1 m4_define(LIBUSB_MAJOR, [1])
2 m4_define(LIBUSB_MINOR, [0])
3 m4_define(LIBUSB_MICRO, [8])
5 AC_INIT([libusb], LIBUSB_MAJOR.LIBUSB_MINOR.LIBUSB_MICRO, [libusb-devel@lists.sourceforge.net], [libusb], [http://www.libusb.org/])
7 AC_SUBST([LIBUSB_VERSION_MAJOR], [LIBUSB_MAJOR])
8 AC_SUBST([LIBUSB_VERSION_MINOR], [LIBUSB_MINOR])
9 AC_SUBST([LIBUSB_VERSION_MICRO], [LIBUSB_MICRO])
12 # These numbers should be tweaked on every release. Read carefully:
13 # http://www.gnu.org/software/libtool/manual/html_node/Updating-version-info.html
14 # http://sourceware.org/autobook/autobook/autobook_91.html
25 AC_CONFIG_SRCDIR([libusb/core.c])
26 AC_CONFIG_MACRO_DIR([m4])
27 AM_CONFIG_HEADER([config.h])
28 m4_ifdef([AM_SILENT_RULES],[AM_SILENT_RULES([yes])])
35 AC_DEFINE([_GNU_SOURCE], 1, [Use GNU extensions])
37 AC_MSG_CHECKING([operating system])
40 AC_DEFINE(OS_LINUX, 1, [Linux backend])
42 AC_MSG_RESULT([Linux])
44 AC_CHECK_LIB(rt, clock_gettime, PC_LIBS_PRIVATE="-lrt")
46 THREAD_CFLAGS="-pthread"
47 PC_LIBS_PRIVATE="${PC_LIBS_PRIVATE} -pthread"
48 AC_CHECK_HEADERS([poll.h])
49 AC_DEFINE([POLL_NFDS_TYPE],[nfds_t],[type of second poll() argument])
52 AC_DEFINE(OS_DARWIN, 1, [Darwin backend])
54 AC_MSG_RESULT([Darwin/Mac OS X])
57 PC_LIBS_PRIVATE="-Wl,-framework,IOKit -Wl,-framework,CoreFoundation -Wl,-prebind -no-undefined"
58 AC_CHECK_HEADERS([poll.h])
59 AC_CHECK_TYPE([nfds_t],
60 [AC_DEFINE([POLL_NFDS_TYPE],[nfds_t],[type of second poll() argument])],
61 [AC_DEFINE([POLL_NFDS_TYPE],[unsigned int],[type of second poll() argument])],
65 AC_DEFINE(OS_WINDOWS, 1, [Windows backend])
67 AC_MSG_RESULT([Windows])
69 PC_LIBS_PRIVATE="-lsetupapi -lole32 -ladvapi32"
70 AM_LDFLAGS="-no-undefined -avoid-version --add-stdcall-alias"
71 AC_CHECK_TOOL(RC, windres, no)
72 AC_DEFINE([POLL_NFDS_TYPE],[unsigned int],[type of second poll() argument])
75 AC_DEFINE(OS_WINDOWS, 1, [Windows backend])
77 AC_MSG_RESULT([Cygwin (using Windows backend)])
80 PC_LIBS_PRIVATE="-lsetupapi -lole32 -ladvapi32"
81 AM_LDFLAGS="-no-undefined -avoid-version"
82 AC_CHECK_TOOL(RC, windres, no)
83 AC_DEFINE([POLL_NFDS_TYPE],[unsigned int],[type of second poll() argument])
86 AC_MSG_ERROR([unsupported operating system])
88 AC_SUBST(THREAD_CFLAGS)
89 AC_SUBST(PC_LIBS_PRIVATE)
90 LIBS="${LIBS} ${PC_LIBS_PRIVATE}"
92 AM_CONDITIONAL(OS_LINUX, test "x$backend" = xlinux)
93 AM_CONDITIONAL(OS_DARWIN, test "x$backend" = xdarwin)
94 AM_CONDITIONAL(OS_WINDOWS, test "x$backend" = xwindows)
95 AM_CONDITIONAL(THREADS_POSIX, test "x$threads" = xposix)
96 if test "$threads" = posix; then
97 AC_DEFINE(THREADS_POSIX, 1, [Use POSIX Threads])
101 AC_CHECK_HEADER([sys/timerfd.h], [timerfd_h=1], [timerfd_h=0])
102 AC_ARG_ENABLE([timerfd],
103 [AS_HELP_STRING([--enable-timerfd],
104 [use timerfd for timing (default auto)])],
105 [use_timerfd=$enableval], [use_timerfd='auto'])
107 if test "x$use_timerfd" = "xyes" -a "x$timerfd_h" = "x0"; then
108 AC_MSG_ERROR([timerfd header not available; glibc 2.9+ required])
