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 $p or Fail "getconf PAGE_SIZE failed";
31 # Decide how will ucw/partmap.c work
32 Set("CONFIG_UCW_PARTMAP_IS_MMAP") if IsSet("CPU_64BIT_POINTERS");
34 # Option for ucw/mempool.c
35 Set("CONFIG_UCW_POOL_IS_MMAP");
37 # Guess optimal bit width of the radix-sorter
38 Test("CONFIG_UCW_RADIX_SORTER_BITS", "Determining radix sorter bucket width", sub {
39 if (Get("CPU_AMD64")) {
40 # All amd64 CPUs have large enough L1 cache
43 # This should be safe everywhere
48 # Detect if thread-local storage is supported
49 if (Get("CONFIG_UCW_THREADS")) {
50 TestBool("CONFIG_UCW_TLS", "Checking if GCC supports thread-local storage", sub {
51 if (UCW::Configure::C::TestCompile("__thread", "__thread int i;\nint main(void) { return 0; }\n")) {
59 # Detect if we have the epoll() syscall
60 TestBool("CONFIG_UCW_EPOLL", "Checking for epoll", sub {
61 return UCW::Configure::C::TestCompile("epoll", <<'FINIS' ) ? 1 : 0;
62 #include <sys/epoll.h>
71 # Check if we want to use monotonic clock
72 TestBool("CONFIG_UCW_MONOTONIC_CLOCK", "Checking for monotonic clock", sub {
73 return Get("CONFIG_LINUX");
76 if (IsSet("CONFIG_DARWIN")) {
77 # Darwin does not support BSD regexes, fix up
78 if (!IsSet("CONFIG_UCW_POSIX_REGEX") && !IsSet("CONFIG_UCW_PCRE")) {
79 Set("CONFIG_UCW_POSIX_REGEX" => 1);
80 Warn "BSD regex library on Darwin isn't compatible, using POSIX regex.\n";
83 # Fill in some constants not found in the system header files
84 Set("SOL_TCP" => 6); # missing in /usr/include/netinet/tcp.h
85 if (IsGiven("CONFIG_UCW_DIRECT_IO") && IsSet("CONFIG_UCW_DIRECT_IO")) {
86 Fail("Direct I/O is not available on darwin");
88 UnSet("CONFIG_UCW_DIRECT_IO");
94 UCW::Configure::C::ConfigHeader("ucw/autoconf.h", [
98 '^(SHERLOCK|UCW)_VERSION(_|$)' => 1,
101 } if Get("CONFIG_INSTALL_API");
104 if (!IsSet("CONFIG_UCW_THREADS") || !IsSet("CONFIG_UCW_DIRECT_IO")) {
105 if (IsGiven("CONFIG_UCW_FB_DIRECT") && IsSet("CONFIG_UCW_FB_DIRECT")) {
106 if (!IsSet("CONFIG_UCW_THREADS")) {
107 Fail("CONFIG_UCW_FB_DIRECT needs CONFIG_UCW_THREADS");
109 Fail("CONFIG_UCW_FB_DIRECT needs CONFIG_UCW_DIRECT_IO");
112 UnSet("CONFIG_UCW_FB_DIRECT");