rdiscount "ERROR: Failed to build gem native extension." - rvm

This is interesting. I had rdiscount working within one rvm gemset, but when I tried to add it to another, I would get ERROR: Failed to build gem native extension. So I tried removing it from the original gemset and re-installing it only to get the same error. I'm not sure what is going on. I'm trying to use it with Jekyll and Octopress builds. I'm on OS X 10.7.5.
Here's what happens:
Using /Users/rachelnabors/.rvm/gems/ruby-1.9.2-p290 with gemset jekyll
Can-Opener:RachelNabors.com rachelnabors$ gem install rdiscount
Building native extensions. This could take a while...
ERROR: Error installing rdiscount:
ERROR: Failed to build gem native extension.
/Users/rachelnabors/.rvm/rubies/ruby-1.9.2-p290/bin/ruby extconf.rb
checking for random()... yes
checking for srandom()... yes
checking for rand()... yes
checking for srand()... yes
checking size of unsigned long... long
checking size of unsigned int... int
no int with size 4
*** 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=/Users/rachelnabors/.rvm/rubies/ruby-1.9.2-p290/bin/ruby
--with-rdiscount-dir
--without-rdiscount-dir
--with-rdiscount-include
--without-rdiscount-include=${rdiscount-dir}/include
--with-rdiscount-lib
--without-rdiscount-lib=${rdiscount-dir}/lib
Gem files will remain installed in /Users/rachelnabors/.rvm/gems/ruby-1.9.2-p290#jekyll/gems/rdiscount-2.0.7.1 for inspection.
Results logged to /Users/rachelnabors/.rvm/gems/ruby-1.9.2-p290#jekyll/gems/rdiscount-2.0.7.1/ext/gem_make.out

Same failure:
https://github.com/rtomayko/rdiscount/issues/48
Ruby 1.9.2 isn't supported. See also:
https://github.com/rtomayko/rdiscount/wiki/Support-Matrix
1.9.3 should do ya fine!

Related

Unable To Install 'therubyracer v0.12.3' gem in M1 Macbook Pro

I am using M1 Macbook Pro and wants to install therubyracer and libv8 for a rails webapp. But I am unable to do so because of the errors described below. There are several solutions available on the internet but none of them is working for me.
Operating System: macOS Big Sur v11.1.
It would be very helpful if someone can help me with this.
Log:
❯ ruby -v
ruby 2.5.5p157 (2019-03-15 revision 67260) [-darwin20]
❯ bundle -v
Bundler version 1.17.3
❯ brew -v
Homebrew 2.7.5
Homebrew/homebrew-core (git revision e04a30; last commit 2021-01-20)
Homebrew/homebrew-cask (git revision d128de; last commit 2021-01-20)
❯ uname -a
Darwin Vaibhavs-MacBook-Pro.local 20.2.0 Darwin Kernel Version 20.2.0: Wed Dec 2 20:40:21 PST 2020; root:xnu-7195.60.75~1/RELEASE_ARM64_T8101 arm64
❯ brew search v8
==> Formulae
v8 ✔ v8#3.15
==> Casks
amitv87-pip
❯ brew install v8#3.15
Updating Homebrew...
==> Auto-updated Homebrew!
Updated 2 taps (homebrew/core and homebrew/cask).
==> Updated Formulae
Updated 3 formulae.
==> Updated Casks
Updated 3 casks.
Error: v8#3.15: no bottle available!
You can try to install from source with:
brew install --build-from-source v8#3.15
Please note building from source is unsupported. You will encounter build
failures with some formulae. If you experience any issues please create pull
requests instead of asking for help on Homebrew's GitHub, Twitter or any other
official channels.
❯ brew install --build-from-source v8#3.15
Updating Homebrew...
==> Auto-updated Homebrew!
Updated 1 tap (homebrew/cask).
==> Updated Casks
Updated 1 cask.
==> Cloning https://chromium.googlesource.com/external/gyp.git
Updating /Users/vaibhavgupta/Library/Caches/Homebrew/v8#3.15--gyp--git
==> Checking out revision f7bc250ccc4d619a1cf238db87e5979f89ff36d7
HEAD is now at f7bc250c Make gyp/win32 compatible with upstream ninja.
HEAD is now at f7bc250c Make gyp/win32 compatible with upstream ninja.
