src/ruby/ext/grpc/extconf.rb

# Copyright 2014, Google Inc.
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require 'mkmf'

LIBDIR = RbConfig::CONFIG['libdir']
INCLUDEDIR = RbConfig::CONFIG['includedir']

HEADER_DIRS = [
    # First search the local development dir
    ENV['HOME'] + '/grpc_dev/include',

    # Then search /opt/local (Mac)
    '/opt/local/include',

    # Then search /usr/local (Source install)
    '/usr/local/include',

    # Check the ruby install locations
    INCLUDEDIR,

    # Finally fall back to /usr
    '/usr/include'
]

LIB_DIRS = [
    # First search the local development dir
    ENV['HOME'] + '/grpc_dev/lib',

    # Then search /opt/local for (Mac)
    '/opt/local/lib',

    # Then search /usr/local (Source install)
    '/usr/local/lib',

    # Check the ruby install locations
    LIBDIR,

    # Finally fall back to /usr
    '/usr/lib'
]

def crash(msg)
  print(" extconf failure: %s\n" % msg)
  exit 1
end

dir_config('grpc', HEADER_DIRS, LIB_DIRS)

$CFLAGS << ' -std=c89 '
$CFLAGS << ' -Wno-implicit-function-declaration '
$CFLAGS << ' -Wno-pointer-sign '
$CFLAGS << ' -Wno-return-type '
$CFLAGS << ' -Wall '
$CFLAGS << ' -pedantic '

$LDFLAGS << ' -lgrpc -lgpr -levent -levent_pthreads -levent_core '
$LDFLAGS << ' -lssl -lcrypto '
$DLDFLAGS << ' -Wl,-rpath,/usr/local/ssl/lib '

# crash('need grpc lib') unless have_library('grpc', 'grpc_channel_destroy')
#
# TODO(temiola): figure out why this stopped working, but the so is built OK
# and the tests pass

have_library('grpc', 'grpc_channel_destroy')
crash('need gpr lib') unless have_library('gpr', 'gpr_now')
create_makefile('grpc/grpc')