1 # UCW Library configuration system: parameters of the library
2 # (c) 2005--2008 Martin Mares <mj@ucw.cz>
3 # (c) 2006 Robert Spalek <robert@ucw.cz>
4 # (c) 2008 Michal Vaner <vorner@ucw.cz>
6 package UCW::Configure::LibUCW;
10 Test("CPU_PAGE_SIZE", "Determining page size", sub {
12 if (IsSet("CONFIG_DARWIN")) {
13 $p = `sysctl -n hw.pagesize`;
14 defined $p or Fail "sysctl hw.pagesize failed";
15 } elsif (IsSet("CONFIG_LINUX")) {
16 $p = `getconf PAGE_SIZE`;
17 defined $p or Fail "getconf PAGE_SIZE failed";
23 if (IsSet("CONFIG_LARGE_FILES") && IsSet("CONFIG_LINUX")) {
24 # Use 64-bit versions of file functions
28 # Decide how will ucw/partmap.c work
29 Set("PARTMAP_IS_MMAP") if IsSet("CPU_64BIT_POINTERS");
31 # Option for ucw/mempool.c
34 # Guess optimal bit width of the radix-sorter
35 if (Get("CPU_ARCH") eq "default" || Get("CPU_ARCH") =~ /^i[345]86$/) {
36 # This should be safe everywhere
37 Set("CONFIG_UCW_RADIX_SORTER_BITS" => 10);
39 # Use this on modern CPU's
40 Set("CONFIG_UCW_RADIX_SORTER_BITS" => 12);