111 AC_CHECK_DECL([TFD_NONBLOCK], [tfd_hdr_ok=yes], [tfd_hdr_ok=no], [#include <sys/timerfd.h>])
112 if test "x$use_timerfd" = "xyes" -a "x$tfd_hdr_ok" = "xno"; then
113 AC_MSG_ERROR([timerfd header not usable; glibc 2.9+ required])
116 AC_MSG_CHECKING([whether to use timerfd for timing])
117 if test "x$use_timerfd" = "xno"; then
118 AC_MSG_RESULT([no (disabled by user)])
120 if test "x$timerfd_h" = "x1" -a "x$tfd_hdr_ok" = "xyes"; then
122 AC_DEFINE(USBI_TIMERFD_AVAILABLE, 1, [timerfd headers available])
124 AC_MSG_RESULT([no (header not available)])
128 AC_CHECK_TYPES(struct timespec)
131 AC_ARG_ENABLE([log], [AS_HELP_STRING([--disable-log], [disable all logging])],
132 [log_enabled=$enableval],
134 if test "x$log_enabled" != "xno"; then
135 AC_DEFINE([ENABLE_LOGGING], 1, [Message logging])
138 AC_ARG_ENABLE([debug-log], [AS_HELP_STRING([--enable-debug-log],
139 [enable debug logging (default n)])],
140 [debug_log_enabled=$enableval],
141 [debug_log_enabled='no'])
142 if test "x$debug_log_enabled" != "xno"; then
143 AC_DEFINE([ENABLE_DEBUG_LOGGING], 1, [Debug message logging])
147 AC_ARG_ENABLE([examples-build], [AS_HELP_STRING([--enable-examples-build],
148 [build example applications (default n)])],
149 [build_examples=$enableval],
150 [build_examples='no'])
151 AM_CONDITIONAL([BUILD_EXAMPLES], [test "x$build_examples" != "xno"])
153 # Restore gnu89 inline semantics on gcc 4.3 and newer
154 saved_cflags="$CFLAGS"
155 CFLAGS="$CFLAGS -fgnu89-inline"
156 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([])], inline_cflags="-fgnu89-inline", inline_cflags="")
157 CFLAGS="$saved_cflags"
159 # check for -fvisibility=hidden compiler support (GCC >= 3.4)
160 saved_cflags="$CFLAGS"
161 # -Werror required for cygwin
162 CFLAGS="$CFLAGS -Werror -fvisibility=hidden"
163 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([])],
164 [VISIBILITY_CFLAGS="-fvisibility=hidden"
165 AC_DEFINE([DEFAULT_VISIBILITY], [__attribute__((visibility("default")))], [Default visibility]) ],
166 [ VISIBILITY_CFLAGS=""
167 AC_DEFINE([DEFAULT_VISIBILITY], [], [Default visibility]) ],
169 CFLAGS="$saved_cflags"
171 # check for -Wno-pointer-sign compiler support (GCC >= 4)
172 saved_cflags="$CFLAGS"
173 CFLAGS="$CFLAGS -Wno-pointer-sign"
174 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([])],
175 nopointersign_cflags="-Wno-pointer-sign", nopointersign_cflags="")
176 CFLAGS="$saved_cflags"
178 # sigaction not available on MinGW
179 AC_CHECK_FUNC([sigaction], [have_sigaction=yes], [have_sigaction=no])
180 AM_CONDITIONAL([HAVE_SIGACTION], [test "x$have_sigaction" = "xyes"])
182 # headers not available on all platforms but required on others
183 AC_CHECK_HEADERS([sys/time.h])
185 AM_CFLAGS="-std=gnu99 $inline_cflags -Wall -Wundef -Wunused -Wstrict-prototypes -Werror-implicit-function-declaration $nopointersign_cflags -Wshadow"
187 AC_SUBST(VISIBILITY_CFLAGS)
191 AC_CONFIG_FILES([libusb-1.0.pc] [Makefile] [libusb/Makefile] [libusb/libusb-1.0.rc] [examples/Makefile] [doc/Makefile] [doc/doxygen.cfg])