==> Downloading https://github.com/v8/v8-git-mirror/archive/3.15.11.18.tar.gz
Already downloaded: /Users/vaibhavgupta/Library/Caches/Homebrew/downloads/26ea05158c6c6ebb67cc42075858df9a986f9c615513933b1e62bb707f707854--v8-3.15.11.18.tar.gz
==> make native -j8 library=shared snapshot=on console=readline
Last 15 lines from /Users/vaibhavgupta/Library/Logs/Homebrew/v8#3.15/01.make:
Atomic32 Acquire_Load(volatile const Atomic32* ptr);
^
In file included from ../src/conversions.cc:32:
In file included from ../src/conversions-inl.h:42:
In file included from ../src/platform.h:100:
In file included from ../src/lazy-instance.h:94:
../src/once.h:115:7: error: no matching function for call to 'Acquire_Load'
if (Acquire_Load(once) != ONCE_STATE_DONE) {
^~~~~~~~~~~~
../src/atomicops.h:125:10: note: candidate function not viable: no known conversion from 'v8::internal::OnceType *' (aka 'long *') to 'const volatile v8::internal::Atomic32 *' (aka 'const volatile int *') for 1st argument
Atomic32 Acquire_Load(volatile const Atomic32* ptr);
^
5 errors generated.
make[1]: *** [/private/tmp/v8-3.15-20210120-4211-1soh8ig/v8-3.15.11.18/out/native/obj.target/preparser_lib/src/conversions.o] Error 1
make: *** [native] Error 2
Do not report this issue to Homebrew/brew or Homebrew/core!
❯ brew install v8
==> Downloading https://homebrew.bintray.com/bottles/v8-8.8.278.14.arm64_big_sur.bottle.tar.gz
Already downloaded: /Users/vaibhavgupta/Library/Caches/Homebrew/downloads/457adba5b4da5d7cb7d6d896218ebc5d8f1453782321e97a3df424f4a4e8a821--v8-8.8.278.14.arm64_big_sur.bottle.tar.gz
==> Pouring v8-8.8.278.14.arm64_big_sur.bottle.tar.gz
🍺 /opt/homebrew/Cellar/v8/8.8.278.14: 80 files, 39.9MB
❯ brew --prefix v8
/opt/homebrew/opt/v8
❯ gem install libv8 -v '3.16.14.19'
Fetching libv8-3.16.14.19.gem
Building native extensions. This could take a while...
ERROR: Error installing libv8:
ERROR: Failed to build gem native extension.
current directory: /Users/vaibhavgupta/.rvm/gems/ruby-2.5.5/gems/libv8-3.16.14.19/ext/libv8
/Users/vaibhavgupta/.rvm/rubies/ruby-2.5.5/bin/ruby -I /Users/vaibhavgupta/.rvm/rubies/ruby-2.5.5/lib/ruby/site_ruby/2.5.0 -r ./siteconf20210120-6051-11xeqcl.rb extconf.rb
creating Makefile
Applying /Users/vaibhavgupta/.rvm/gems/ruby-2.5.5/gems/libv8-3.16.14.19/patches/disable-building-tests.patch
Applying /Users/vaibhavgupta/.rvm/gems/ruby-2.5.5/gems/libv8-3.16.14.19/patches/disable-werror-on-osx.patch
Applying /Users/vaibhavgupta/.rvm/gems/ruby-2.5.5/gems/libv8-3.16.14.19/patches/disable-xcode-debugging.patch
Applying /Users/vaibhavgupta/.rvm/gems/ruby-2.5.5/gems/libv8-3.16.14.19/patches/do-not-imply-vfp3-and-armv7.patch
Applying /Users/vaibhavgupta/.rvm/gems/ruby-2.5.5/gems/libv8-3.16.14.19/patches/do-not-use-MAP_NORESERVE-on-freebsd.patch
Applying /Users/vaibhavgupta/.rvm/gems/ruby-2.5.5/gems/libv8-3.16.14.19/patches/do-not-use-vfp2.patch
Applying /Users/vaibhavgupta/.rvm/gems/ruby-2.5.5/gems/libv8-3.16.14.19/patches/fPIC-for-static.patch
Compiling v8 for arm
Using python 2.7.16
Using compiler: c++ (clang version 12.0.0)
Unable to find a compiler officially supported by v8.
It is recommended to use GCC v4.4 or higher
Beginning compilation. This will take some time.
