add tests for c and rubyext

contrib/c/test.c

···
+#include <curl/curl.h>
+
+int main() {
+    CURL *curl;
+    curl = curl_easy_init();
+    return 0;
+}

contrib/rubyext/.gitignore

···
+*.so

contrib/rubyext/Makefile

···
+
+SHELL = /bin/sh
+
+# V=0 quiet, V=1 verbose.  other values don't work.
+V = 0
+V0 = $(V:0=)
+Q1 = $(V:1=)
+Q = $(Q1:0=@)
+ECHO1 = $(V:1=@ :)
+ECHO = $(ECHO1:0=@ echo)
+NULLCMD = :
+
+#### Start of system configuration section. ####
+
+srcdir = .
+topdir = /home/vladh/.rvm/rubies/ruby-3.3.9/include/ruby-3.3.0
+hdrdir = $(topdir)
+arch_hdrdir = /home/vladh/.rvm/rubies/ruby-3.3.9/include/ruby-3.3.0/x86_64-linux
+PATH_SEPARATOR = :
+VPATH = $(srcdir):$(arch_hdrdir)/ruby:$(hdrdir)/ruby
+prefix = $(DESTDIR)/home/vladh/.rvm/rubies/ruby-3.3.9
+rubysitearchprefix = $(rubylibprefix)/$(sitearch)
+rubyarchprefix = $(rubylibprefix)/$(arch)
+rubylibprefix = $(libdir)/$(RUBY_BASE_NAME)
+exec_prefix = $(prefix)
+vendorarchhdrdir = $(vendorhdrdir)/$(sitearch)
+sitearchhdrdir = $(sitehdrdir)/$(sitearch)
+rubyarchhdrdir = $(rubyhdrdir)/$(arch)
+vendorhdrdir = $(rubyhdrdir)/vendor_ruby
+sitehdrdir = $(rubyhdrdir)/site_ruby
+rubyhdrdir = $(includedir)/$(RUBY_VERSION_NAME)
+vendorarchdir = $(vendorlibdir)/$(sitearch)
+vendorlibdir = $(vendordir)/$(ruby_version)
+vendordir = $(rubylibprefix)/vendor_ruby
+sitearchdir = $(sitelibdir)/$(sitearch)
+sitelibdir = $(sitedir)/$(ruby_version)
+sitedir = $(rubylibprefix)/site_ruby
+rubyarchdir = $(rubylibdir)/$(arch)
+rubylibdir = $(rubylibprefix)/$(ruby_version)
+sitearchincludedir = $(includedir)/$(sitearch)
+archincludedir = $(includedir)/$(arch)
+sitearchlibdir = $(libdir)/$(sitearch)
+archlibdir = $(libdir)/$(arch)
+ridir = $(datarootdir)/$(RI_BASE_NAME)
+mandir = $(datarootdir)/man
+localedir = $(datarootdir)/locale
+libdir = $(exec_prefix)/lib
+psdir = $(docdir)
+pdfdir = $(docdir)
+dvidir = $(docdir)
+htmldir = $(docdir)
+infodir = $(datarootdir)/info
+docdir = $(datarootdir)/doc/$(PACKAGE)
+oldincludedir = $(DESTDIR)/usr/include
+includedir = $(prefix)/include
+runstatedir = $(localstatedir)/run
+localstatedir = $(prefix)/var
+sharedstatedir = $(prefix)/com
+sysconfdir = $(prefix)/etc
+datadir = $(datarootdir)
+datarootdir = $(prefix)/share
+libexecdir = $(exec_prefix)/libexec
+sbindir = $(exec_prefix)/sbin
+bindir = $(exec_prefix)/bin
