1 # UCW Library configuration system: parameters of the library
2 # (c) 2005--2010 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;
13 Test("CPU_PAGE_SIZE", "Determining page size", sub {
15 if (IsSet("CONFIG_DARWIN")) {
16 $p = `sysctl -n hw.pagesize`;
17 defined $p or Fail "sysctl hw.pagesize failed";
18 } elsif (IsSet("CONFIG_LINUX")) {
19 $p = `getconf PAGE_SIZE`;
20 defined $p or Fail "getconf PAGE_SIZE failed";
26 # Decide how will ucw/partmap.c work
27 Set("CONFIG_UCW_PARTMAP_IS_MMAP") if IsSet("CPU_64BIT_POINTERS");
29 # Option for ucw/mempool.c
30 Set("CONFIG_UCW_POOL_IS_MMAP");
32 # Guess optimal bit width of the radix-sorter
33 if (Get("CPU_ARCH") eq "default" || Get("CPU_ARCH") =~ /^i[345]86$/) {
34 # This should be safe everywhere
35 Set("CONFIG_UCW_RADIX_SORTER_BITS" => 10);
37 # Use this on modern CPU's
38 Set("CONFIG_UCW_RADIX_SORTER_BITS" => 12);
41 # Detect if thread-local storage is supported
42 if (Get("CONFIG_UCW_THREADS")) {
43 TestBool("CONFIG_UCW_TLS", "Checking if GCC supports thread-local storage", sub {
44 if (UCW::Configure::C::TestCompile("__thread", "__thread int i;\nint main(void) { return 0; }\n")) {
52 # Detect if we have the epoll() syscall
53 TestBool("CONFIG_UCW_EPOLL", "Checking for epoll", sub {
54 return UCW::Configure::C::TestCompile("epoll", <<'FINIS' ) ? 1 : 0;
55 #include <sys/epoll.h>
66 UCW::Configure::C::ConfigHeader("ucw/autoconf.h", [
67 # Excluded symbols (danger of collision)
68 '^CONFIG_DEBUG$' => 0,
73 '^(SHERLOCK|UCW)_VERSION(_|$)' => 1,
74 '^MAX_WORD_(BYTES|CHARS)$' => 1,
77 } if Get("CONFIG_INSTALL_API");
80 if (!IsSet("CONFIG_UCW_THREADS") || !IsSet("CONFIG_UCW_DIRECT_IO")) {
81 if (IsGiven("CONFIG_UCW_FB_DIRECT") && IsSet("CONFIG_UCW_FB_DIRECT")) {
82 if (!IsSet("CONFIG_UCW_THREADS")) {
83 Fail("CONFIG_UCW_FB_DIRECT needs CONFIG_UCW_THREADS");
85 Fail("CONFIG_UCW_FB_DIRECT needs CONFIG_UCW_DIRECT_IO");
88 UnSet("CONFIG_UCW_FB_DIRECT");