Building v8 with env CXX=c++ LINK=c++ /usr/bin/make arm.release vfp2=off vfp3=on hardfp=on ARFLAGS.target=crs werror=no
GYP_GENERATORS=make \
build/gyp/gyp --generator-output="out" build/all.gyp \
-Ibuild/standalone.gypi --depth=. \
-Dv8_target_arch=arm \
-S.arm -Dv8_enable_backtrace=1 -Dv8_can_use_vfp2_instructions=false -Dv8_can_use_vfp3_instructions=true -Darm_fpu=vfpv3 -Dwerror='' -Dv8_use_arm_eabi_hardfloat=true
CXX(target) /Users/vaibhavgupta/.rvm/gems/ruby-2.5.5/gems/libv8-3.16.14.19/vendor/v8/out/arm.release/obj.target/preparser_lib/src/allocation.o
clang: warning: include path for libstdc++ headers not found; pass '-stdlib=libc++' on the command line to use the libc++ standard library instead [-Wstdlibcxx-not-found]
In file included from ../src/allocation.cc:33:
../src/utils.h:33:10: fatal error: 'climits' file not found
#include <climits>
^~~~~~~~~
1 error generated.
make[1]: *** [/Users/vaibhavgupta/.rvm/gems/ruby-2.5.5/gems/libv8-3.16.14.19/vendor/v8/out/arm.release/obj.target/preparser_lib/src/allocation.o] Error 1
make: *** [arm.release] Error 2
/Users/vaibhavgupta/.rvm/gems/ruby-2.5.5/gems/libv8-3.16.14.19/ext/libv8/location.rb:36:in `block in verify_installation!': libv8 did not install properly, expected binary v8 archive '/Users/vaibhavgupta/.rvm/gems/ruby-2.5.5/gems/libv8-3.16.14.19/vendor/v8/out/arm.release/obj.target/tools/gyp/libv8_base.a'to exist, but it was not found (Libv8::Location::Vendor::ArchiveNotFound)
from /Users/vaibhavgupta/.rvm/gems/ruby-2.5.5/gems/libv8-3.16.14.19/ext/libv8/location.rb:35:in `each'
from /Users/vaibhavgupta/.rvm/gems/ruby-2.5.5/gems/libv8-3.16.14.19/ext/libv8/location.rb:35:in `verify_installation!'
from /Users/vaibhavgupta/.rvm/gems/ruby-2.5.5/gems/libv8-3.16.14.19/ext/libv8/location.rb:26:in `install!'
from extconf.rb:7:in `<main>'
extconf failed, exit code 1
Gem files will remain installed in /Users/vaibhavgupta/.rvm/gems/ruby-2.5.5/gems/libv8-3.16.14.19 for inspection.
Results logged to /Users/vaibhavgupta/.rvm/gems/ruby-2.5.5/extensions/-darwin-20/2.5.0/libv8-3.16.14.19/gem_make.out
❯ gem install libv8 -v '3.16.14.19' -- --with-system-v8
Building native extensions with: '--with-system-v8'
This could take a while...
Successfully installed libv8-3.16.14.19
Parsing documentation for libv8-3.16.14.19
Installing ri documentation for libv8-3.16.14.19
Done installing documentation for libv8 after 0 seconds
1 gem installed
❯ gem install therubyracer -v '0.12.3'
Building native extensions. This could take a while...
ERROR: Error installing therubyracer:
ERROR: Failed to build gem native extension.
current directory: /Users/vaibhavgupta/.rvm/gems/ruby-2.5.5/gems/therubyracer-0.12.3/ext/v8
/Users/vaibhavgupta/.rvm/rubies/ruby-2.5.5/bin/ruby -I /Users/vaibhavgupta/.rvm/rubies/ruby-2.5.5/lib/ruby/site_ruby/2.5.0 -r ./siteconf20210120-6195-ojni3j.rb extconf.rb
checking for -lpthread... yes
checking for -lobjc... yes
checking for v8.h... no
*** 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
--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=/Users/vaibhavgupta/.rvm/rubies/ruby-2.5.5/bin/$(RUBY_BASE_NAME)
--with-pthreadlib
--without-pthreadlib
--with-objclib
--without-objclib
--enable-debug
--disable-debug
--with-v8-dir
--without-v8-dir
--with-v8-include
--without-v8-include=${v8-dir}/include
--with-v8-lib
--without-v8-lib=${v8-dir}/lib
/Users/vaibhavgupta/.rvm/gems/ruby-2.5.5/gems/libv8-3.16.14.19/ext/libv8/location.rb:50:in `configure': By using --with-system-v8, you have chosen to use the version (Libv8::Location::System::NotFoundError)
of V8 found on your system and *not* the one that is bundled with
the libv8 rubygem.
