[ruby-core:108862] [Ruby master Bug#18808] Cannot compile ruby 3.1.2 on powerpc64le-linux without disabling the jit features

Issue #18808 has been updated by michals (Michal Such叩nek).


diff --git a/tool/transform_mjit_header.rb b/tool/transform_mjit_header.rb
index 8867c556f0..63a072573a 100644
--- a/tool/transform_mjit_header.rb
+++ b/tool/transform_mjit_header.rb
@@ -194,10 +194,10 @@ def self.conflicting_types?(code, cc, cflags)
 
   def self.with_code(code)
     # for `system_header` pragma which can't be in the main file.
-    Tempfile.open(['', '.h'], mode: File::BINARY) do |f|
+    File.open('/tmp/ruby-testheader.h', mode: File::BINARY|File::CREAT|File::RDWR|File::TRUNC) do |f|
       f.puts code
       f.close
-      Tempfile.open(['', '.c'], mode: File::BINARY) do |c|
+      File.open('/tmp/ruby-testprogram.c', mode: File::BINARY|File::CREAT|File::RDWR|File::TRUNC) do |c|
         c.puts <<SRC
 #include "#{f.path}"
 SRC

./miniruby -I./lib -I. -I.ext/common  ./tool/transform_mjit_header.rb "gcc -std=gnu99 -O3 -fno-fast-math -ggdb3 -Wall -Wextra -Werror=deprecated-declarations -Werror=div-by-zero -Werror=implicit-function-declaration -Werror=implicit-int -Werror=pointer-arith -Werror=write-strings -Werror=old-style-definition -Wmissing-noreturn -Wno-cast-function-type -Wno-constant-logical-operand -Wno-long-long -Wno-missing-field-initializers -Wno-overlength-strings -Wno-packed-bitfield-compat -Wno-parentheses-equality -Wno-self-assign -Wno-tautological-compare -Wno-unused-parameter -Wno-unused-value -Wsuggest-attribute=format -Wsuggest-attribute=noreturn -Wunused-variable   -w" rb_mjit_header.h .ext/include/powerpc64le-linux/rb_mjit_min_header-3.2.0.h
error in final header file:
In file included from /tmp/ruby-testprogram.c:1:0:
/tmp/ruby-testheader.h:16626:1: error: multiple storage classes in declaration specifiers
 __attribute__ ((__visibility__("default"))) extern
 ^
compilation terminated due to -Wfatal-errors.
uncommon.mk:251: recipe for target '.ext/include/powerpc64le-linux/rb_mjit_min_header-3.2.0.h' failed
make: *** [.ext/include/powerpc64le-linux/rb_mjit_min_header-3.2.0.h] Error 1


----------------------------------------
Bug #18808: Cannot compile ruby 3.1.2 on powerpc64le-linux without disabling the jit features
https://bugs.ruby-lang.org/issues/18808#change-97944

* Author: npn (John Davis)
* Status: Open
* Priority: Normal
* Backport: 2.7: UNKNOWN, 3.0: UNKNOWN, 3.1: UNKNOWN
----------------------------------------
The system I am trying to compile on is a ppc64el system running RedHat 7 (3.10.0-1160.62.1.el7.ppc64le).  I can successfully compile on a x86_64 system running the same version RedHat 7 (3.10.0-1160.62.1.el7.x86_64)

When I configure with the following,  make completes fine,  but if I remove the `--disable-jit-support` it fails with the following error.


     ./configure --enable-shared --enable-load-relative  --disable-install-doc --prefix=$RUBY_PREFIX --exec-prefix=$RUBY_PREFIX/rh_ppc --disable-jit-support

    building rb_mjit_header.h
    rb_mjit_header.h updated
    building .ext/include/powerpc64le-linux/rb_mjit_min_header-3.1.2.h
    error in final header file:
    In file included from /tmp/20220525-12786-q2ndz2.c:1:0:
    /tmp/20220525-12786-vf3xbh.h:16627:1: error: multiple storage classes in declaration specifiers
     __attribute__ ((__visibility__("default"))) extern
     ^
    compilation terminated due to -Wfatal-errors.
    make: *** [.ext/include/powerpc64le-linux/rb_mjit_min_header-3.1.2.h] Error 1



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