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Kenta Murata 4ba3a4491e
[ruby/bigdecimal] Optimize rb_float_convert_to_BigDecimal by using dtoa
This improve the conversion speed several times faster than before.

```
RUBYLIB= BUNDLER_ORIG_RUBYLIB= /home/mrkn/.rbenv/versions/3.0.0/bin/ruby -v -S benchmark-driver /home/mrkn/src/github.com/ruby/bigdecimal/benchmark/from_float.yml
ruby 3.0.0p0 (2020-12-25 revision 95aff21468) [x86_64-linux]
Calculating -------------------------------------
                     bigdecimal 3.0.0      master
              flt_e0         156.400k    783.356k i/s -    100.000k times in 0.639388s 0.127656s
            flt_ep10         158.640k    777.978k i/s -    100.000k times in 0.630359s 0.128538s
           flt_ep100         101.676k    504.259k i/s -    100.000k times in 0.983512s 0.198311s
            flt_em10         103.439k    726.339k i/s -    100.000k times in 0.966751s 0.137677s
           flt_em100          79.675k    651.446k i/s -    100.000k times in 1.255095s 0.153505s

Comparison:
                           flt_e0
              master:    783355.6 i/s
    bigdecimal 3.0.0:    156399.5 i/s - 5.01x  slower

                         flt_ep10
              master:    777977.6 i/s
    bigdecimal 3.0.0:    158639.7 i/s - 4.90x  slower

                        flt_ep100
              master:    504259.4 i/s
    bigdecimal 3.0.0:    101676.5 i/s - 4.96x  slower

                         flt_em10
              master:    726338.6 i/s
    bigdecimal 3.0.0:    103439.2 i/s - 7.02x  slower

                        flt_em100
              master:    651446.3 i/s
    bigdecimal 3.0.0:     79675.3 i/s - 8.18x  slower