However, your system version of v8 could not be located.
Please make sure your system version of v8 that is compatible
with 3.16.14.19 installed. You may need to use the
--with-v8-dir option if it is installed in a non-standard location
from /Users/vaibhavgupta/.rvm/gems/ruby-2.5.5/gems/libv8-3.16.14.19/lib/libv8.rb:7:in `configure_makefile'
from extconf.rb:32:in `<main>'
To see why this extension failed to compile, please check the mkmf.log which can be found here:
/Users/vaibhavgupta/.rvm/gems/ruby-2.5.5/extensions/-darwin-20/2.5.0/therubyracer-0.12.3/mkmf.log
extconf failed, exit code 1
Gem files will remain installed in /Users/vaibhavgupta/.rvm/gems/ruby-2.5.5/gems/therubyracer-0.12.3 for inspection.
Results logged to /Users/vaibhavgupta/.rvm/gems/ruby-2.5.5/extensions/-darwin-20/2.5.0/therubyracer-0.12.3/gem_make.out
❯ gem install therubyracer -v '0.12.3' -- --with-v8-dir=/opt/homebrew/opt/v8
Building native extensions with: '--with-v8-dir=/opt/homebrew/opt/v8'
This could take a while...
ERROR: Error installing therubyracer:
ERROR: Failed to build gem native extension.
current directory: /Users/vaibhavgupta/.rvm/gems/ruby-2.5.5/gems/therubyracer-0.12.3/ext/v8
/Users/vaibhavgupta/.rvm/rubies/ruby-2.5.5/bin/ruby -I /Users/vaibhavgupta/.rvm/rubies/ruby-2.5.5/lib/ruby/site_ruby/2.5.0 -r ./siteconf20210120-6214-10f7ru2.rb extconf.rb --with-v8-dir\=/opt/homebrew/opt/v8
checking for -lpthread... yes
checking for -lobjc... yes
checking for v8.h... no
*** 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
--with-opt-include
--without-opt-include=${opt-dir}/include
--with-opt-lib
--without-opt-lib=${opt-dir}/lib
--with-make-prog
--without-make-prog
--srcdir=.
--curdir
--ruby=/Users/vaibhavgupta/.rvm/rubies/ruby-2.5.5/bin/$(RUBY_BASE_NAME)
--with-pthreadlib
--without-pthreadlib
--with-objclib
--without-objclib
--enable-debug
--disable-debug
--with-v8-dir
--with-v8-include
--without-v8-include=${v8-dir}/include
--with-v8-lib
--without-v8-lib=${v8-dir}/lib
/Users/vaibhavgupta/.rvm/gems/ruby-2.5.5/gems/libv8-3.16.14.19/ext/libv8/location.rb:50:in `configure': By using --with-system-v8, you have chosen to use the version (Libv8::Location::System::NotFoundError)
of V8 found on your system and *not* the one that is bundled with
the libv8 rubygem.
However, your system version of v8 could not be located.
Please make sure your system version of v8 that is compatible
with 3.16.14.19 installed. You may need to use the
--with-v8-dir option if it is installed in a non-standard location
from /Users/vaibhavgupta/.rvm/gems/ruby-2.5.5/gems/libv8-3.16.14.19/lib/libv8.rb:7:in `configure_makefile'
from extconf.rb:32:in `<main>'
To see why this extension failed to compile, please check the mkmf.log which can be found here:
/Users/vaibhavgupta/.rvm/gems/ruby-2.5.5/extensions/-darwin-20/2.5.0/therubyracer-0.12.3/mkmf.log
extconf failed, exit code 1
Gem files will remain installed in /Users/vaibhavgupta/.rvm/gems/ruby-2.5.5/gems/therubyracer-0.12.3 for inspection.
