Top Level Namespace

Relationships & Source Files
Namespace Children
Modules: `MakeMakefile`
Classes: `Array`, `String`
Super Chains via Extension / Inclusion / Inheritance
Instance Chain: self, `MakeMakefile`

Constant Summary

ASSEMBLE_C =

Command which will translate C files to assembler sources in the generated Makefile

# File 'lib/mkmf.rb', line 2689
```
config_string('ASSEMBLE_C') || COMPILE_C.sub(/(?<=\s)-c(?=\s)/, '-S')
```
ASSEMBLE_CXX =

Command which will translate C++ files to assembler sources in the generated Makefile

# File 'lib/mkmf.rb', line 2694
```
config_string('ASSEMBLE_CXX') || COMPILE_CXX.sub(/(?<=\s)-c(?=\s)/, '-S')
```

CLEANINGS =

Makefile rules that will clean the extension build directory

# File 'lib/mkmf.rb', line 2738

"
clean-static::
clean-rb-default::
clean-rb::
clean-so::
clean: clean-so clean-static clean-rb-default clean-rb
\t\t-$(Q)$(RM) $(CLEANLIBS#{sep}) $(CLEANOBJS#{sep}) $(CLEANFILES#{sep}) .*.time

distclean-rb-default::
distclean-rb::
distclean-so::
distclean-static::
distclean: clean distclean-so distclean-static distclean-rb-default distclean-rb
\t\t-$(Q)$(RM) Makefile $(RUBY_EXTCONF_H) #{CONFTEST}.* mkmf.log
\t\t-$(Q)$(RM) core ruby$(EXEEXT) *~ $(DISTCLEANFILES#{sep})
\t\t-$(Q)$(RMDIRS) $(DISTCLEANDIRS#{sep})#{$ignore_error}

realclean: distclean
"

COMMON_HEADERS =

Common headers for Ruby C extensions

# File 'lib/mkmf.rb', line 2663
```
hdr.join("\n")
```
COMMON_LIBS =

Common libraries for Ruby C extensions

# File 'lib/mkmf.rb', line 2668
```
config_string('COMMON_LIBS', &split) || []
```

COMPILE_C =

Command which will compile C files in the generated Makefile

# File 'lib/mkmf.rb', line 2679

config_string('COMPILE_C') || '$(CC) $(INCFLAGS) $(CPPFLAGS) $(CFLAGS) $(COUTFLAG)$@ -c $(CSRCFLAG)$<'

COMPILE_CXX =

Command which will compile C++ files in the generated Makefile

# File 'lib/mkmf.rb', line 2684

config_string('COMPILE_CXX') || '$(CXX) $(INCFLAGS) $(CPPFLAGS) $(CXXFLAGS) $(COUTFLAG)$@ -c $(CSRCFLAG)$<'

COMPILE_RULES =

make compile rules

# File 'lib/mkmf.rb', line 2673
```
config_string('COMPILE_RULES', &split) || %w[.%s.%s:]
```
CONFIG =

The makefile configuration using the defaults from when Ruby was built.

# File 'lib/mkmf.rb', line 69
```
RbConfig::MAKEFILE_CONFIG
```
CONFTEST = Internal use only
# File 'lib/mkmf.rb', line 258
```
"conftest".freeze
```
CONFTEST_C = Internal use only
# File 'lib/mkmf.rb', line 259
```
"#{CONFTEST}.c"
```
COUTFLAG = Internal use only
# File 'lib/mkmf.rb', line 262

CPPOUTFILE = Internal use only
# File 'lib/mkmf.rb', line 264

config_string('CPPOUTFILE') {|str| str.sub(/\bconftest\b/, CONFTEST)}

CSRCFLAG = Internal use only
# File 'lib/mkmf.rb', line 263
CXX_EXT =

Extensions for files complied with a C++ compiler

# File 'lib/mkmf.rb', line 80
```
%w[cc mm cxx cpp]
```
C_EXT =

Extensions for files compiled with a C compiler

# File 'lib/mkmf.rb', line 75
```
%w[c m]
```
EXPORT_PREFIX =
# File 'lib/mkmf.rb', line 2645
```
config_string('EXPORT_PREFIX') {|s| s.strip}
```

FailedMessage = Internal use only
# File 'lib/mkmf.rb', line 2572

<<MESSAGE
Could not create Makefile due to some reason, probably lack of necessary
libraries and/or headers.  Check the mkmf.log file for more details.  You may
need configuration options.