+archdir = $(rubyarchdir)
+
+
+CC_WRAPPER = 
+CC = gcc
+CXX = g++
+LIBRUBY = $(LIBRUBY_SO)
+LIBRUBY_A = lib$(RUBY_SO_NAME)-static.a
+LIBRUBYARG_SHARED = -Wl,-rpath,$(libdir) -L$(libdir) -l$(RUBY_SO_NAME)
+LIBRUBYARG_STATIC = -Wl,-rpath,$(libdir) -L$(libdir) -l$(RUBY_SO_NAME)-static $(MAINLIBS)
+empty =
+OUTFLAG = -o $(empty)
+COUTFLAG = -o $(empty)
+CSRCFLAG = $(empty)
+
+RUBY_EXTCONF_H = 
+cflags   = $(optflags) $(debugflags) $(warnflags)
+cxxflags = 
+optflags = -O3 -fno-fast-math
+debugflags = -ggdb3
+warnflags = -Wall -Wextra -Wdeprecated-declarations -Wdiv-by-zero -Wduplicated-cond -Wimplicit-function-declaration -Wimplicit-int -Wpointer-arith -Wwrite-strings -Wold-style-definition -Wimplicit-fallthrough=0 -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 -Wmisleading-indentation -Wundef
+cppflags = 
+CCDLFLAGS = -fPIC
+CFLAGS   = $(CCDLFLAGS) $(cflags)  -fPIC $(ARCH_FLAG)
+INCFLAGS = -I. -I$(arch_hdrdir) -I$(hdrdir)/ruby/backward -I$(hdrdir) -I$(srcdir)
+DEFS     = 
+CPPFLAGS =   $(DEFS) $(cppflags)
+CXXFLAGS = $(CCDLFLAGS)  $(ARCH_FLAG)
+ldflags  = -L. -fstack-protector-strong -rdynamic -Wl,-export-dynamic -Wl,--no-as-needed
+dldflags = -Wl,--compress-debug-sections=zlib 
+ARCH_FLAG = 
+DLDFLAGS = $(ldflags) $(dldflags) $(ARCH_FLAG)
+LDSHARED = $(CC) -shared
+LDSHAREDXX = $(CXX) -shared
+AR = gcc-ar
+EXEEXT = 
+
+RUBY_INSTALL_NAME = $(RUBY_BASE_NAME)
+RUBY_SO_NAME = ruby
+RUBYW_INSTALL_NAME = 
+RUBY_VERSION_NAME = $(RUBY_BASE_NAME)-$(ruby_version)
+RUBYW_BASE_NAME = rubyw
+RUBY_BASE_NAME = ruby
+
+arch = x86_64-linux
+sitearch = $(arch)
+ruby_version = 3.3.0
+ruby = $(bindir)/$(RUBY_BASE_NAME)
+RUBY = $(ruby)
+BUILTRUBY = $(bindir)/$(RUBY_BASE_NAME)
+ruby_headers = $(hdrdir)/ruby.h $(hdrdir)/ruby/backward.h $(hdrdir)/ruby/ruby.h $(hdrdir)/ruby/defines.h $(hdrdir)/ruby/missing.h $(hdrdir)/ruby/intern.h $(hdrdir)/ruby/st.h $(hdrdir)/ruby/subst.h $(arch_hdrdir)/ruby/config.h
+
+RM = rm -f
+RM_RF = rm -fr
+RMDIRS = rmdir --ignore-fail-on-non-empty -p
+MAKEDIRS = /usr/bin/mkdir -p
+INSTALL = /usr/bin/install -c
+INSTALL_PROG = $(INSTALL) -m 0755
+INSTALL_DATA = $(INSTALL) -m 644
+COPY = cp
+TOUCH = exit >
+
+#### End of system configuration section. ####
+
+preload = 
+libpath = . $(libdir)
+LIBPATH =  -L. -L$(libdir) -Wl,-rpath,$(libdir)
+DEFFILE = 
+
+CLEANFILES = mkmf.log