Results logged to /Users/vaibhavgupta/.rvm/gems/ruby-2.5.5/extensions/-darwin-20/2.5.0/therubyracer-0.12.3/gem_make.out
❯ gem install therubyracer -v '0.12.3' -- --with-v8-dir=/opt/homebrew/opt/v8/libexec/
Building native extensions with: '--with-v8-dir=/opt/homebrew/opt/v8/libexec/'
This could take a while...
ERROR: Error installing therubyracer:
ERROR: Failed to build gem native extension.
current directory: /Users/vaibhavgupta/.rvm/gems/ruby-2.5.5/gems/therubyracer-0.12.3/ext/v8
/Users/vaibhavgupta/.rvm/rubies/ruby-2.5.5/bin/ruby -I /Users/vaibhavgupta/.rvm/rubies/ruby-2.5.5/lib/ruby/site_ruby/2.5.0 -r ./siteconf20210120-6235-1hlxxtd.rb extconf.rb --with-v8-dir\=/opt/homebrew/opt/v8/libexec/
checking for -lpthread... yes
checking for -lobjc... yes
checking for v8.h... no
*** 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
--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=/Users/vaibhavgupta/.rvm/rubies/ruby-2.5.5/bin/$(RUBY_BASE_NAME)
--with-pthreadlib
--without-pthreadlib
--with-objclib
--without-objclib
--enable-debug
--disable-debug
--with-v8-dir
--with-v8-include
--without-v8-include=${v8-dir}/include
--with-v8-lib
--without-v8-lib=${v8-dir}/lib
/Users/vaibhavgupta/.rvm/gems/ruby-2.5.5/gems/libv8-3.16.14.19/ext/libv8/location.rb:50:in `configure': By using --with-system-v8, you have chosen to use the version (Libv8::Location::System::NotFoundError)
of V8 found on your system and *not* the one that is bundled with
the libv8 rubygem.
However, your system version of v8 could not be located.
Please make sure your system version of v8 that is compatible
with 3.16.14.19 installed. You may need to use the
--with-v8-dir option if it is installed in a non-standard location
from /Users/vaibhavgupta/.rvm/gems/ruby-2.5.5/gems/libv8-3.16.14.19/lib/libv8.rb:7:in `configure_makefile'
from extconf.rb:32:in `<main>'
To see why this extension failed to compile, please check the mkmf.log which can be found here:
/Users/vaibhavgupta/.rvm/gems/ruby-2.5.5/extensions/-darwin-20/2.5.0/therubyracer-0.12.3/mkmf.log
extconf failed, exit code 1
Gem files will remain installed in /Users/vaibhavgupta/.rvm/gems/ruby-2.5.5/gems/therubyracer-0.12.3 for inspection.
Results logged to /Users/vaibhavgupta/.rvm/gems/ruby-2.5.5/extensions/-darwin-20/2.5.0/therubyracer-0.12.3/gem_make.out
This works for me:
Ruby version: 2.6.1
OS version: macOS Big Sur 11.2
Install HomeBrew using Rosetta Termina
https://5balloons.info/correct-way-to-install-and-use-homebrew-on-m1-macs/
brew install v8#3.15
gem install libv8 -v '3.16.14.19' -- --with-system-v8
gem install therubyracer -- --with-v8-dir=/usr/local/opt/v8#3.15
I fixed this by installing V8 on Rosseta 2 as V8 not yet supported for ARM.
You can try this
gem install therubyracer -v '0.12.3' --
--with-v8-dir=/usr/local/opt/v8#3.15
Or install V8 on Rosseta 2.
Update: How to install ruby in x86_64 for M1.
Install homebrew in x86_64. Please refer to this guide How to install ruby on m1
Install ASDF using x86_64
Install all other dependencies on x86_64 only such as postgres, redis, and V8 using x86_64 only.

Unable to install pg gem (Rails 3 - Cygwin) - sh: : command not found

When I run
$ gem install pg
I get the following
Building native extensions. This could take a while...
ERROR: Error installing pg:
ERROR: Failed to build gem native extension.
/usr/bin/ruby.exe extconf.rb
checking for pg_config... no
No pg_config... trying anyway. If building fails, please try again with
--with-pg-config=/path/to/pg_config
checking for libpq-fe.h... no
Can't find the 'libpq-fe.h header
*** 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=/usr/bin/ruby
--with-pg
--without-pg
--with-pg-dir
--without-pg-dir
--with-pg-include
--without-pg-include=${pg-dir}/include
--with-pg-lib
--without-pg-lib=${pg-dir}/lib
--with-pg-config
--without-pg-config
--with-pg_config
--without-pg_config
Gem files will remain installed in /usr/lib/ruby/gems/1.9.1/gems/pg-0.15.1 for inspection.
