Add internal abstraction for POSIX Threads
[platform/upstream/libusb.git] / configure.ac
1 AC_INIT([libusb], [1.0.8])
2 AM_INIT_AUTOMAKE
3 AC_CONFIG_SRCDIR([libusb/core.c])
4 AC_CONFIG_MACRO_DIR([m4])
5 AM_CONFIG_HEADER([config.h])
6 m4_ifdef([AM_SILENT_RULES],[AM_SILENT_RULES([yes])])
7
8 AC_PREREQ([2.50])
9 AC_PROG_CC
10 AC_PROG_LIBTOOL
11 AC_C_INLINE
12 AM_PROG_CC_C_O
13 AC_DEFINE([_GNU_SOURCE], [], [Use GNU extensions])
14
15 AC_MSG_CHECKING([operating system])
16 case $host in
17 *-linux*)
18         AC_DEFINE(OS_LINUX, [], [Linux backend])
19         AC_SUBST(OS_LINUX)
20         AC_MSG_RESULT([Linux])
21         backend="linux"
22         AC_CHECK_LIB(rt, clock_gettime)
23         threads="posix"
24         THREAD_CFLAGS="-pthread"
25         AM_LDFLAGS=""
26         ;;
27 *-darwin*)
28         AC_DEFINE(OS_DARWIN, [], [Darwin backend])
29         AC_SUBST(OS_DARWIN)
30         AC_DEFINE(USBI_OS_HANDLES_TIMEOUT, [], [Backend handles timeout])
31         AC_MSG_RESULT([Darwin/MacOS X])
32         backend="darwin"
33         threads="posix"
34         THREAD_CFLAGS="-pthread"
35         AM_LDFLAGS="-Wl,-framework -Wl,IOKit -Wl,-framework -Wl,CoreFoundation -Wl,-prebind -no-undefined"
36         ;;
37 *)
38         AC_MSG_ERROR([unsupported operating system])
39 esac
40
41 AM_CONDITIONAL([OS_LINUX], [test "x$backend" == "xlinux"])
42 AM_CONDITIONAL([OS_DARWIN], [test "x$backend" == "xdarwin"])
43 AM_CONDITIONAL([THREADS_POSIX], [test "x$threads" == "xposix"])
44
45 # Library versioning
46 lt_major="0"
47 lt_revision="0"
48 lt_age="0"
49 AC_SUBST(lt_major)
50 AC_SUBST(lt_revision)
51 AC_SUBST(lt_age)
52
53 # timerfd
54 AC_CHECK_HEADER([sys/timerfd.h], [timerfd_h=1], [timerfd_h=0])
55 AC_ARG_ENABLE([timerfd],
56         [AS_HELP_STRING([--enable-timerfd],
57                 [use timerfd for timing (default auto)])],
58         [use_timerfd=$enableval], [use_timerfd='auto'])
59
60 if test "x$use_timerfd" = "xyes" -a "x$timerfd_h" = "x0"; then
61         AC_MSG_ERROR([timerfd header not available; glibc 2.9+ required])
62 fi
63
64 AC_CHECK_DECL([TFD_NONBLOCK], [tfd_hdr_ok=yes], [tfd_hdr_ok=no], [#include <sys/timerfd.h>])
65 if test "x$use_timerfd" = "xyes" -a "x$tfd_hdr_ok" = "xno"; then
66         AC_MSG_ERROR([timerfd header not usable; glibc 2.9+ required])
67 fi
68
69 AC_MSG_CHECKING([whether to use timerfd for timing])
70 if test "x$use_timerfd" = "xno"; then
71         AC_MSG_RESULT([no (disabled by user)])
72 else
73         if test "x$timerfd_h" = "x1" -a "x$tfd_hdr_ok" = "xyes"; then
74                 AC_MSG_RESULT([yes])
75                 AC_DEFINE(USBI_TIMERFD_AVAILABLE, [], [timerfd headers available])
76         else
77                 AC_MSG_RESULT([no (header not available)])
78         fi
79 fi
80
81 # Message logging
82 AC_ARG_ENABLE([log], [AS_HELP_STRING([--disable-log], [disable all logging])],
83         [log_enabled=$enableval],
84         [log_enabled='yes'])
85 if test "x$log_enabled" != "xno"; then
86         AC_DEFINE([ENABLE_LOGGING], 1, [Message logging])
87 fi
88
89 AC_ARG_ENABLE([debug-log], [AS_HELP_STRING([--enable-debug-log],
90         [enable debug logging (default n)])],
91         [debug_log_enabled=$enableval],
92         [debug_log_enabled='no'])
93 if test "x$debug_log_enabled" != "xno"; then
94         AC_DEFINE([ENABLE_DEBUG_LOGGING], 1, [Debug message logging])
95 fi
96
97 # Examples build
98 AC_ARG_ENABLE([examples-build], [AS_HELP_STRING([--enable-examples-build],
99         [build example applications (default n)])],
100         [build_examples=$enableval],
101         [build_examples='no'])
102 AM_CONDITIONAL([BUILD_EXAMPLES], [test "x$build_examples" != "xno"])
103
104 # Restore gnu89 inline semantics on gcc 4.3 and newer
105 saved_cflags="$CFLAGS"
106 CFLAGS="$CFLAGS -fgnu89-inline"
107 AC_COMPILE_IFELSE(AC_LANG_PROGRAM([]), inline_cflags="-fgnu89-inline", inline_cflags="")
108 CFLAGS="$saved_cflags"
109
110 # check for -fvisibility=hidden compiler support (GCC >= 3.4)
111 saved_cflags="$CFLAGS"
112 CFLAGS="$CFLAGS -fvisibility=hidden"
113 AC_COMPILE_IFELSE(AC_LANG_PROGRAM([]),
114         [VISIBILITY_CFLAGS="-fvisibility=hidden"
115          AC_DEFINE([API_EXPORTED], [__attribute__((visibility("default")))], [Default visibility]) ],
116         [ VISIBILITY_CFLAGS=""
117          AC_DEFINE([API_EXPORTED], [], [Default visibility]) ],
118         ])
119 CFLAGS="$saved_cflags"
120
121 # check for -Wno-pointer-sign compiler support (GCC >= 4)
122 saved_cflags="$CFLAGS"
123 CFLAGS="$CFLAGS -Wno-pointer-sign"
124 AC_COMPILE_IFELSE(AC_LANG_PROGRAM([]),
125         nopointersign_cflags="-Wno-pointer-sign", nopointersign_cflags="")
126 CFLAGS="$saved_cflags"
127
128 AC_SUBST([THREAD_CFLAGS])
129
130 AM_CFLAGS="-std=gnu99 $inline_cflags -Wall -Wundef -Wunused -Wstrict-prototypes -Werror-implicit-function-declaration $nopointersign_cflags -Wshadow"
131
132 AC_SUBST(VISIBILITY_CFLAGS)
133 AC_SUBST(AM_CFLAGS)
134 AC_SUBST(AM_LDFLAGS)
135
136 AC_CONFIG_FILES([libusb-1.0.pc] [Makefile] [libusb/Makefile] [examples/Makefile] [doc/Makefile] [doc/doxygen.cfg])
137 AC_OUTPUT
138