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])
17 AC_MSG_CHECKING([operating system])
20 AC_DEFINE(OS_LINUX, [], [Linux backend])
22 AC_MSG_RESULT([Linux])
24 AC_CHECK_LIB(rt, clock_gettime)
26 THREAD_CFLAGS="-pthread"
30 AC_DEFINE(OS_DARWIN, [], [Darwin backend])
32 AC_DEFINE(USBI_OS_HANDLES_TIMEOUT, [], [Backend handles timeout])
33 AC_MSG_RESULT([Darwin/MacOS X])
36 THREAD_CFLAGS="-pthread"
37 AM_LDFLAGS="-Wl,-framework -Wl,IOKit -Wl,-framework -Wl,CoreFoundation -Wl,-prebind -no-undefined"
40 AC_MSG_ERROR([unsupported operating system])
43 AM_CONDITIONAL([OS_LINUX], [test "x$backend" = "xlinux"])
44 AM_CONDITIONAL([OS_DARWIN], [test "x$backend" = "xdarwin"])
45 AM_CONDITIONAL([THREADS_POSIX], [test "x$threads" = "xposix"])
56 AC_CHECK_HEADER([sys/timerfd.h], [timerfd_h=1], [timerfd_h=0])
57 AC_ARG_ENABLE([timerfd],
58 [AS_HELP_STRING([--enable-timerfd],
59 [use timerfd for timing (default auto)])],
60 [use_timerfd=$enableval], [use_timerfd='auto'])
62 if test "x$use_timerfd" = "xyes" -a "x$timerfd_h" = "x0"; then
63 AC_MSG_ERROR([timerfd header not available; glibc 2.9+ required])
66 AC_CHECK_DECL([TFD_NONBLOCK], [tfd_hdr_ok=yes], [tfd_hdr_ok=no], [#include <sys/timerfd.h>])
67 if test "x$use_timerfd" = "xyes" -a "x$tfd_hdr_ok" = "xno"; then
68 AC_MSG_ERROR([timerfd header not usable; glibc 2.9+ required])
71 AC_MSG_CHECKING([whether to use timerfd for timing])
72 if test "x$use_timerfd" = "xno"; then
73 AC_MSG_RESULT([no (disabled by user)])
75 if test "x$timerfd_h" = "x1" -a "x$tfd_hdr_ok" = "xyes"; then
77 AC_DEFINE(USBI_TIMERFD_AVAILABLE, [], [timerfd headers available])
79 AC_MSG_RESULT([no (header not available)])
84 AC_ARG_ENABLE([log], [AS_HELP_STRING([--disable-log], [disable all logging])],
85 [log_enabled=$enableval],
87 if test "x$log_enabled" != "xno"; then
88 AC_DEFINE([ENABLE_LOGGING], 1, [Message logging])
91 AC_ARG_ENABLE([debug-log], [AS_HELP_STRING([--enable-debug-log],
92 [enable debug logging (default n)])],
93 [debug_log_enabled=$enableval],
94 [debug_log_enabled='no'])
95 if test "x$debug_log_enabled" != "xno"; then
96 AC_DEFINE([ENABLE_DEBUG_LOGGING], 1, [Debug message logging])
100 AC_ARG_ENABLE([examples-build], [AS_HELP_STRING([--enable-examples-build],
101 [build example applications (default n)])],
102 [build_examples=$enableval],
103 [build_examples='no'])
104 AM_CONDITIONAL([BUILD_EXAMPLES], [test "x$build_examples" != "xno"])
106 # Restore gnu89 inline semantics on gcc 4.3 and newer
107 saved_cflags="$CFLAGS"
108 CFLAGS="$CFLAGS -fgnu89-inline"
109 AC_COMPILE_IFELSE(AC_LANG_PROGRAM([]), inline_cflags="-fgnu89-inline", inline_cflags="")
110 CFLAGS="$saved_cflags"
112 # check for -fvisibility=hidden compiler support (GCC >= 3.4)
113 saved_cflags="$CFLAGS"
114 CFLAGS="$CFLAGS -fvisibility=hidden"
115 AC_COMPILE_IFELSE(AC_LANG_PROGRAM([]),
116 [VISIBILITY_CFLAGS="-fvisibility=hidden"
117 AC_DEFINE([API_EXPORTED], [__attribute__((visibility("default")))], [Default visibility]) ],
118 [ VISIBILITY_CFLAGS=""
119 AC_DEFINE([API_EXPORTED], [], [Default visibility]) ],
121 CFLAGS="$saved_cflags"
123 # check for -Wno-pointer-sign compiler support (GCC >= 4)
124 saved_cflags="$CFLAGS"
125 CFLAGS="$CFLAGS -Wno-pointer-sign"
126 AC_COMPILE_IFELSE(AC_LANG_PROGRAM([]),
127 nopointersign_cflags="-Wno-pointer-sign", nopointersign_cflags="")
128 CFLAGS="$saved_cflags"
130 # sigaction not available on MinGW
131 AC_CHECK_FUNC([sigaction], [have_sigaction=yes], [have_sigaction=no])
132 AM_CONDITIONAL([HAVE_SIGACTION], [test "x$have_sigaction" = "xyes"])
134 # headers not available on all platforms but required on others
135 AC_CHECK_HEADERS([sys/time.h])
137 AC_SUBST([THREAD_CFLAGS])
139 AM_CFLAGS="-std=gnu99 $inline_cflags -Wall -Wundef -Wunused -Wstrict-prototypes -Werror-implicit-function-declaration $nopointersign_cflags -Wshadow"
141 AC_SUBST(VISIBILITY_CFLAGS)
145 AC_CONFIG_FILES([libusb-1.0.pc] [Makefile] [libusb/Makefile] [examples/Makefile] [doc/Makefile] [doc/doxygen.cfg])