diff options
| author | knu <knu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2014-03-21 12:59:08 +0000 |
|---|---|---|
| committer | knu <knu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2014-03-21 12:59:08 +0000 |
| commit | cc4271c955606522e129b409cc34e706430d4486 (patch) | |
| tree | bab3f0f47fa715b4682ec9a482cd063ff4bb736d /configure.in | |
| parent | 27b9d591a52cbf4bf32ef0a0ee5700af9cf64fee (diff) | |
Fix a build problem with clang and --with-opt-dir.
* 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
Diffstat (limited to 'configure.in')
| -rw-r--r-- | configure.in | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/configure.in b/configure.in index e952cc7be1..55dea5123e 100644 --- a/configure.in +++ b/configure.in @@ -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> |