1 dnl These m4 macros are whitespace sensitive and break if moved around much.
2 m4_define([LU_VERSION_H], m4_include([libusb/version.h]))
3 m4_define([LU_DEFINE_VERSION_ATOM],
4 [m4_define([$1], m4_bregexp(LU_VERSION_H,
5 [^#define\s*$1\s*\([0-9]*\).*], [\1]))])
6 m4_define([LU_DEFINE_VERSION_RC_ATOM],
7 [m4_define([$1], m4_bregexp(LU_VERSION_H,
8 [^#define\s*$1\s*"\(-rc[0-9]*\)".*], [\1]))])
9 dnl The m4_bregexp() returns (only) the numbers following the #define named
10 dnl in the first macro parameter. m4_define() then defines the name for use
13 LU_DEFINE_VERSION_ATOM([LIBUSB_MAJOR])
14 LU_DEFINE_VERSION_ATOM([LIBUSB_MINOR])
15 LU_DEFINE_VERSION_ATOM([LIBUSB_MICRO])
16 LU_DEFINE_VERSION_RC_ATOM([LIBUSB_RC])
18 AC_INIT([libusb], LIBUSB_MAJOR[.]LIBUSB_MINOR[.]LIBUSB_MICRO[]LIBUSB_RC, [libusb-devel@lists.sourceforge.net], [libusb], [http://www.libusb.org/])
21 # These numbers should be tweaked on every release. Read carefully:
22 # http://www.gnu.org/software/libtool/manual/html_node/Updating-version-info.html
23 # http://sourceware.org/autobook/autobook/autobook_91.html
27 LTLDFLAGS="-version-info ${lt_current}:${lt_revision}:${lt_age}"
32 AC_CONFIG_SRCDIR([libusb/core.c])
33 AC_CONFIG_MACRO_DIR([m4])
34 AM_CONFIG_HEADER([config.h])
35 m4_ifdef([AM_SILENT_RULES],[AM_SILENT_RULES([yes])])
42 AC_DEFINE([_GNU_SOURCE], 1, [Use GNU extensions])
44 LTLDFLAGS="${LTLDFLAGS} -no-undefined"
46 AC_MSG_CHECKING([operating system])
49 AC_DEFINE(OS_LINUX, 1, [Linux backend])
51 AC_MSG_RESULT([Linux])
53 AC_CHECK_LIB(rt, clock_gettime, PC_LIBS_PRIVATE="-lrt")
55 THREAD_CFLAGS="-pthread"
56 PC_LIBS_PRIVATE="${PC_LIBS_PRIVATE} -pthread"
57 AC_CHECK_HEADERS([poll.h])
58 AC_DEFINE([POLL_NFDS_TYPE],[nfds_t],[type of second poll() argument])
61 AC_DEFINE(OS_DARWIN, 1, [Darwin backend])
63 AC_MSG_RESULT([Darwin/Mac OS X])
67 PC_LIBS_PRIVATE="-Wl,-framework,IOKit -Wl,-framework,CoreFoundation"
68 LTLDFLAGS="${LTLDFLAGS} -Wl,-prebind"
69 AC_CHECK_HEADERS([poll.h])
70 AC_CHECK_TYPE([nfds_t],
71 [AC_DEFINE([POLL_NFDS_TYPE],[nfds_t],[type of second poll() argument])],
72 [AC_DEFINE([POLL_NFDS_TYPE],[unsigned int],[type of second poll() argument])],
76 AC_MSG_RESULT([Windows])
80 AC_MSG_RESULT([Cygwin (using Windows backend)])
85 AC_MSG_ERROR([unsupported operating system])
87 if test "$backend" = windows; then
88 AC_DEFINE(OS_WINDOWS, 1, [Windows backend])
91 LTLDFLAGS="${LTLDFLAGS} -avoid-version -Wl,--add-stdcall-alias"
92 AC_CHECK_TOOL(RC, windres, no)
93 AC_DEFINE([POLL_NFDS_TYPE],[unsigned int],[type of second poll() argument])
95 AC_SUBST(THREAD_CFLAGS)
96 AC_SUBST(PC_LIBS_PRIVATE)
97 LIBS="${LIBS} ${PC_LIBS_PRIVATE}"
99 AM_CONDITIONAL(OS_LINUX, test "x$backend" = xlinux)
100 AM_CONDITIONAL(OS_DARWIN, test "x$backend" = xdarwin)
101 AM_CONDITIONAL(OS_WINDOWS, test "x$backend" = xwindows)
102 AM_CONDITIONAL(THREADS_POSIX, test "x$threads" = xposix)
103 if test "$threads" = posix; then
104 AC_DEFINE(THREADS_POSIX, 1, [Use POSIX Threads])
108 AC_CHECK_HEADER([sys/timerfd.h], [timerfd_h=1], [timerfd_h=0])
109 AC_ARG_ENABLE([timerfd],
110 [AS_HELP_STRING([--enable-timerfd],
