
host: i686-pc-linux-gnu
build: i686-pc-linux-gnu
target: i686-pc-linux-gnu
configured with: /proj/vssad/local/src/g/gcc-3.0.1/configure --prefix=/proj/vssad/local/common --exec-prefix=/proj/vssad/local/i386_linux22 --with-gxx-include-dir=/proj/vssad/local/common/include/g++-v3 --enable-threads=posix
>Description:
	
When trying to configure GCC for multi-platform install (--prefix
different from --exec-prefix), the include search paths in (at least)
cc1 are misconfigured and point to non-existing directories.
Note 1: the installation of the include files is still in the correct places.
Note 2: I have only tested the C++ installation - other languages
        might be affected.

>How-To-Repeat:
	
./configure  --prefix=/proj/vssad/local/common --exec-prefix=/proj/vssad/local/i386_linux22

results in the following output of cc1 (note lines maked with *****:
-------------------------------------------------------------------------------
# /proj/vssad/local/i386_linux22/bin/g++ -MD -c -o x.o -O0 -g -v x.cpp
Reading specs from /proj/vssad/local/i386_linux22/lib/gcc-lib/i686-pc-linux-gnu/3.0.1/specs
Configured with: /proj/vssad/local/src/g/gcc-3.0.1/configure --prefix=/proj/vssad/local/common --exec-prefix=/proj/vssad/local/i386_linux22 --enable-threads=posix
Thread model: posix
gcc version 3.0.1
 /proj/vssad/local/i386_linux22/lib/gcc-lib/i686-pc-linux-gnu/3.0.1/cc1plus -v -MM -MF x.d -MQ x.o -D__GNUC__=3 -D__GNUC_MINOR__=0 -D__GNUC_PATCHLEVEL__=1 -D__ELF__ -Dunix -Dlinux -D__ELF__ -D__unix__ -D__linux__ -D__unix -D__linux -Asystem=posix -D__NO_INLINE__ -D__STDC_HOSTED__=1 -D_GNU_SOURCE -Acpu=i386 -Amachine=i386 -Di386 -D__i386 -D__i386__ -D__tune_i686__ -D__tune_pentiumpro__ x.cpp -D__GNUG__=3 -D__GXX_DEPRECATED -D__EXCEPTIONS -D__GXX_ABI_VERSION=100 -quiet -dumpbase x.cpp -g -O0 -version -o /tmp/ccLWOnFB.s
GNU CPP version 3.0.1 (cpplib) (i386 Linux/ELF)
GNU C++ version 3.0.1 (i686-pc-linux-gnu)
        compiled by GNU C version 3.0.1.
***** ignoring nonexistent directory "/include/g++-v3"
***** ignoring nonexistent directory "/include/g++-v3/i686-pc-linux-gnu"
***** ignoring nonexistent directory "/include/g++-v3/backward"
***** ignoring nonexistent directory "/proj/i686-pc-linux-gnu/include"
#include "..." search starts here:
#include <...> search starts here:
 /usr/local/include
 /proj/vssad/local/i386_linux22/lib/gcc-lib/i686-pc-linux-gnu/3.0.1/include
 /usr/include
End of search list.
-------------------------------------------------------------------------------

Looking at cc1 reveals that the wrong include search paths have been
compiled in:
-------------------------------------------------------------------------------
### the problem seems to be that the compiled in path is cooked up wrong ###
Linux-14:~# strings /proj/vssad/local/i386_linux22/lib/gcc-lib/i686-pc-linux-gnu/3.0.1/cc1 | grep include
[... some lines deleted ...]
/proj/vssad/local/i386_linux22/lib/gcc-lib/i686-pc-linux-gnu/3.0.1/../../../../../../../../include/g++-v3
/proj/vssad/local/i386_linux22/lib/gcc-lib/i686-pc-linux-gnu/3.0.1/../../../../../../../../include/g++-v3/i686-pc-linux-gnu
/proj/vssad/local/i386_linux22/lib/gcc-lib/i686-pc-linux-gnu/3.0.1/../../../../../../../../include/g++-v3/backward
/usr/local/include
/proj/vssad/local/i386_linux22/lib/gcc-lib/i686-pc-linux-gnu/3.0.1/include
/proj/vssad/local/i386_linux22/lib/gcc-lib/i686-pc-linux-gnu/3.0.1/../../../../../../../i686-pc-linux-gnu/include
/usr/include
/proj/vssad/local/i386_linux22/lib/gcc-lib/i686-pc-linux-gnu/3.0.1/include
-------------------------------------------------------------------------------

>Fix:
	
Workaround can be done with
--with-gxx-include-dir=/proj/vssad/local/common/include/g++-v3

A real fix would be required in the configure procedure or Makefile
that generates the paths to be compiled into cc1.
>Release-Note:
>Audit-Trail:
>Unformatted: