1 AC_INIT([libusb], [1.0.8])
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])])
13 AC_DEFINE([_GNU_SOURCE], [], [Use GNU extensions])
15 AC_MSG_CHECKING([operating system])
18 AC_DEFINE(OS_LINUX, [], [Linux backend])
20 AC_MSG_RESULT([Linux])
22 AC_CHECK_LIB(rt, clock_gettime)
24 THREAD_CFLAGS="-pthread"
28 AC_DEFINE(OS_DARWIN, [], [Darwin backend])
30 AC_DEFINE(USBI_OS_HANDLES_TIMEOUT, [], [Backend handles timeout])
31 AC_MSG_RESULT([Darwin/MacOS X])
34 THREAD_CFLAGS="-pthread"
35 AM_LDFLAGS="-Wl,-framework -Wl,IOKit -Wl,-framework -Wl,CoreFoundation -Wl,-prebind -no-undefined"
38 AC_MSG_ERROR([unsupported operating system])
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$threads" == "xposix"])
54 AC_CHECK_HEADER([sys/timerfd.h], [timerfd_h=1], [timerfd_h=0])
55 AC_ARG_ENABLE([timerfd],
56 [AS_HELP_STRING([--enable-timerfd],
57 [use timerfd for timing (default auto)])],
58 [use_timerfd=$enableval], [use_timerfd='auto'])
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])
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])
69 AC_MSG_CHECKING([whether to use timerfd for timing])
70 if test "x$use_timerfd" = "xno"; then
71 AC_MSG_RESULT([no (disabled by user)])
73 if test "x$timerfd_h" = "x1" -a "x$tfd_hdr_ok" = "xyes"; then
75 AC_DEFINE(USBI_TIMERFD_AVAILABLE, [], [timerfd headers available])
77 AC_MSG_RESULT([no (header not available)])
82 AC_ARG_ENABLE([log], [AS_HELP_STRING([--disable-log], [disable all logging])],
83 [log_enabled=$enableval],
85 if test "x$log_enabled" != "xno"; then
86 AC_DEFINE([ENABLE_LOGGING], 1, [Message logging])
89 AC_ARG_ENABLE([debug-log], [AS_HELP_STRING([--enable-debug-log],
90 [enable debug logging (default n)])],
91 [debug_log_enabled=$enableval],
92 [debug_log_enabled='no'])
93 if test "x$debug_log_enabled" != "xno"; then
94 AC_DEFINE([ENABLE_DEBUG_LOGGING], 1, [Debug message logging])
98 AC_ARG_ENABLE([examples-build], [AS_HELP_STRING([--enable-examples-build],
99 [build example applications (default n)])],
100 [build_examples=$enableval],
101 [build_examples='no'])
102 AM_CONDITIONAL([BUILD_EXAMPLES], [test "x$build_examples" != "xno"])
104 # Restore gnu89 inline semantics on gcc 4.3 and newer
105 saved_cflags="$CFLAGS"
106 CFLAGS="$CFLAGS -fgnu89-inline"
107 AC_COMPILE_IFELSE(AC_LANG_PROGRAM([]), inline_cflags="-fgnu89-inline", inline_cflags="")
108 CFLAGS="$saved_cflags"
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]) ],
119 CFLAGS="$saved_cflags"
121 # check for -Wno-pointer-sign compiler support (GCC >= 4)
122 saved_cflags="$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"
128 AC_SUBST([THREAD_CFLAGS])
130 AM_CFLAGS="-std=gnu99 $inline_cflags -Wall -Wundef -Wunused -Wstrict-prototypes -Werror-implicit-function-declaration $nopointersign_cflags -Wshadow"
132 AC_SUBST(VISIBILITY_CFLAGS)
136 AC_CONFIG_FILES([libusb-1.0.pc] [Makefile] [libusb/Makefile] [examples/Makefile] [doc/Makefile] [doc/doxygen.cfg])