Outdated Story (find the update below the next heading)
I can't find out why wdm won't install on my computer. I have tried using the Cygwin bash, Windows cmd and GIT bash.
Console output:
$ gem install wdm
Building native extensions. This could take a while...
ERROR: Error installing wdm:
ERROR: Failed to build gem native extension.
c:/Ruby22-x64/bin/ruby.exe -r ./siteconf20151202-6644-1ws9slg.rb extconf.rb
checking for main() in -lkernel32... *** extconf.rb failed ***
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:
--with-opt-dir
--without-opt-dir
--with-opt-include
--without-opt-include=${opt-dir}/include
--with-opt-lib
--without-opt-lib=${opt-dir}/lib
--with-make-prog
--without-make-prog
--srcdir=.
--curdir
--ruby=c:/Ruby22-x64/bin/$(RUBY_BASE_NAME)
--with-kernel32lib
--without-kernel32lib
c:/Ruby22-x64/lib/ruby/2.2.0/mkmf.rb:456:in `try_do': The compiler failed to gen
erate an executable file. (RuntimeError)
You have to install development tools first.
from c:/Ruby22-x64/lib/ruby/2.2.0/mkmf.rb:541:in `try_link0'
from c:/Ruby22-x64/lib/ruby/2.2.0/mkmf.rb:556:in `try_link'
from c:/Ruby22-x64/lib/ruby/2.2.0/mkmf.rb:735:in `try_func'
from c:/Ruby22-x64/lib/ruby/2.2.0/mkmf.rb:966:in `block in have_library'
from c:/Ruby22-x64/lib/ruby/2.2.0/mkmf.rb:911:in `block in checking_for'
from c:/Ruby22-x64/lib/ruby/2.2.0/mkmf.rb:351:in `block (2 levels) in po
stpone'
from c:/Ruby22-x64/lib/ruby/2.2.0/mkmf.rb:321:in `open'
from c:/Ruby22-x64/lib/ruby/2.2.0/mkmf.rb:351:in `block in postpone'
from c:/Ruby22-x64/lib/ruby/2.2.0/mkmf.rb:321:in `open'
from c:/Ruby22-x64/lib/ruby/2.2.0/mkmf.rb:347:in `postpone'
from c:/Ruby22-x64/lib/ruby/2.2.0/mkmf.rb:910:in `checking_for'
from c:/Ruby22-x64/lib/ruby/2.2.0/mkmf.rb:961:in `have_library'
from extconf.rb:19:in `<main>'
extconf failed, exit code 1
Gem files will remain installed in c:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/wdm-0.
1.1 for inspection.
Results logged to c:/Ruby22-x6
mkmf.log:
"x86_64-w64-mingw32-gcc -o conftest.exe -Ic:/Ruby22-x64/include/ruby-2.2.0/x64-mingw32 -Ic:/Ruby22-x64/include/ruby-2.2.0/ruby/backward -Ic:/Ruby22-x64/include/ruby-2.2.0 -I. -DFD_SETSIZE=2048 -D_WIN32_WINNT=0x0501 -D__MINGW_USE_VC2005_COMPAT -D_FILE_OFFSET_BITS=64 -O3 -fno-omit-frame-pointer -fno-fast-math -g -Wall -Wextra -Wno-unused-parameter -Wno-parentheses -Wno-long-long -Wno-missing-field-initializers -Wunused-variable -Wpointer-arith -Wwrite-strings -Wdeclaration-after-statement -Wimplicit-function-declaration -Wdeprecated-declarations -Wno-packed-bitfield-compat conftest.c -L. -Lc:/Ruby22-x64/lib -L. -lx64-msvcrt-ruby220 -lshell32 -lws2_32 -liphlpapi -limagehlp -lshlwapi "
checked program was:
/* begin */
1: #include "ruby.h"
2:
3: #include <winsock2.h>
4: #include <windows.h>
5: int main(int argc, char **argv)
6: {
7: return 0;
8: }
/* end */
Update 1
Although I have a Cygwin environment with gcc running, the sentence “You have to install development tools first” contained the pro tip to follow.
To be more precise I lacked the x86_64-w64-mingw32-gcc compiler. I downloaded the installer from SourceForge (link to the installer download is above the file list) and managed to install it on the second try (the first try failed with a download failed message; it appears to be random).
However, it still doesn't work.
Console output:
$ gem install wdm
Building native extensions. This could take a while...
ERROR: Error installing wdm:
ERROR: Failed to build gem native extension.
Also console output, but this is the content of the gem_make.out as well:
c:/Ruby22-x64/bin/ruby.exe -r ./siteconf20151204-42084-zsi0td.rb extconf.rb
checking for main() in -lkernel32... yes
checking for windows.h... yes
checking for ruby.h... yes
checking for HAVE_RUBY_ENCODING_H... yes
checking for rb_thread_call_without_gvl()... yes
creating Makefile
make "DESTDIR=" clean
make "DESTDIR="
generating wdm_ext-x64-mingw32.def
/bin/sh: /c/Ruby22-x64/bin/ruby: No such file or directory
Makefile:260: recipe for target 'wdm_ext-x64-mingw32.def' failed
make: *** [wdm_ext-x64-mingw32.def] Error 127
make failed, exit code 2
Further console output:
Gem files will remain installed in c:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/wdm-0.
1.1 for inspection.
Results logged to c:/Ruby22-x64/lib/ruby/gems/2.2.0/extensions/x64-mingw32/2.2.0
/wdm-0.1.1/gem_make.out
The line /bin/sh: /c/Ruby22-x64/bin/ruby: No such file or directory confuses me. This happens in all three shells, Cygwin, GIT Bash as well as CMD. In the GIT Bash I'm able to resolve the path /c/Ruby22-x64/bin/ruby manually. It exists and works. Also which ruby points to the right ruby as well.
