[Bug other/63509] New: Misleading error message when building gcc without C++ compiler installed

[Bug other/63509] New: Misleading error message when building gcc without C++ compiler installed

[sajarvis at bu dot edu]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63509

            Bug ID: 63509
           Summary: Misleading error message when building gcc without C++
                    compiler installed
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: other
          Assignee: unassigned at gcc dot gnu.org
          Reporter: sajarvis at bu dot edu

Created attachment 33685
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=33685&action=edit
Full output during make.

When building gcc with no C++ compiler installed, configuration succeeds, then
make fails with error message: 

configure: error: error verifying int64_t uses long long

Steps to cause:
1) Don't install a C++ compiler
2) $ ./configure --prefix=$HOME/dev/gcc/bld --enable-multilib
3) $ make

I think the error should be more specific to the issue (no C++ compiler found)
and probably caught earlier.

System:
Fedora 20, Linux 3.16
building gcc trunk, version r216105


More of the log (full log attached):
[...]
checking for int16_t... yes
checking for int32_t... yes
checking for int64_t... yes
checking for long long int... yes
checking for intmax_t... yes
checking for intptr_t... yes
checking for uint8_t... yes
checking for uint16_t... yes
checking for uint32_t... yes
checking for uint64_t... yes
checking for unsigned long long int... yes
checking for uintmax_t... yes
checking for uintptr_t... yes
checking for int64_t underlying type... long long
configure: error: error verifying int64_t uses long long
make[2]: *** [configure-stage1-gcc] Error 1
make[2]: Leaving directory `/home/sjarvis/dev/gcc/srcdir'
make[1]: *** [stage1-bubble] Error 2
make[1]: Leaving directory `/home/sjarvis/dev/gcc/srcdir'
make: *** [all] Error 2

[Bug other/63509] Misleading error message when building gcc without C++ compiler installed

[manu at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63509

Manuel López-Ibáñez <manu at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |tbsaunde at gcc dot gnu.org

--- Comment #1 from Manuel López-Ibáñez <manu at gcc dot gnu.org> ---
*** Bug 63516 has been marked as a duplicate of this bug. ***
>From gcc-bugs-return-463870-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Oct 12 20:02:15 2014
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Subject: [Bug bootstrap/63516] error when trying to build without a c++ compiler could be better
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63516

Manuel López-Ibáñez <manu at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
                 CC|                            |manu at gcc dot gnu.org
         Resolution|---                         |DUPLICATE

--- Comment #1 from Manuel López-Ibáñez <manu at gcc dot gnu.org> ---
Dup.

*** This bug has been marked as a duplicate of bug 63509 ***
>From gcc-bugs-return-463872-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Oct 12 23:14:47 2014
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From: "olegendo at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/54760] [SH] Add __builtin_thread_pointer, __builtin_set_thread_pointer
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https://gcc.gnu.org/bugzilla/show_bug.cgi?idT760

--- Comment #15 from Oleg Endo <olegendo at gcc dot gnu.org> ---
Author: olegendo
Date: Sun Oct 12 23:14:07 2014
New Revision: 216128

URL: https://gcc.gnu.org/viewcvs?rev!6128&root=gcc&view=rev
Log:
gcc/
    PR target/59401
    * config/sh/sh-protos (sh_find_equiv_gbr_addr): Use rtx_insn* instead
    of rtx.
    * config/sh/sh.c (sh_find_equiv_gbr_addr): Use def chains instead of
    insn walking.
    (sh_find_equiv_gbr_addr): Do nothing if input mem is already a GBR
    address.  Use def chains to handle GBR clobbering call insns.

gcc/testsuite/
    PR target/59401
    PR target/54760
    * gcc.target/pr54760-5.c: New.
    * gcc.target/pr54760-6.c: New.
    * gcc.target/sh/pr59401-1.c: New.

Added:
    trunk/gcc/testsuite/gcc.target/sh/pr54760-5.c
    trunk/gcc/testsuite/gcc.target/sh/pr54760-6.c
    trunk/gcc/testsuite/gcc.target/sh/pr59401-1.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/config/sh/sh-protos.h
    trunk/gcc/config/sh/sh.c
    trunk/gcc/testsuite/ChangeLog

[Bug other/63509] Misleading error message when building gcc without C++ compiler installed

[rpsene at linux dot vnet.ibm.com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63509

Rafael Sene <rpsene at linux dot vnet.ibm.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |rpsene at linux dot vnet.ibm.com

--- Comment #2 from Rafael Sene <rpsene at linux dot vnet.ibm.com> ---
Just got the same issue, solved installing c++. I was building gcc on Fedora
21.

[Bug other/63509] Misleading error message when building gcc without C++ compiler installed

[rjones at redhat dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63509

Richard W.M. Jones <rjones at redhat dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |rjones at redhat dot com

--- Comment #3 from Richard W.M. Jones <rjones at redhat dot com> ---
Can confirm this happens also on Fedora 23.
Installing gcc-c++ fixes it.

[Bug other/63509] Misleading error message when building gcc without C++ compiler installed

[paul at greenberg dot pro]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63509

Paul Greenberg <paul at greenberg dot pro> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |paul at greenberg dot pro

--- Comment #5 from Paul Greenberg <paul at greenberg dot pro> ---
The issue is likely that CXX environment variable is set to a non-existent
location.

Verify where it point to:

```
echo $CXX
```

[Bug other/63509] Misleading error message when building gcc without C++ compiler installed

[tzachinoy at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63509

TzachiNoy <tzachinoy at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |tzachinoy at gmail dot com

--- Comment #6 from TzachiNoy <tzachinoy at gmail dot com> ---
same on Debian 3.16

`apt-get install g++` fixed the problem.

before installing: CXX was undefined