Results logged to /usr/lib/ruby/gems/1.9.1/gems/pg-0.15.1/ext/gem_make.out
When I run
$ gem install pg -- --with-pg-config= /cygdrive/c/Program Files/PostgreSQL/9.0/bin/pg-config
I get the following
Building native extensions. This could take a while...
ERROR: Error installing pg:
ERROR: Failed to build gem native extension.
/usr/bin/ruby.exe extconf.rb --with-pg-config= /cygdrive/c/Program Files/PostgreSQL/9.0/bin/pg-config
Using config values from
sh: : command not found
sh: : command not found
checking for libpq-fe.h... no
Can't find the 'libpq-fe.h header
*** 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=/usr/bin/ruby
--with-pg
--without-pg
--with-pg-dir
--without-pg-dir
--with-pg-include
--without-pg-include=${pg-dir}/include
--with-pg-lib
--without-pg-lib=${pg-dir}/lib
--with-pg-config
Gem files will remain installed in /usr/lib/ruby/gems/1.9.1/gems/pg-0.15.1 for inspection.
Results logged to /usr/lib/ruby/gems/1.9.1/gems/pg-0.15.1/ext/gem_make.out
What does the "sh: : command not found" mean?
Is this the reason why the installation is failing?
Background:
I am using Cygwin
I used the one click installer of PostgreSQL
The pg_config.exe file is located at C/Program Files/PostgreSQL/9.0/bin/pg-config.exe
The libpq-fe.h file is located at C/Program Files/PostgreSQL/9.0/include/libpq-fe.h
You can't mix and match native Windows code and Cygwin code. If you want to link to libpq you'll need the cygwin build libpq and you'll need to make sure the version of pg_config found on the PATH is the cygwin one. The pg_config from the native Windows build will produce output the Cygwin tools cannot understand, and even if they could they wouldn't successfully link against the native library and run with it.
As I no longer use Cygwin I can't offer any advice on the current way to install libpq. Presumably there's a lib in Cygwin's package management that'll be called something like postgresql-client, libpq, etc.
Cygwin is a pretty low priority platform for PostgreSQL at this point. Given that Ruby+Rails and PostgreSQL both have native Windows versions, you're setting yourself up for a hard time here, and I'd advise you to use the native versions of both tools. You can still work within a unix-like shell environment using msys bash and can use MinGW's gcc to produce native Windows executables and libraries if MSVC++ isn't an option.
This worked for me:
sudo apt-get install postgresql
sudo apt-get install libpq-dev
Then
gem install pg

Error "...cannot load such file -- mysql2/2.0/mysql2 (LoadError)". On Windows XP with Ruby 2.0.0

The command rails server throws this error.
C:/Ruby200/lib/ruby/gems/2.0.0/gems/mysql2-0.3.11-x86-mingw32/lib/mysql2/mysql2.rb:2:in `require': cannot load
such file -- mysql2/2.0/mysql2 (LoadError)
I use Ruby 2.0.0 from RubyInstaller on Windows XP box.
I figured out what is the problem but I don't know how to solve it. The problem is that there is no any 2.0/ directory in the mysql2-0.3.11-x86-mingw32 gem. This is the gem that rails installs as its dependency from Gemfile:
GEM
remote: https://rubygems.org/
specs:
... many gems here
mysql2 (0.3.11-x86-mingw32)
... many gems here
DEPENDENCIES
...
mysql2
...
This is what is in that mysql2.rb file:
# C:\Ruby200\lib\ruby\gems\2.0.0\gems\mysql2-0.3.11-x86-mingw32\lib\mysql2\mysql2.rb
RUBY_VERSION =~ /(\d+.\d+)/
require "mysql2/#{$1}/mysql2" # <<-- this is that #2 line that throws an error
It is obvious that it takes the current Ruby version number and uses it as the path segment to reach some mysql2 file. In fact it is mysql2.so file. As I use Ruby 2.0.0 the path segment is 2.0:
mysql2/2.0/mysql2
Ok, now lets see how that directory of mysql2-0.3.11-x86-mingw32 gem looks like:
dir: C:\Ruby200\lib\ruby\gems\2.0.0\gems\mysql2-0.3.11-x86-mingw32\lib\mysql2\
No any 2.0/ directory.