+DISTCLEANFILES = 
+DISTCLEANDIRS = 
+
+extout = 
+extout_prefix = 
+target_prefix = 
+LOCAL_LIBS = 
+LIBS = $(LIBRUBYARG_SHARED)  -lm -lpthread  -lc
+ORIG_SRCS = my_c_ext.c
+SRCS = $(ORIG_SRCS) 
+OBJS = my_c_ext.o
+HDRS = 
+LOCAL_HDRS = 
+TARGET = my_c_ext
+TARGET_NAME = my_c_ext
+TARGET_ENTRY = Init_$(TARGET_NAME)
+DLLIB = $(TARGET).so
+EXTSTATIC = 
+STATIC_LIB = 
+
+TIMESTAMP_DIR = .
+BINDIR        = $(bindir)
+RUBYCOMMONDIR = $(sitedir)$(target_prefix)
+RUBYLIBDIR    = $(sitelibdir)$(target_prefix)
+RUBYARCHDIR   = $(sitearchdir)$(target_prefix)
+HDRDIR        = $(sitehdrdir)$(target_prefix)
+ARCHHDRDIR    = $(sitearchhdrdir)$(target_prefix)
+TARGET_SO_DIR =
+TARGET_SO     = $(TARGET_SO_DIR)$(DLLIB)
+CLEANLIBS     = $(TARGET_SO) false
+CLEANOBJS     = $(OBJS) *.bak
+TARGET_SO_DIR_TIMESTAMP = $(TIMESTAMP_DIR)/.sitearchdir.time
+
+all:    $(DLLIB)
+static: $(STATIC_LIB)
+.PHONY: all install static install-so install-rb
+.PHONY: clean clean-so clean-static clean-rb
+
+clean-static::
+clean-rb-default::
+clean-rb::
+clean-so::
+clean: clean-so clean-static clean-rb-default clean-rb
+		-$(Q)$(RM_RF) $(CLEANLIBS) $(CLEANOBJS) $(CLEANFILES) .*.time
+
+distclean-rb-default::
+distclean-rb::
+distclean-so::
+distclean-static::
+distclean: clean distclean-so distclean-static distclean-rb-default distclean-rb
+		-$(Q)$(RM) Makefile $(RUBY_EXTCONF_H) conftest.* mkmf.log
+		-$(Q)$(RM) core ruby$(EXEEXT) *~ $(DISTCLEANFILES)
+		-$(Q)$(RMDIRS) $(DISTCLEANDIRS) 2> /dev/null || true
+
+realclean: distclean
+install: install-so install-rb
+
+install-so: $(DLLIB) $(TARGET_SO_DIR_TIMESTAMP)
+	$(INSTALL_PROG) $(DLLIB) $(RUBYARCHDIR)
+clean-static::
+	-$(Q)$(RM) $(STATIC_LIB)
+install-rb: pre-install-rb do-install-rb install-rb-default
+install-rb-default: pre-install-rb-default do-install-rb-default
+pre-install-rb: Makefile
+pre-install-rb-default: Makefile
+do-install-rb:
+do-install-rb-default:
+pre-install-rb-default:
+	@$(NULLCMD)
+$(TARGET_SO_DIR_TIMESTAMP):
+	$(Q) $(MAKEDIRS) $(@D) $(RUBYARCHDIR)
+	$(Q) $(TOUCH) $@
+
+site-install: site-install-so site-install-rb
+site-install-so: install-so
+site-install-rb: install-rb
+
+.SUFFIXES: .c .m .cc .mm .cxx .cpp .o .S
+
+.cc.o:
+	$(ECHO) compiling $(<)
+	$(Q) $(CXX) $(INCFLAGS) $(CPPFLAGS) $(CXXFLAGS) $(COUTFLAG)$@ -c $(CSRCFLAG)$<
