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Fix a build problem with clang and --with-opt-dir.

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* configure.in: Fix a build problem with clang and --with-opt-dir.
  If ruby is configured with --with-opt-dir=dir when using clang
  as compiler, a warning `clang: warning: argument unused during
  compilation: '-I dir'` is emitted almost every time clang
  compiles a file.  Unfortunately, RUBY_CHECK_PRINTF_PREFIX takes
  any output from the compiler as fatal error, and the check thus
  fails due to the warning.  This is an attempt to fix the problem
  by adding a flag -Qunused-arguments to CFLAGS locally in the
  function to suppress the warning. [ruby-dev:48062] [Bug #9658]
  [Fixes GH-571] https://github.com/ruby/ruby/pull/571

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@45378 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
knu 2014-03-21 12:59:08 +00:00
parent 27b9d591a5
commit cc4271c955
2 changed files with 17 additions and 1 deletions
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13
ChangeLog
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@ -1,3 +1,16 @@
Fri Mar 21 21:57:34 2014 Akinori MUSHA <knu@iDaemons.org>
* configure.in: Fix a build problem with clang and --with-opt-dir.
If ruby is configured with --with-opt-dir=dir when using clang
as compiler, a warning `clang: warning: argument unused during
compilation: '-I dir'` is emitted almost every time clang
compiles a file. Unfortunately, RUBY_CHECK_PRINTF_PREFIX takes
any output from the compiler as fatal error, and the check thus
fails due to the warning. This is an attempt to fix the problem
by adding a flag -Qunused-arguments to CFLAGS locally in the
function to suppress the warning. [ruby-dev:48062] [Bug #9658]
[Fixes GH-571] https://github.com/ruby/ruby/pull/571
Fri Mar 21 16:31:56 2014 Zachary Scott <e@zzak.io>
* gc.c: [DOC] Fix call-seq for GC.start by @jasonrclark [Fixes GH-572]

5
configure.in
View file

@ -779,6 +779,8 @@ if test "$GCC:${warnflags+set}:no" = yes::no; then
rb_cv_warnflags="$warnflags"
warnflags=
fi
RUBY_TRY_CFLAGS(-Qunused-arguments, [RUBY_APPEND_OPTIONS(rb_cv_wsuppress_flags, -Qunused-arguments)])
if test "$GCC" = yes; then
# -D_FORTIFY_SOURCE
# When defined _FORTIFY_SOURCE, glibc enables some additional sanity
@ -1302,7 +1304,8 @@ AC_DEFINE_UNQUOTED(PACKED_STRUCT_UNALIGNED(x), $packed_struct_unaligned)
AC_DEFUN([RUBY_CHECK_PRINTF_PREFIX], [
AC_CACHE_CHECK([for printf prefix for $1], [rb_cv_pri_prefix_]AS_TR_SH($1),[
[rb_cv_pri_prefix_]AS_TR_SH($1)=[NONE]
RUBY_WERROR_FLAG(for pri in $2; do
RUBY_WERROR_FLAG(RUBY_APPEND_OPTIONS(CFLAGS, $rb_cv_wsuppress_flags)
for pri in $2; do
AC_TRY_COMPILE(
[@%:@include <stdio.h>
@%:@include <stddef.h>