111 [use timerfd for timing (default auto)])],
112 [use_timerfd=$enableval], [use_timerfd='auto'])
114 if test "x$use_timerfd" = "xyes" -a "x$timerfd_h" = "x0"; then
115 AC_MSG_ERROR([timerfd header not available; glibc 2.9+ required])
118 AC_CHECK_DECL([TFD_NONBLOCK], [tfd_hdr_ok=yes], [tfd_hdr_ok=no], [#include <sys/timerfd.h>])
119 if test "x$use_timerfd" = "xyes" -a "x$tfd_hdr_ok" = "xno"; then
120 AC_MSG_ERROR([timerfd header not usable; glibc 2.9+ required])
123 AC_MSG_CHECKING([whether to use timerfd for timing])
124 if test "x$use_timerfd" = "xno"; then
125 AC_MSG_RESULT([no (disabled by user)])
127 if test "x$timerfd_h" = "x1" -a "x$tfd_hdr_ok" = "xyes"; then
129 AC_DEFINE(USBI_TIMERFD_AVAILABLE, 1, [timerfd headers available])
131 AC_MSG_RESULT([no (header not available)])
135 AC_CHECK_TYPES(struct timespec)
138 AC_ARG_ENABLE([log], [AS_HELP_STRING([--disable-log], [disable all logging])],
139 [log_enabled=$enableval],
141 if test "x$log_enabled" != "xno"; then
142 AC_DEFINE([ENABLE_LOGGING], 1, [Message logging])
145 AC_ARG_ENABLE([debug-log], [AS_HELP_STRING([--enable-debug-log],
146 [enable debug logging (default n)])],
147 [debug_log_enabled=$enableval],
148 [debug_log_enabled='no'])
149 if test "x$debug_log_enabled" != "xno"; then
150 AC_DEFINE([ENABLE_DEBUG_LOGGING], 1, [Debug message logging])
154 AC_ARG_ENABLE([examples-build], [AS_HELP_STRING([--enable-examples-build],
155 [build example applications (default n)])],
156 [build_examples=$enableval],
157 [build_examples='no'])
158 AM_CONDITIONAL([BUILD_EXAMPLES], [test "x$build_examples" != "xno"])
160 # check for -fvisibility=hidden compiler support (GCC >= 3.4)
161 saved_cflags="$CFLAGS"
162 # -Werror required for cygwin
163 CFLAGS="$CFLAGS -Werror -fvisibility=hidden"
164 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([])],
165 [VISIBILITY_CFLAGS="-fvisibility=hidden"
166 AC_DEFINE([DEFAULT_VISIBILITY], [__attribute__((visibility("default")))], [Default visibility]) ],
167 [ VISIBILITY_CFLAGS=""
168 AC_DEFINE([DEFAULT_VISIBILITY], [], [Default visibility]) ],
170 CFLAGS="$saved_cflags"
172 # check for -Wno-pointer-sign compiler support (GCC >= 4)
173 saved_cflags="$CFLAGS"
174 CFLAGS="$CFLAGS -Wno-pointer-sign"
175 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([])],
176 nopointersign_cflags="-Wno-pointer-sign", nopointersign_cflags="")
177 CFLAGS="$saved_cflags"
179 # sigaction not available on MinGW
180 AC_CHECK_FUNC([sigaction], [have_sigaction=yes], [have_sigaction=no])
181 AM_CONDITIONAL([HAVE_SIGACTION], [test "x$have_sigaction" = "xyes"])
183 # headers not available on all platforms but required on others
184 AC_CHECK_HEADERS([sys/time.h])
186 AM_CFLAGS="-std=gnu99 -Wall -Wundef -Wunused -Wstrict-prototypes -Werror-implicit-function-declaration $nopointersign_cflags -Wshadow"
188 AC_SUBST(VISIBILITY_CFLAGS)
192 AC_CONFIG_FILES([libusb-1.0.pc])
193 AC_CONFIG_FILES([Makefile])
194 AC_CONFIG_FILES([libusb/Makefile])
195 AC_CONFIG_FILES([examples/Makefile])
196 AC_CONFIG_FILES([doc/Makefile])
197 AC_CONFIG_FILES([doc/doxygen.cfg])