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;
12 # Turn on debugging support if CONFIG_DEBUG
13 if (Get("CONFIG_DEBUG")) {
14 Set("CONFIG_UCW_DEBUG");
18 Test("CPU_PAGE_SIZE", "Determining page size", sub {
20 if (IsSet("CONFIG_DARWIN")) {
21 $p = `sysctl -n hw.pagesize`;
22 defined $p or Fail "sysctl hw.pagesize failed";
23 } elsif (IsSet("CONFIG_LINUX")) {
24 $p = `getconf PAGE_SIZE`;
25 defined $p or Fail "getconf PAGE_SIZE failed";
31 # Decide how will ucw/partmap.c work
32 Set("CONFIG_UCW_PARTMAP_IS_MMAP") if IsSet("CPU_64BIT_POINTERS");
34 # Option for ucw/mempool.c
35 Set("CONFIG_UCW_POOL_IS_MMAP");
37 # Guess optimal bit width of the radix-sorter
38 if (Get("CPU_ARCH") eq "default" || Get("CPU_ARCH") =~ /^i[345]86$/) {
39 # This should be safe everywhere
40 Set("CONFIG_UCW_RADIX_SORTER_BITS" => 10);
42 # Use this on modern CPU's
43 Set("CONFIG_UCW_RADIX_SORTER_BITS" => 12);
46 # Detect if thread-local storage is supported
47 if (Get("CONFIG_UCW_THREADS")) {
48 TestBool("CONFIG_UCW_TLS", "Checking if GCC supports thread-local storage", sub {
49 if (UCW::Configure::C::TestCompile("__thread", "__thread int i;\nint main(void) { return 0; }\n")) {
57 # Detect if we have the epoll() syscall
58 TestBool("CONFIG_UCW_EPOLL", "Checking for epoll", sub {
59 return UCW::Configure::C::TestCompile("epoll", <<'FINIS' ) ? 1 : 0;
60 #include <sys/epoll.h>
69 # Check if we want to use monotonic clock
70 TestBool("CONFIG_UCW_MONOTONIC_CLOCK", "Checking for monotonic clock", sub {
71 return Get("CONFIG_LINUX");
74 if (IsSet("CONFIG_DARWIN")) {
75 # Darwin does not support BSD regexes, fix up
76 if (!IsSet("CONFIG_UCW_POSIX_REGEX") && !IsSet("CONFIG_UCW_PCRE")) {
77 Set("CONFIG_UCW_POSIX_REGEX" => 1);
78 Warn "BSD regex library on Darwin isn't compatible, using POSIX regex.\n";
81 # Fill in some constants not found in the system header files
82 Set("SOL_TCP" => 6); # missing in /usr/include/netinet/tcp.h
83 if (IsGiven("CONFIG_UCW_DIRECT_IO") && IsSet("CONFIG_UCW_DIRECT_IO")) {
84 Fail("Direct I/O is not available on darwin");
86 UnSet("CONFIG_UCW_DIRECT_IO");
92 UCW::Configure::C::ConfigHeader("ucw/autoconf.h", [
96 '^(SHERLOCK|UCW)_VERSION(_|$)' => 1,
99 } if Get("CONFIG_INSTALL_API");
102 if (!IsSet("CONFIG_UCW_THREADS") || !IsSet("CONFIG_UCW_DIRECT_IO")) {
103 if (IsGiven("CONFIG_UCW_FB_DIRECT") && IsSet("CONFIG_UCW_FB_DIRECT")) {
104 if (!IsSet("CONFIG_UCW_THREADS")) {
105 Fail("CONFIG_UCW_FB_DIRECT needs CONFIG_UCW_THREADS");
107 Fail("CONFIG_UCW_FB_DIRECT needs CONFIG_UCW_DIRECT_IO");
110 UnSet("CONFIG_UCW_FB_DIRECT");