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|
require 'mkmf'
dir_config("dbm")
if dblib = with_config("dbm-type", nil)
dblib = dblib.split(/[ ,]+/)
else
#dblib = %w(libc db db2 db1 db5 db4 db3 dbm gdbm gdbm_compat qdbm)
dblib = %w(gdbm gdbm_compat qdbm)
end
headers = {
"libc" => ["ndbm.h"], # 4.4BSD libc contains Berkeley DB 1.
"db" => ["db.h"],
"db1" => ["db1/ndbm.h", "db1.h", "ndbm.h"],
"db2" => ["db2/db.h", "db2.h", "db.h"],
"db3" => ["db3/db.h", "db3.h", "db.h"],
"db4" => ["db4/db.h", "db4.h", "db.h"],
"db5" => ["db5/db.h", "db5.h", "db.h"],
"dbm" => ["ndbm.h"], # traditional ndbm (4.3BSD)
"gdbm" => ["gdbm-ndbm.h", "ndbm.h", "gdbm/ndbm.h"], # gdbm until 1.8.0
"gdbm_compat" => ["gdbm-ndbm.h", "ndbm.h", "gdbm/ndbm.h"], # gdbm since 1.8.1
"qdbm" => ["relic.h", "qdbm/relic.h"],
}
class << headers
attr_accessor :found
attr_accessor :defs
end
headers.found = []
headers.defs = nil
def headers.db_check(db, hdr)
old_libs = $libs.dup
old_defs = $defs.dup
result = db_check2(db, hdr)
if !result
$libs = old_libs
$defs = old_defs
end
result
end
# BEGIN BACKPORTED FROM 2.0
class String
# Wraps a string in escaped quotes if it contains whitespace.
def quote
/\s/ =~ self ? "\"#{self}\"" : "#{self}"
end
# Generates a string used as cpp macro name.
def tr_cpp
strip.upcase.tr_s("^A-Z0-9_*", "_").tr_s("*", "P")
end
def funcall_style
/\)\z/ =~ self ? dup : "#{self}()"
end
def sans_arguments
self[/\A[^()]+/]
end
end
def rm_f(*files)
opt = (Hash === files.last ? [files.pop] : [])
FileUtils.rm_f(Dir[*files.flatten], *opt)
end
def try_func(func, libs, headers = nil, opt = "", &b)
headers = cpp_include(headers)
case func
when /^&/
decltype = proc {|x|"const volatile void *#{x}"}
when /\)$/
call = func
else
call = "#{func}()"
decltype = proc {|x| "void ((*#{x})())"}
end
if opt and !opt.empty?
[[:to_str], [:join, " "], [:to_s]].each do |meth, *args|
if opt.respond_to?(meth)
break opt = opt.send(meth, *args)
end
end
opt = "#{opt} #{libs}"
else
opt = libs
end
decltype && try_link(<<"SRC", opt, &b) or
#{headers}
/*top*/
#{MAIN_DOES_NOTHING}
extern int t(void);
int t(void) { #{decltype["volatile p"]}; p = (#{decltype[]})#{func}; return 0; }
SRC
call && try_link(<<"SRC", opt, &b)
#{headers}
/*top*/
#{MAIN_DOES_NOTHING}
extern int t(void);
int t(void) { #{call}; return 0; }
SRC
end
def try_var(var, headers = nil, opt = "", &b)
headers = cpp_include(headers)
try_compile(<<"SRC", opt, &b)
#{headers}
/*top*/
#{MAIN_DOES_NOTHING}
extern int t(void);
int t(void) { const volatile void *volatile p; p = &(&#{var})[0]; return 0; }
SRC
end
def have_library(lib, func = nil, headers = nil, opt = "", &b)
func = "main" if !func or func.empty?