I know the issue about libmysql.dll. I have it in my C:\Ruby200\bin. It doesn't help.
I read this answer https://stackoverflow.com/a/5368767/1114926 from the creator of RubyInstaller. I tried but it didn't help. It works for Ruby 1.9.3 because there is 1.9/ directory. But it doesn't work for Ruby 2.0.0.
How to solve it?
UPD 1:
Thank you for your answer. I've tried. Unfortunately I have ERROR: Failed to build gem native extension. error:
C:\>gem install mysql2 --platform=ruby
Temporarily enhancing PATH to include DevKit...
Building native extensions. This could take a while...
ERROR: Error installing mysql2:
ERROR: Failed to build gem native extension.
C:/Ruby200/bin/ruby.exe extconf.rb
checking for rb_thread_blocking_region()... *** extconf.rb failed ***
Could not create Makefile due to some reason, probably lack of necessary
libraries and/or headers. Check the mkmf.log file for more details. You may
need configuration options.
Provided configuration options:
--with-opt-dir
--without-opt-dir
--with-opt-include
--without-opt-include=${opt-dir}/include
--with-opt-lib
--without-opt-lib=${opt-dir}/lib
--with-make-prog
--without-make-prog
--srcdir=.
--curdir
--ruby=C:/Ruby200/bin/ruby
C:/Ruby200/lib/ruby/2.0.0/mkmf.rb:431:in `try_do': The compiler failed to generate an executable file. (Runtim
eError)
You have to install development tools first.
... other code follows here...
It says:
You have to install development tools first.
But I have full DevKit installed, RubyInstaller installs it. Can't understand what else does it need.
I've already posted an issue to mysql2 GitHub page https://github.com/brianmario/mysql2/issues/364. No answers yet.
Had the absolutely same issue on Windows 7 x64 with Ruby 2.0.0 and DevKit 4.7.
The following steps helped me.
gem uninstall mysql2
Download last MySQL connector from http://cdn.mysql.com/Downloads/Connector-C/mysql-connector-c-noinstall-6.0.2-win32.zip
Extract it to C:\connector-6.0.2
gem install mysql2 --platform=ruby -- '--with-mysql-lib="C:\connector-6.0.2\lib" --with-mysql-include="C:\connector-6.0.2\include" --with-mysql-dir="C:\connector-6.0.2"'
Or even shorter:
gem install mysql2 --platform=ruby -- --with-opt-dir="C:\connector-6.0.2"
uninstall mysql2-0.3.11-x86-mingw32, gems compiled before Ruby200 won't work. You have to compile it yourself.
If you run gem uninstall mysql2 and there is a non compiled version listed then just uninstall mysql2-0.3.11-x86-mingw32 - the compiled version else...
Installation
gem install mysql2 --platform=ruby. that would work.
Follow this guide on installing devkit http://rubyonwindowsguides.github.com/book/ch02-04.html.
Then try again.
Exactly the same behavior when I try to install Redmine on windows XP
when I try to do the "rake generate_secret_token", I got "cannot load
such file -- mysql2/2.0/mysql2 (LoadError)"
and when I try to re build mysql2 using --platform=ruby, I got the
same message as you green.
for the moment, I am stucked there ... but if anybody has anything to allow me to move forward, it will be very welcome.
I will keep informed as well
antoine
I almost done the same what #odiszapc described. Uninstall old gem, download mysql-connector-c-noinstall, unzip, but finally I used this command to build native gem:
gem install mysql2 --platform=ruby -- --with-opt-dir=/c/connector-6.0.2
(If you use git-bash then you can use unix style directory syntax.)
Copy paste from that link: https://github.com/brianmario/mysql2/issues/359. It worked for me.
If after installing the gem, you get an error:
"The specified module could not be found.
C:/Devel/Ruby200/lib/ruby/gems/2.0.0/gems/mysql2-0.3.11/lib/mysql2/mysql2.so"
That can be fixed by copying libmysql.dll to Ruby's bin folder.

Installing rmagick on osx 10.7.3 crashed

I got a problem to install rmagick on my osx 10.7.3 lion
I used rvm
Imagemagick is installed with homebrew
gem install rmagick
Fetching: rmagick-2.13.1.gem (100%)
Building native extensions. This could take a while...