```

https://github.com/ruby/bigdecimal/commit/5bdaedd530
https://github.com/ruby/bigdecimal/commit/9bfff57f90
https://github.com/ruby/bigdecimal/commit/d071a0abbb
2021-01-13 02:11:18 +09:00
.github Removed ENABLE_PATH_CHECK condition [ci skip] 2021-01-11 19:46:31 +09:00
basictest Raise RuntimeError for class variable overtaken in nonverbose mode 2020-06-18 08:21:29 -07:00
benchmark Improve performance some Float methods [Feature #17498] (#4018) 2021-01-01 18:39:07 -08:00
bin Promote erb to default gems 2020-08-21 20:18:44 +09:00
bootstraptest enable constant cache on ractors 2021-01-05 02:27:58 +09:00
ccan
coroutine Fix "Ruby is not properly fortified on armv7hl". 2020-12-08 23:37:42 +13:00
coverage
cygwin Merged recipes for the same target 2020-05-27 13:13:12 +09:00
defs gmake.mk: renamed BUNDLED_GEMS as bundled-gems 2020-12-02 17:04:33 +09:00
doc [DOC] Fix grammar: "is same as" -> "is the same as" 2021-01-05 15:13:53 +01:00
enc transcode-tblgen.rb: make silent a little when just -v 2020-12-29 17:45:19 +09:00
ext [ruby/bigdecimal] Optimize rb_float_convert_to_BigDecimal by using dtoa 2021-01-13 02:11:18 +09:00
gems Update bundled_gems 2021-01-07 20:11:02 +09:00
include Define printf qualifier prefix fallbacks 2021-01-11 21:13:45 +09:00
internal remove unused decl 2021-01-08 14:39:05 +09:00
lib [ruby/reline] Version 0.2.1 2021-01-13 01:12:54 +09:00
libexec Removed unused option on racc 2020-09-28 18:53:25 +09:00
man [DOC] Fix grammar: "is same as" -> "is the same as" 2021-01-05 15:13:53 +01:00
misc Promote webrick to bundled gems 2020-12-10 18:06:25 +09:00
missing dtoa.c: make thread-safe by using atomic CAS 2021-01-10 18:19:53 +09:00
sample sample/trick2015/kinaba/entry.rb: The constant "Data" has been removed 2020-12-24 01:51:46 +09:00
spec Remove "." and ".." from Dir.glob with FNM_DOTMATCH [Bug #17280] 2021-01-12 20:02:43 +09:00
template Fixed wrong configure option 2020-12-29 17:50:14 +09:00
test [ruby/bigdecimal] Use pre-allocated objects for special values 2021-01-13 01:58:23 +09:00
tool tool/sync_default_gems.rb: Prevent infinite loop due to unknown options 2021-01-12 09:57:04 +09:00
win32 ifchange: check the number of arguments 2021-01-04 15:54:09 +09:00
.dir-locals.el emacs mode addition 2020-02-06 11:46:51 +09:00
.document Improve performance some Float methods [Feature #17498] (#4018) 2021-01-01 18:39:07 -08:00
.editorconfig
.gdbinit Add T_MOVED to rp command of GDB 2020-12-04 08:43:32 -08:00
.gitattributes
.gitignore Ignore static-ruby [ci skip] 2020-11-24 08:38:06 +09:00
.rspec_parallel
.travis.yml .travis.yml: delete x86_64 2020-11-04 12:11:13 +09:00
BSDL [ruby/irb] Reformat LICENSE.txt [ci skip] 2020-02-02 03:22:51 +09:00
CONTRIBUTING.md
COPYING
COPYING.ja
GPL
KNOWNBUGS.rb Remove known use-after-poison bug 2020-10-03 00:45:06 +09:00
LEGAL Added did_you_mean entry because did_you_mean uses MIT license 2020-08-19 19:36:16 +09:00
NEWS.md NEWS: We have links now, and there is no changelog anymore [doc] 2021-01-02 21:54:00 -05:00
README.EXT
README.EXT.ja
README.ja.md Update labels of badges [ci skip] 2020-12-26 18:31:50 +09:00
README.md Update labels of badges [ci skip] 2020-12-26 18:31:50 +09:00
aclocal.m4 Merge pull request #2991 from shyouhei/ruby.h 2020-04-08 13:28:13 +09:00
addr2line.c addr2line.c: support debuglink by build_id 2020-12-11 14:08:33 +09:00
addr2line.h add #include guard hack 2020-04-13 16:06:00 +09:00
appveyor.yml Keep patched zlib files 2020-11-26 09:37:38 +09:00
array.c Document usage of ArithmeticSequence in Array#slice, and add to NEWS (#3952) 2020-12-21 09:32:30 +09:00
array.rb array.rb: Remove unnecessary phrase from rdoc 2020-11-12 16:59:59 +09:00
ast.c Unfreeze string-literal-only interpolated string-literal 2020-09-30 22:15:28 +09:00
ast.rb Fix RubyVM::AbstractSyntaxTree document 2020-06-24 15:17:53 +09:00
bignum.c [DOC] Fix grammar: "is same as" -> "is the same as" 2021-01-05 15:13:53 +01:00
builtin.c builtin_lookup: do not goto into a branch 2020-06-29 11:05:41 +09:00
builtin.h skip inlining cexpr! that are not attr! inline 2020-07-16 11:49:09 +09:00
class.c reset cache before iterating 2020-12-22 06:09:30 +09:00
common.mk dtoa.c: make thread-safe by using atomic CAS 2021-01-10 18:19:53 +09:00
compar.c Don't redefine #rb_intern over and over again 2020-10-21 12:45:18 +09:00
compile.c enable constant cache on ractors 2021-01-05 02:27:58 +09:00
complex.c Follow the NDEBUG given to the whole 2021-01-07 16:52:10 +09:00
configure.ac configure.ac: disable using __builtin_setjmp on ARM Android 2021-01-05 13:59:03 +09:00
constant.h add #include guard hack 2020-04-13 16:06:00 +09:00
cont.c [DOC] Fix grammar: "is same as" -> "is the same as" 2021-01-05 15:13:53 +01:00
debug.c USE_RUBY_DEBUG_LOG is not defined !devel build 2020-12-25 09:52:18 +09:00
