require 'mkmf'

# If your MySQL is not installed in C:\Program Files\Mysql\Mysql Server 4.1
# change this to match your system. I used the 8.3 names to get rid of spaces.
mysql_dir = "c:\\progra~1\\mysql\\MYSQLS~1.1"

# Check the 8.3 pathname below and make certain it's the 
# same on your system. This is setup to use VC6. If you 
# want to use VC7, change it to the 8.3 for VC7
vc_dir = "c:\\progra~1\\MIAF9D~1\\vc98"
# vc_dir = "c:\\progra~1\\MICROS~2.NET\\vc7"

###### You should not need to change anything below this line ######

inc, lib = dir_config("mysql", mysql_dir)

$LIBPATH[0] = "#{mysql_dir}\\lib\\opt"

pinc, plib = dir_config("vc", vc_dir)

if vc_dir =~ /vc7/i
  dir_config("sdk", vc_dir + "\\PLATFO~1")
end

puts $LIBPATH.inspect

have_library("libmysql")
have_func("mysql_ssl_set")

if have_header('mysql.h') then
	src = "#include <errmsg.h>\n#include <mysqld_error.h>\n"
elsif have_header('mysql/mysql.h') then
	src = "#include <mysql/errmsg.h>\n#include <mysql/mysqld_error.h>\n"
else
	exit 1
end

src += "int main() {}"

File::open("conftest.c", "w") do |f|
  f.puts src
end
if defined? cpp_command then
  cpp = Config::expand(cpp_command(''))
else
  cpp = Config::expand sprintf(CPP, $CPPFLAGS, $CFLAGS, '')
end

unless system "#{cpp} > confout" then
  exit 1
end
File::unlink "conftest.c"

error_syms = []
IO::foreach('confout') do |l|
  next unless l =~ /errmsg\.h|mysqld_error\.h/
  fn = l.split(/\"/)[1]
  IO::foreach(fn) do |m|
    if m =~ /^#define\s+([CE]R_[0-9A-Z_]+)/ then
      error_syms << $1
    end
  end
end
File::unlink 'confout'
error_syms.uniq!

newf = File::open('mysql.c', 'w')
IO::foreach('mysql.c.in') do |l|
  newf.puts l
  if l =~ /\/\* Mysql::Error constant \*\// then
    error_syms.each do |s|
      newf.puts "    rb_define_const(eMysql, \"#{s}\", INT2NUM(#{s}));"
    end
  end
end

create_makefile("mysql")