[ruby-core:53416] [ruby-trunk - Bug #8085] Debian configure failure because of nonexistent GCC flag -Werror=shorten-64-to-32

Issue #8085 has been updated by meta (mathew murphy).


Oops! Turns out this is a bug in ruby-build:

https://github.com/sstephenson/ruby-build/issues/325

Sorry.
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Bug #8085: Debian configure failure because of nonexistent GCC flag -Werror=shorten-64-to-32
https://bugs.ruby-lang.org/issues/8085#change-37604

Author: meta (mathew murphy)
Status: Open
Priority: Normal
Assignee: 
Category: 
Target version: 
ruby -v: 2.0.0p0


Trying to build Ruby 2.0.0 on Debian Stable:

ruby-2.0.0-p0/golf_prelude.c
/tmp/ruby-build.20130313161606.17854/ruby-2.0.0-p0 /tmp/ruby-build.20130313161606.17854 ~
checking build system type... x86_64-unknown-linux-gnu
checking host system type... x86_64-unknown-linux-gnu
checking target system type... x86_64-unknown-linux-gnu
checking for gcc... gcc
checking whether the C compiler works... no
configure: error: in `/tmp/ruby-build.20130313161606.17854/ruby-2.0.0-p0':
configure: error: C compiler cannot create executables
See `config.log' for more details

In the config.log:

gcc version 4.4.5 (Debian 4.4.5-8) 
configure:3721: $? = 0
configure:3710: gcc -V >&5
gcc: '-V' option must have argument
configure:3721: $? = 1
configure:3710: gcc -qversion >&5
gcc: unrecognized option '-qversion'
gcc: no input files
configure:3721: $? = 1
configure:3741: checking whether the C compiler works
configure:3763: gcc   -Wno-error=shorten-64-to-32 -I'/home/meta/.rbenv/versions/2.0.0-p0/include'  -L'/home/meta/.rbenv/versions/2.0.0-p0/lib'  conftest.c  >&5
cc1: error: -Werror=shorten-64-to-32: No option -Wshorten-64-to-32
configure:3767: $? = 1
configure:3805: result: no
configure: failed program was:
| /* confdefs.h */
| #define PACKAGE_NAME ""
| #define PACKAGE_TARNAME ""
| #define PACKAGE_VERSION ""
| #define PACKAGE_STRING ""
| #define PACKAGE_BUGREPORT ""
| #define PACKAGE_URL ""
| #define CANONICALIZATION_FOR_MATHN 1
| #define RUBY_BASE_NAME "ruby" !<verconf>!
| #define RUBY_VERSION_NAME RUBY_BASE_NAME"-"RUBY_LIB_VERSION !<verconf>!
| /* end confdefs.h.  */
| 
| int
| main ()
| {
| 
|   ;
|   return 0;
| }
configure:3810: error: in `/tmp/ruby-build.20130313160124.17429/ruby-2.0.0-p0':
configure:3812: error: C compiler cannot create executables
See `config.log' for more details

I can't immediately see why ./configure decided to add -Werror=shorten-64-to-32. I've successfully built 2.0 on Ubuntu with GCC 4.6, and that doesn't have the -shorten-64-to-32 warning either.


-- 
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