debug_counter.c make RB_DEBUG_COUNTER_INC()_thread-safe 2020-12-17 03:43:59 +09:00
debug_counter.h enable constant cache on ractors 2021-01-05 02:27:58 +09:00
dir.c Remove "." and ".." from Dir.glob with FNM_DOTMATCH [Bug #17280] 2021-01-12 20:02:43 +09:00
dir.rb [DOC] more precise description of "**" in Dir.glob pattern [ci skip] 2020-10-27 08:55:10 +09:00
dln.c sed -i 's|ruby/impl|ruby/internal|' 2020-05-11 09:24:08 +09:00
dln.h dln.h: delete unused codes 2020-07-23 14:30:12 +09:00
dln_find.c dln_find_1: do not goto into a branch 2020-06-29 11:05:41 +09:00
dmydln.c
dmyenc.c
dmyext.c
encindex.h add #include guard hack 2020-04-13 16:06:00 +09:00
encoding.c No sync on ASCII/US_ASCCII/UTF-8 2020-12-17 03:44:23 +09:00
enum.c RDoc: Enhanced introduction for Enumerable (#4004) 2021-01-04 23:39:13 -05:00
enumerator.c Replace `Kernel.#open` with `URI.open` in doc 2021-01-08 07:31:27 -08:00
error.c Bypass check for warning_category on internal calls 2020-12-28 12:44:03 +09:00
eval.c [DOC] Fix grammar: "is same as" -> "is the same as" 2021-01-05 15:13:53 +01:00
eval_error.c Limit bactrace length from Exception#full_message 2020-12-27 20:50:15 +09:00
eval_intern.h Threads in a ractor will be killed with the ractor 2020-11-11 15:49:02 +09:00
eval_jump.c
file.c Revert "Removed deprecated Dir.exists? and File.exists?" 2020-12-02 19:11:01 +09:00
gc.c gc fix typo for the timer instruction for ARM64. 2021-01-09 22:37:27 +09:00
gc.h Introduce Ractor mechanism for parallel execution 2020-09-03 21:11:06 +09:00
gc.rb Add documentation about GC.compact 2020-12-17 13:26:53 -08:00
gem_prelude.rb Removed needless .rb 2020-12-02 13:32:43 +09:00
golf_prelude.rb
goruby.c goruby_options: do not goto into a branch 2020-06-29 11:05:41 +09:00
hash.c Adds RDoc summary of Hash methods (#4045) 2021-01-10 14:13:24 -06:00
hrtime.h
id_table.c Suppress unused-variable warning 2020-08-10 17:49:08 +09:00
id_table.h sed -i 's|ruby/impl|ruby/internal|' 2020-05-11 09:24:08 +09:00
inits.c Improve performance some Float methods [Feature #17498] (#4018) 2021-01-01 18:39:07 -08:00
insns.def enable constant cache on ractors 2021-01-05 02:27:58 +09:00
internal.h RHASH_EMPTY_P: convert into an inline function 2020-08-19 15:10:53 +09:00
io.c [DOC] Fix grammar: "is same as" -> "is the same as" 2021-01-05 15:13:53 +01:00
io.rb [Feature #16254] Use `Primitive.func` style 2020-06-19 18:46:55 +09:00
iseq.c remove invalidated cc 2021-01-06 14:57:48 +09:00
iseq.h check isolated Proc more strictly 2020-10-29 23:42:55 +09:00
kernel.rb [DOC] Use URI#read instead of URI.open for better compatibility 2021-01-12 22:12:02 +09:00
lex.c.blt
load.c Suppress a "clobbered" warning by gcc on macOS 2020-12-11 01:17:15 +09:00
loadpath.c
localeinit.c win32: Use UTF-8 as filesystem encoding [Feature #12654] 2020-12-20 18:34:04 +09:00
main.c stdlib.h is always included in include/ruby/defines.h 2021-01-05 01:06:33 +09:00
marshal.c Don't redefine #rb_intern over and over again 2020-10-21 12:45:18 +09:00
math.c [DOC] Fix grammar: "is same as" -> "is the same as" 2021-01-05 15:13:53 +01:00
memory_view.c [memory_view] Acquire VM lock while running exported_object_registry_free 2020-12-23 09:24:55 +09:00
method.h prohibi method call by defined_method in other racotrs 2020-09-25 20:37:38 +09:00
mini_builtin.c
miniinit.c
mjit.c enable constant cache on ractors 2021-01-05 02:27:58 +09:00
mjit.h enable constant cache on ractors 2021-01-05 02:27:58 +09:00
mjit_compile.c Prefer stdbool in vm_exec 2020-12-21 21:16:39 -08:00
mjit_worker.c Avoid hanging on --jit-wait after MJIT.pause 2021-01-03 00:05:38 -08:00
node.c Change NODE layout for pattern matching 2020-11-01 16:19:07 +09:00
node.h Change NODE layout for pattern matching 2020-11-01 16:19:07 +09:00
numeric.c Improve performance some Float methods [Feature #17498] (#4018) 2021-01-01 18:39:07 -08:00
numeric.rb Improve performance some Float methods [Feature #17498] (#4018) 2021-01-01 18:39:07 -08:00
object.c [DOC] Fix typos 2020-12-24 23:09:51 +01:00
pack.c RARRAY_AREF: convert into an inline function 2020-08-15 12:09:26 +09:00
pack.rb [DOC] Fix grammar: "is same as" -> "is the same as" 2021-01-05 15:13:53 +01:00
parse.y parse.y: handle "duplicated argument name" appropriately on ripper.y 2021-01-09 13:33:33 +09:00
prelude.rb Thread.exclusive: delete 2020-08-31 18:08:57 +09:00
probes.d remove method__cache__clear 2020-12-24 01:59:36 +09:00
probes_helper.h
proc.c [DOC] Update Proc.new without a block [ci skip] 2021-01-04 15:54:09 +09:00
process.c Updated access to Process::Status attributes 2020-12-24 23:35:18 +09:00
ractor.c expose some C-APIs for ractor 2021-01-06 16:03:09 +09:00
ractor.rb Fix ractor docs (#4048) [doc] 2021-01-10 15:39:37 -05:00