+
+.cc.S:
+	$(ECHO) translating $(<)
+	$(Q) $(CXX) $(INCFLAGS) $(CPPFLAGS) $(CXXFLAGS) $(COUTFLAG)$@ -S $(CSRCFLAG)$<
+
+.mm.o:
+	$(ECHO) compiling $(<)
+	$(Q) $(CXX) $(INCFLAGS) $(CPPFLAGS) $(CXXFLAGS) $(COUTFLAG)$@ -c $(CSRCFLAG)$<
+
+.mm.S:
+	$(ECHO) translating $(<)
+	$(Q) $(CXX) $(INCFLAGS) $(CPPFLAGS) $(CXXFLAGS) $(COUTFLAG)$@ -S $(CSRCFLAG)$<
+
+.cxx.o:
+	$(ECHO) compiling $(<)
+	$(Q) $(CXX) $(INCFLAGS) $(CPPFLAGS) $(CXXFLAGS) $(COUTFLAG)$@ -c $(CSRCFLAG)$<
+
+.cxx.S:
+	$(ECHO) translating $(<)
+	$(Q) $(CXX) $(INCFLAGS) $(CPPFLAGS) $(CXXFLAGS) $(COUTFLAG)$@ -S $(CSRCFLAG)$<
+
+.cpp.o:
+	$(ECHO) compiling $(<)
+	$(Q) $(CXX) $(INCFLAGS) $(CPPFLAGS) $(CXXFLAGS) $(COUTFLAG)$@ -c $(CSRCFLAG)$<
+
+.cpp.S:
+	$(ECHO) translating $(<)
+	$(Q) $(CXX) $(INCFLAGS) $(CPPFLAGS) $(CXXFLAGS) $(COUTFLAG)$@ -S $(CSRCFLAG)$<
+
+.c.o:
+	$(ECHO) compiling $(<)
+	$(Q) $(CC) $(INCFLAGS) $(CPPFLAGS) $(CFLAGS) $(COUTFLAG)$@ -c $(CSRCFLAG)$<
+
+.c.S:
+	$(ECHO) translating $(<)
+	$(Q) $(CC) $(INCFLAGS) $(CPPFLAGS) $(CFLAGS) $(COUTFLAG)$@ -S $(CSRCFLAG)$<
+
+.m.o:
+	$(ECHO) compiling $(<)
+	$(Q) $(CC) $(INCFLAGS) $(CPPFLAGS) $(CFLAGS) $(COUTFLAG)$@ -c $(CSRCFLAG)$<
+
+.m.S:
+	$(ECHO) translating $(<)
+	$(Q) $(CC) $(INCFLAGS) $(CPPFLAGS) $(CFLAGS) $(COUTFLAG)$@ -S $(CSRCFLAG)$<
+
+$(TARGET_SO): $(OBJS) Makefile
+	$(ECHO) linking shared-object $(DLLIB)
+	-$(Q)$(RM) $(@)
+	$(Q) $(LDSHARED) -o $@ $(OBJS) $(LIBPATH) $(DLDFLAGS) $(LOCAL_LIBS) $(LIBS)
+
+
+
+$(OBJS): $(HDRS) $(ruby_headers)

contrib/rubyext/extconf.rb

···
+require "mkmf"
+
+create_makefile "my_c_ext"

contrib/rubyext/my_c_ext.c

···
+// https://blog.peterzhu.ca/ruby-c-ext-part-1/
+
+#include <signal.h>
+
+#include <ruby/ruby.h>
+
+static ID id_puts;
+
+static void kernel_puts(VALUE val)
+{
+    rb_funcall(rb_mKernel, id_puts, 1, val);
+}
+
+static VALUE foo(VALUE self)
+{
+    raise(SIGINT);
+    kernel_puts(self);
+
+    return Qnil;
+}
+
+void Init_methods(void)
+{
+    id_puts = rb_intern("puts");
+
+    rb_define_method(rb_cObject, "foo", foo, 0);
+}
+
+void Init_my_c_ext(void)
+{
+    ID id_puts = rb_intern("puts");
+
+    raise(SIGINT);
+    VALUE hello_world_str = rb_str_new_cstr("Hello world!");
+    rb_funcall(rb_mKernel, id_puts, 1, hello_world_str);
+}

contrib/rubyext/test.rb

···
+#!/usr/bin/env ruby
+require_relative "my_c_ext"