ERROR: Error installing rmagick:
ERROR: Failed to build gem native extension
/Users/lion/.rvm/rubies/ruby-1.9.3-p0/bin/ruby extconf.rb
checking for Ruby version >= 1.8.5... yes
extconf.rb:128: Use RbConfig instead of obsolete and deprecated Config.
checking for clang... yes
checking for Magick-config... yes
checking for ImageMagick version >= 6.4.9... yes
checking for HDRI disabled version of ImageMagick... yes
checking for stdint.h... *** 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
--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=/Users/lion/.rvm/rubies/ruby-1.9.3-p0/bin/ruby
/Users/lion/.rvm/rubies/ruby-1.9.3-p0/lib/ruby/1.9.1/mkmf.rb:381:in
try_do': The compiler failed to generate an executable file.
(RuntimeError)
You have to install development tools first.
from /Users/lion/.rvm/rubies/ruby-1.9.3-p0/lib/ruby/1.9.1/mkmf.rb:506:in
try_cpp'
from /Users/lion/.rvm/rubies/ruby-1.9.3-p0/lib/ruby/1.9.1/mkmf.rb:931:in
block in have_header'
from /Users/lion/.rvm/rubies/ruby-1.9.3-p0/lib/ruby/1.9.1/mkmf.rb:790:in
block in checking_for'
from /Users/lion/.rvm/rubies/ruby-1.9.3-p0/lib/ruby/1.9.1/mkmf.rb:284:in
block (2 levels) in postpone'
from /Users/lion/.rvm/rubies/ruby-1.9.3-p0/lib/ruby/1.9.1/mkmf.rb:254:in
open'
from /Users/lion/.rvm/rubies/ruby-1.9.3-p0/lib/ruby/1.9.1/mkmf.rb:284:in
block in postpone'
from /Users/lion/.rvm/rubies/ruby-1.9.3-p0/lib/ruby/1.9.1/mkmf.rb:254:in
open'
from /Users/lion/.rvm/rubies/ruby-1.9.3-p0/lib/ruby/1.9.1/mkmf.rb:280:in
postpone'
from /Users/lion/.rvm/rubies/ruby-1.9.3-p0/lib/ruby/1.9.1/mkmf.rb:789:in
checking_for'
from /Users/lion/.rvm/rubies/ruby-1.9.3-p0/lib/ruby/1.9.1/mkmf.rb:930:in
have_header'
from extconf.rb:193:in'
Gem files will remain installed in /Users/lion/.rvm/gems/ruby-1.9.3-p0/gems/rmagick-2.13.1 for
inspection.
Results logged to /Users/lion/.rvm/gems/ruby-1.9.3-p0/gems/rmagick-2.13.1/ext/RMagick/gem_make.out
Did anyone know what i can do to install rmagick correctly?
I'm going to take a guess that it's an upgrade and not pre-installed? I recently upgraded to Lion and had to do something like:
uninstall xcode 3 (there's a non-destructive version of the uninstall script in case you care)
install xcode 4 (free from the app store. big download).
i use macports. i had to uninstall and reinstall them all. you'll need to do the same for homebrew if you haven't already.
symlink or pass on command line the new gcc compiler (rmagick references gcc-4.2, but with xcode 4 it's called llvm-gcc-4.2. look up what that means if you're interested http://llvm.org/)
That pretty much sums up what I had to do. The clue was in the mkmf.log, so definitely look in there and update your question if my answer doesn't do it for you.

Installing bluecloth - configuration options?

I tried installing the bluecloth gem by typing
gem install bluecloth
But when I do that I get the following error message:
checking for random()... *** 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=/Users/cyrusstoller/.rvm/rubies/ruby-1.9.2-p136/bin/ruby
--with-rdiscount-dir
--without-rdiscount-dir
--with-rdiscount-include
--without-rdiscount-include=${rdiscount-dir}/include
--with-rdiscount-lib
--without-rdiscount-lib=${rdiscount-dir}/lib
What options am I supposed to provide?
I needed to have markdown installed before I tried to install the gem.
run
brew install markdown
then
gem install bluecloth
I had the same problem when trying to install bluecloth 2.0.11 under Ruby 2.2.3. Turns out that Ruby 2.2.3 was too new. Going back to Ruby 2.1.5 resolved the issue.
Check your .ruby-version.