ractor_core.h shareable_constant_value: experimental_copy 2020-12-24 14:28:47 +09:00
random.c Remove possibility of using same seeds 2021-01-10 21:29:07 +09:00
range.c Use public allocators for creating new T_OBJECT objects 2020-10-28 18:35:22 -07:00
rational.c Follow the NDEBUG given to the whole 2021-01-07 16:52:10 +09:00
re.c [DOC] Fix grammar: "is same as" -> "is the same as" 2021-01-05 15:13:53 +01:00
regcomp.c Right size literal regular expression buffers on compile 2020-12-10 18:15:26 +09:00
regenc.c
regenc.h
regerror.c
regexec.c
regint.h Enable arm64 optimizations that exist for power/x86 (#3393) 2020-08-14 02:15:54 +09:00
regparse.c Do not reduce quantifiers if it affects which text will be matched 2020-12-02 18:42:02 +01:00
regparse.h
regsyntax.c
ruby-runner.c sed -i 's|ruby/impl|ruby/internal|' 2020-05-11 09:24:08 +09:00
ruby.c Ignore failure on unsupported fcntl to drop non-blocking mode 2020-12-26 09:45:06 +09:00
ruby_assert.h Introduce Ractor mechanism for parallel execution 2020-09-03 21:11:06 +09:00
ruby_atomic.h Expose atomic operation macros with RUBY prefix 2020-12-24 11:43:21 +09:00
rubystub.c
scheduler.c Add support for non-blocking `Process.wait`. 2020-12-09 08:55:35 +13:00
signal.c Signal handler type should be void 2020-12-12 17:02:42 +09:00
siphash.c Enable arm64 optimizations that exist for power/x86 (#3393) 2020-08-14 02:15:54 +09:00
siphash.h
sparc.c
sprintf.c sprintf.c: Removed conflicting definition 2020-09-28 12:51:53 +09:00
st.c [DOC] Fixed st_udpate comment [ci skip] 2020-11-30 12:18:21 +09:00
strftime.c rb_strftime_with_timespec: do not goto into a branch 2020-06-29 11:05:41 +09:00
string.c Minor grammar fix in String#chomp documentation 2020-12-30 01:25:00 -05:00
struct.c RHASH_TBL: is now ext-only 2020-08-19 15:10:53 +09:00
symbol.c sync ruby_global_symbols 2020-09-18 14:17:49 +09:00
symbol.h include/ruby/backward/2/r_cast.h: deprecate 2020-08-27 15:03:36 +09:00
thread.c introduce rb_ractor_atfork() 2020-12-24 04:30:50 +09:00
thread_pthread.c introduce USE_VM_CLOCK for windows. 2020-11-11 15:49:02 +09:00
thread_pthread.h fix public interface 2020-11-18 03:52:41 +09:00
thread_sync.c Proposed method for dealing with stack locals which have non-local lifetime. 2020-12-05 11:38:56 +13:00
thread_win32.c fix public interface 2020-11-18 03:52:41 +09:00
thread_win32.h fix public interface 2020-11-18 03:52:41 +09:00
time.c Convert time component strings to integers more strictly 2021-01-12 17:24:43 +09:00
timev.h
timev.rb [DOC] Fix grammar: "is same as" -> "is the same as" 2021-01-05 15:13:53 +01:00
trace_point.rb [Feature #16513] TracePoint#inspect returns "... file:line" (#3391) 2020-08-06 11:56:24 +09:00
transcode.c fix result of example [ci skip] 2021-01-06 21:58:34 +09:00
transcode_data.h add #include guard hack 2020-04-13 16:06:00 +09:00
transient_heap.c cancel theap on multi-ractors 2020-12-07 08:28:36 +09:00
transient_heap.h cancel theap on multi-ractors 2020-12-07 08:28:36 +09:00
util.c dtoa.c: make thread-safe by using atomic CAS 2021-01-10 18:19:53 +09:00
variable.c Introduce Ractor::IsolationError 2020-12-21 22:29:05 +09:00
variable.h fix ivar with shareable objects issue 2020-12-12 06:19:18 +09:00
version.c
version.h * 2021-01-13 [ci skip] 2021-01-13 01:13:31 +09:00
vm.c Stop managing valid class serials 2020-12-29 23:01:11 -08:00
vm_args.c remove unused decl 2021-01-08 14:39:05 +09:00
vm_backtrace.c Ignore <internal: entries from core library methods for Kernel#warn(message, uplevel: n) 2020-10-26 08:47:33 +01:00
vm_callinfo.h remove invalidated cc 2021-01-06 14:57:48 +09:00
vm_core.h expose some C-APIs for ractor 2021-01-06 16:03:09 +09:00
vm_debug.h support multiple filters by RUBY_DEBUG_LOG_FILTER 2020-08-02 04:24:47 +09:00
vm_dump.c vm debug: dump registers on ARM too. (#3900) 2020-12-16 15:32:11 +09:00
vm_eval.c [DOC] Fix grammar: "is same as" -> "is the same as" 2021-01-05 15:13:53 +01:00
vm_exec.c Enable arm64 optimizations that exist for power/x86 (#3393) 2020-08-14 02:15:54 +09:00
vm_exec.h RUBY_CONST_ASSERT: use STATIC_ASSERT instead 2020-07-10 12:23:41 +09:00
vm_insnhelper.c simplify assertion 2021-01-07 23:44:25 +09:00
vm_insnhelper.h Fixed leaked global symbols 2020-12-26 09:39:53 +09:00
vm_method.c [DOC] Fix typos in vm_method.c 2020-12-26 22:50:55 +01:00
vm_opts.h Remove obsoleted opt_call_c_function insn (#3232) 2020-06-17 09:16:01 -07:00
vm_sync.c Fixed leaked global symbols 2020-12-26 09:39:53 +09:00
vm_sync.h Fixed leaked global symbols 2020-12-26 09:39:53 +09:00
vm_trace.c separate rb_ractor_pub from rb_ractor_t 2020-12-22 00:03:00 +09:00
vsnprintf.c [win32] suppress false warning by mingw gcc 2020-03-04 23:13:18 +09:00
warning.rb Use category: :deprecated in warnings that are related to deprecation 2020-12-18 09:54:11 -08:00

