From 89c5d5a64e12cea23b230913b79c3d499bf30b12 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?=E5=8D=9C=E9=83=A8=E6=98=8C=E5=B9=B3?= Date: Mon, 9 Sep 2019 13:19:33 +0900 Subject: add minimaist C++ check This is a test extension so we basically want test failures rather than a configure breakage but if there is no C++ compiler, we need no test at all because there will be no chance for the tested header file to be used later. This makes it possible to build the ruby binary without any C++ compiler installed in a build environment. --- ext/-test-/cxxanyargs/extconf.rb | 43 ++++++++++++++++++++++++++++++++++++++-- 1 file changed, 41 insertions(+), 2 deletions(-) (limited to 'ext') diff --git a/ext/-test-/cxxanyargs/extconf.rb b/ext/-test-/cxxanyargs/extconf.rb index 6241e836aa..0c5344a1e5 100644 --- a/ext/-test-/cxxanyargs/extconf.rb +++ b/ext/-test-/cxxanyargs/extconf.rb @@ -1,2 +1,41 @@ -# frozen_string_literal: true -create_makefile("-test-/cxxanyargs") +# frozen_string_literal: false + +cfg = RbConfig::CONFIG.merge( + 'hdrdir' => $hdrdir.quote, + 'src' => "#{CONFTEST_C}", + 'arch_hdrdir' => $arch_hdrdir.quote, + 'top_srcdir' => $top_srcdir.quote, + 'CC' => RbConfig::CONFIG['CXX'], + 'CFLAGS' => RbConfig::CONFIG['CXXFLAGS'], + 'INCFLAGS' => "#$INCFLAGS", + 'CPPFLAGS' => "#$CPPFLAGS", + 'ARCH_FLAG' => "#$ARCH_FLAG", + 'LDFLAGS' => "#$LDFLAGS", + 'LOCAL_LIBS' => "#$LOCAL_LIBS", + 'LIBS' => "#$LIBS" +) +cxx = RbConfig::expand(TRY_LINK.dup, cfg) +src = create_tmpsrc(<<~'begin') do |x| + #include "ruby/config.h" + + namespace { + typedef int conftest[SIZEOF_LONG == sizeof(long) ? 1 : -1]; + typedef int conftest[SIZEOF_VOIDP == sizeof(void*) ? 1 : -1]; + } + + int + main(int argc, const char** argv) + { + return !!argv[argc]; + } +begin + # We are wiping ruby.h from the source because that header file is the + # subject we are going to test in this extension library. + x.sub! %<#include "ruby.h">, '' +end + +begin + create_makefile("-test-/cxxanyargs") if xsystem(cxx) +ensure + log_src src +end -- cgit v1.2.3