lib = with_config(lib+'lib', lib)
checking_for checking_message(func.funcall_style, LIBARG%lib, opt) do
if COMMON_LIBS.include?(lib)
true
else
libs = append_library($libs, lib)
if try_func(func, libs, headers, opt, &b)
$libs = libs
true
else
false
end
end
end
end
def have_func(func, headers = nil, opt = "", &b)
checking_for checking_message(func.funcall_style, headers, opt) do
if try_func(func, $libs, headers, opt, &b)
$defs << "-DHAVE_#{func.sans_arguments.tr_cpp}"
true
else
false
end
end
end
def have_var(var, headers = nil, opt = "", &b)
checking_for checking_message(var, headers, opt) do
if try_var(var, headers, opt, &b)
$defs.push(format("-DHAVE_%s", var.tr_cpp))
true
else
false
end
end
end
def try_cpp(src, opt="", *opts, &b)
try_do(src, cpp_command(CPPOUTFILE, opt), *opts, &b)
ensure
rm_f "conftest*"
end
alias :try_header :try_cpp
def have_header(header, preheaders = nil, opt = "", &b)
checking_for header do
if try_header(cpp_include(preheaders)+cpp_include(header), opt, &b)
$defs.push(format("-DHAVE_%s", header.tr_cpp))
true
else
false
end
end
end
def convertible_int(type, headers = nil, opts = nil, &b)
type, macname = *type
checking_for("convertible type of #{type}", STRING_OR_FAILED_FORMAT) do
if UNIVERSAL_INTS.include?(type)
type
else
typedef, member, prelude = typedef_expr(type, headers, &b)
if member
prelude << "static rbcv_typedef_ rbcv_var;"
compat = UNIVERSAL_INTS.find {|t|
try_static_assert("sizeof(rbcv_var.#{member}) == sizeof(#{t})", [prelude], opts, &b)
}
else
next unless signed = try_signedness(typedef, member, [prelude])
u = "unsigned " if signed > 0
prelude << "extern rbcv_typedef_ foo();"
compat = UNIVERSAL_INTS.find {|t|
try_compile([prelude, "extern #{u}#{t} foo();"].join("\n"), opts, :werror=>true, &b)
}
end
if compat
macname ||= type.sub(/_(?=t\z)/, '').tr_cpp
conv = (compat == "long long" ? "LL" : compat.upcase)
compat = "#{u}#{compat}"
typename = type.tr_cpp
$defs.push(format("-DSIZEOF_%s=SIZEOF_%s", typename, compat.tr_cpp))
$defs.push(format("-DTYPEOF_%s=%s", typename, compat.quote))
$defs.push(format("-DPRI_%s_PREFIX=PRI_%s_PREFIX", macname, conv))
conv = (u ? "U" : "") + conv
$defs.push(format("-D%s2NUM=%s2NUM", macname, conv))
$defs.push(format("-DNUM2%s=NUM2%s", macname, conv))
compat
end
end
end
end
# END BACKPORTED FROM 2.0
def have_libvar(var, headers = nil, opt = "", &b)
checking_for checking_message([*var].compact.join(' '), headers, opt) do
try_libvar(var, headers, opt, &b)
end
end
def try_libvar(var, headers = nil, opt = "", &b)
var, type = *var
if try_link(<<"SRC", opt, &b)
#{cpp_include(headers)}
/*top*/
int main(int argc, char *argv[]) {
typedef #{type || 'int'} conftest_type;
extern conftest_type #{var};
conftest_type *conftest_var = &#{var};
return 0;
}
SRC
$defs.push(format("-DHAVE_LIBVAR_%s", var.tr_cpp))
true
else
false
end
end
def headers.db_check2(db, hdr)
hsearch = nil
case db
when /^db[2-5]?$/
hsearch = "-DDB_DBM_HSEARCH"
when "gdbm_compat"
have_library("gdbm") or return false
end
if have_type("DBM", hdr, hsearch) and
(db == 'libc' ? have_func('dbm_open("", 0, 0)', hdr, hsearch) :
have_library(db, 'dbm_open("", 0, 0)', hdr, hsearch)) and
have_func('dbm_clearerr((DBM *)0)', hdr, hsearch)
case db
when /\Adb\d?\z/
have_func('db_version((int *)0, (int *)0, (int *)0)', hdr, hsearch)
when /\Agdbm/
have_var("gdbm_version", hdr, hsearch)
# gdbm_version is not declared by ndbm.h until gdbm 1.8.3.
# We can't include ndbm.h and gdbm.h because they both define datum type.
# ndbm.h includes gdbm.h and gdbm_version is declared since gdbm 1.9.
have_libvar(["gdbm_version", "char *"], hdr, hsearch)
when /\Aqdbm\z/
have_var("dpversion", hdr, hsearch)
end
if hsearch
$defs << hsearch
@defs = hsearch
end
$defs << '-DDBM_HDR="<'+hdr+'>"'
@found << hdr
true
else
false
end
end
if dblib.any? {|db| headers.fetch(db, ["ndbm.h"]).any? {|hdr| headers.db_check(db, hdr) } }
have_header("cdefs.h")
have_header("sys/cdefs.h")
have_func("dbm_pagfno((DBM *)0)", headers.found, headers.defs)
have_func("dbm_dirfno((DBM *)0)", headers.found, headers.defs)
convertible_int("datum.dsize", headers.found, headers.defs)
create_makefile("dbm")
end
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