Provided configuration options:
MESSAGE

HDR_EXT =

Extensions for header files

# File 'lib/mkmf.rb', line 93
```
%w[h hpp]
```

INSTALL_DIRS = Internal use only
# File 'lib/mkmf.rb', line 167

[
  [dir_re('commondir'), "$(RUBYCOMMONDIR)"],
  [dir_re('sitedir'), "$(RUBYCOMMONDIR)"],
  [dir_re('vendordir'), "$(RUBYCOMMONDIR)"],
  [dir_re('rubylibdir'), "$(RUBYLIBDIR)"],
  [dir_re('archdir'), "$(RUBYARCHDIR)"],
  [dir_re('sitelibdir'), "$(RUBYLIBDIR)"],
  [dir_re('vendorlibdir'), "$(RUBYLIBDIR)"],
  [dir_re('sitearchdir'), "$(RUBYARCHDIR)"],
  [dir_re('vendorarchdir'), "$(RUBYARCHDIR)"],
  [dir_re('rubyhdrdir'), "$(RUBYHDRDIR)"],
  [dir_re('sitehdrdir'), "$(SITEHDRDIR)"],
  [dir_re('vendorhdrdir'), "$(VENDORHDRDIR)"],
  [dir_re('bindir'), "$(BINDIR)"],
]

LIBARG =

Argument which will add a library to the linker

# File 'lib/mkmf.rb', line 2724
```
config_string('LIBARG') || '-l%s'
```
LIBPATHFLAG =

Argument which will add a library path to the linker

# File 'lib/mkmf.rb', line 2718
```
config_string('LIBPATHFLAG') || ' -L%s'
```

LINK_SO =

Command which will link a shared library

# File 'lib/mkmf.rb', line 2706

(config_string('LINK_SO') || "").sub(/^$/) do
  if CONFIG["DLEXT"] == $OBJEXT
    "ld $(DLDFLAGS) -r -o $@ $(OBJS)\n"
  else
    "$(LDSHARED) #{OUTFLAG}$@ $(OBJS) " \
    "$(LIBPATH) $(DLDFLAGS) $(LOCAL_LIBS) $(LIBS)"
  end
end

MAIN_DOES_NOTHING =

A C main function which does no work

# File 'lib/mkmf.rb', line 2729

config_string('MAIN_DOES_NOTHING') || "int main(int argc, char **argv)\n{\n  return 0;\n}"

ORIG_LIBPATH =
# File 'lib/mkmf.rb', line 70
```
ENV['LIB']
```
OUTFLAG = Internal use only
# File 'lib/mkmf.rb', line 261
RPATHFLAG =
# File 'lib/mkmf.rb', line 2719
```
config_string('RPATHFLAG') || ''
```
RULE_SUBST =
# File 'lib/mkmf.rb', line 2674
```
config_string('RULE_SUBST')
```
SRC_EXT =

Extensions for source files

# File 'lib/mkmf.rb', line 88
```
C_EXT + CXX_EXT
```
STRING_OR_FAILED_FORMAT = Internal use only
# File 'lib/mkmf.rb', line 1310
```
"%s"
```

TRY_LINK =

Command which will compile a program in order to test linking a library

# File 'lib/mkmf.rb', line 2699

config_string('TRY_LINK') ||
"$(CC) #{OUTFLAG}#{CONFTEST}#{$EXEEXT} $(INCFLAGS) $(CPPFLAGS) " \
"$(CFLAGS) $(src) $(LIBPATH) $(LDFLAGS) $(ARCH_FLAG) $(LOCAL_LIBS) $(LIBS)"

UNIVERSAL_INTS =
# File 'lib/mkmf.rb', line 2730

config_string('UNIVERSAL_INTS') {|s| Shellwords.shellwords(s)} ||
%w[int short long long\ long]