README.md

Build Status Build status Actions Status: macOS Actions Status: MinGW Actions Status: MJIT Actions Status: Ubuntu Actions Status: Windows

What's Ruby

Ruby is an interpreted object-oriented programming language often used for web development. It also offers many scripting features to process plain text and serialized files, or manage system tasks. It is simple, straightforward, and extensible.

Features of Ruby

  • Simple Syntax
  • Normal Object-oriented Features (e.g. class, method calls)
  • Advanced Object-oriented Features (e.g. mix-in, singleton-method)
  • Operator Overloading
  • Exception Handling
  • Iterators and Closures
  • Garbage Collection
  • Dynamic Loading of Object Files (on some architectures)
  • Highly Portable (works on many Unix-like/POSIX compatible platforms as well as Windows, macOS, etc.) cf. https://github.com/ruby/ruby/blob/master/doc/contributing.rdoc#label-Platform+Maintainers

How to get Ruby

For a complete list of ways to install Ruby, including using third-party tools like rvm, see:

https://www.ruby-lang.org/en/downloads/

Git

The mirror of the Ruby source tree can be checked out with the following command:

$ git clone https://github.com/ruby/ruby.git

There are some other branches under development. Try the following command to see the list of branches:

$ git ls-remote https://github.com/ruby/ruby.git

You may also want to use https://git.ruby-lang.org/ruby.git (actual master of Ruby source) if you are a committer.

Subversion

Stable branches for older Ruby versions can be checked out with the following command:

$ svn co https://svn.ruby-lang.org/repos/ruby/branches/ruby_2_6/ ruby

Try the following command to see the list of branches:

$ svn ls https://svn.ruby-lang.org/repos/ruby/branches/

Ruby home page

https://www.ruby-lang.org/

Mailing list

There is a mailing list to discuss Ruby. To subscribe to this list, please send the following phrase:

subscribe

in the mail body (not subject) to the address ruby-talk-request@ruby-lang.org.

How to compile and install

  1. If you want to use Microsoft Visual C++ to compile Ruby, read win32/README.win32 instead of this document.

  2. If ./configure does not exist or is older than configure.ac, run autoconf to (re)generate configure.

  3. Run ./configure, which will generate config.h and Makefile.

    Some C compiler flags may be added by default depending on your environment. Specify optflags=.. and warnflags=.. as necessary to override them.

  4. Edit include/ruby/defines.h if you need. Usually this step will not be needed.

  5. Remove comment mark(#) before the module names from ext/Setup (or add module names if not present), if you want to link modules statically.

    If you don't want to compile non static extension modules (probably on architectures which do not allow dynamic loading), remove comment mark from the line "#option nodynamic" in ext/Setup.

    Usually this step will not be needed.

  6. Run make.

    • On Mac, set RUBY_CODESIGN environment variable with a signing identity. It uses the identity to sign ruby binary. See also codesign(1).
  7. Optionally, run 'make check' to check whether the compiled Ruby interpreter works well. If you see the message "check succeeded", your Ruby works as it should (hopefully).

  8. Run 'make install'.

    This command will create the following directories and install files into them.

    • ${DESTDIR}${prefix}/bin
    • ${DESTDIR}${prefix}/include/ruby-${MAJOR}.${MINOR}.${TEENY}
    • ${DESTDIR}${prefix}/include/ruby-${MAJOR}.${MINOR}.${TEENY}/${PLATFORM}
    • ${DESTDIR}${prefix}/lib
    • ${DESTDIR}${prefix}/lib/ruby
    • ${DESTDIR}${prefix}/lib/ruby/${MAJOR}.${MINOR}.${TEENY}
    • ${DESTDIR}${prefix}/lib/ruby/${MAJOR}.${MINOR}.${TEENY}/${PLATFORM}
    • ${DESTDIR}${prefix}/lib/ruby/site_ruby
    • ${DESTDIR}${prefix}/lib/ruby/site_ruby/${MAJOR}.${MINOR}.${TEENY}
    • ${DESTDIR}${prefix}/lib/ruby/site_ruby/${MAJOR}.${MINOR}.${TEENY}/${PLATFORM}
    • ${DESTDIR}${prefix}/lib/ruby/vendor_ruby
    • ${DESTDIR}${prefix}/lib/ruby/vendor_ruby/${MAJOR}.${MINOR}.${TEENY}
    • ${DESTDIR}${prefix}/lib/ruby/vendor_ruby/${MAJOR}.${MINOR}.${TEENY}/${PLATFORM}
    • ${DESTDIR}${prefix}/lib/ruby/gems/${MAJOR}.${MINOR}.${TEENY}
    • ${DESTDIR}${prefix}/share/man/man1
    • ${DESTDIR}${prefix}/share/ri/${MAJOR}.${MINOR}.${TEENY}/system

    If Ruby's API version is 'x.y.z', the ${MAJOR} is 'x', the ${MINOR} is 'y', and the ${TEENY} is 'z'.

    NOTE: teeny of the API version may be different from one of Ruby's program version

    You may have to be a super user to install Ruby.

If you fail to compile Ruby, please send the detailed error report with the error log and machine/OS type, to help others.

Some extension libraries may not get compiled because of lack of necessary external libraries and/or headers, then you will need to run 'make distclean-ext' to remove old configuration after installing them in such case.

Copying

See the file COPYING.

Feedback

Questions about the Ruby language can be asked on the Ruby-Talk mailing list (https://www.ruby-lang.org/en/community/mailing-lists) or on websites like (https://stackoverflow.com).

Bugs should be reported at https://bugs.ruby-lang.org. Read HowToReport for more information.

Contributing

See the file CONTRIBUTING.md

The Author

Ruby was originally designed and developed by Yukihiro Matsumoto (Matz) in 1995.

matz@ruby-lang.org