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AC_INIT([libusb], [1.0.7], [libusb-devel@lists.sourceforge.net], [libusb], [http://www.libusb.org])
AM_INIT_AUTOMAKE
AC_CONFIG_SRCDIR([libusb/core.c])
AC_CONFIG_MACRO_DIR([m4])
AM_CONFIG_HEADER([config.h])
m4_ifdef([AM_SILENT_RULES],[AM_SILENT_RULES([yes])])
AC_PREREQ([2.50])
AC_PROG_CC
AC_PROG_LIBTOOL
AC_C_INLINE
AM_PROG_CC_C_O
AC_DEFINE([_GNU_SOURCE], [], [Use GNU extensions])
AC_MSG_CHECKING([operating system])
case $host in
*-linux*)
AC_DEFINE(OS_LINUX, [], [Linux backend])
AC_SUBST(OS_LINUX)
AC_MSG_RESULT([Linux])
backend="linux"
AC_DEFINE([POSIX_THREADS], [], [Posix Threads])
threads="posix"
AC_CHECK_LIB(rt, clock_gettime)
AM_CFLAGS="-pthread -Wshadow"
AM_LDFLAGS=""
;;
*-darwin*)
AC_DEFINE(OS_DARWIN, [], [Darwin backend])
AC_SUBST(OS_DARWIN)
AC_DEFINE(USBI_OS_HANDLES_TIMEOUT, [], [Backend handles timeout])
AC_MSG_RESULT([Darwin/MacOS X])
backend="darwin"
AC_DEFINE([POSIX_THREADS], [], [Posix Threads])
threads="posix"
AM_CFLAGS="-pthread -Wshadow"
AM_LDFLAGS="-Wl,-framework -Wl,IOKit -Wl,-framework -Wl,CoreFoundation -Wl,-prebind -no-undefined"
;;
*-mingw*)
AC_DEFINE(OS_WINDOWS, [], [Windows backend])
AC_SUBST(OS_WINDOWS)
AC_MSG_RESULT([Windows])
backend="windows"
threads="windows"
LIBS="-lsetupapi -lole32"
AM_CFLAGS="-Wshadow"
AM_LDFLAGS="-no-undefined -avoid-version"
AC_CHECK_TOOL(RC, windres, no)
;;
*-cygwin*)
AC_DEFINE(OS_WINDOWS, [], [Windows backend])
AC_SUBST(OS_WINDOWS)
AC_MSG_RESULT([Windows])
backend="windows"
AC_DEFINE([POSIX_THREADS], [], [Posix Threads])
threads="posix"
LIBS="-lpthread -lsetupapi -lole32"
AM_CFLAGS=""
AM_LDFLAGS="-no-undefined -avoid-version"
AC_CHECK_TOOL(RC, windres, no)
;;
*)
AC_MSG_ERROR([unsupported operating system])
esac
AM_CONDITIONAL([OS_LINUX], [test "x$backend" == "xlinux"])
AM_CONDITIONAL([OS_DARWIN], [test "x$backend" == "xdarwin"])
AM_CONDITIONAL([OS_WINDOWS], [test "x$backend" == "xwindows"])
AM_CONDITIONAL([POSIX_THREADS], [test "x$threads" == "xposix"])
# timerfd
AC_CHECK_HEADER([sys/timerfd.h], [timerfd_h=1], [timerfd_h=0])
AC_ARG_ENABLE([timerfd],
[AS_HELP_STRING([--enable-timerfd],
[use timerfd for timing (default auto)])],
[use_timerfd=$enableval], [use_timerfd='auto'])
if test "x$use_timerfd" = "xyes" -a "x$timerfd_h" = "x0"; then
AC_MSG_ERROR([timerfd header not available; glibc 2.9+ required])
fi
AC_CHECK_DECL([TFD_NONBLOCK], [tfd_hdr_ok=yes], [tfd_hdr_ok=no], [#include <sys/timerfd.h>])
if test "x$use_timerfd" = "xyes" -a "x$tfd_hdr_ok" = "xno"; then
AC_MSG_ERROR([timerfd header not usable; glibc 2.9+ required])
fi
AC_MSG_CHECKING([whether to use timerfd for timing])
if test "x$use_timerfd" = "xno"; then
AC_MSG_RESULT([no (disabled by user)])
else
if test "x$timerfd_h" = "x1" -a "x$tfd_hdr_ok" = "xyes"; then
AC_MSG_RESULT([yes])
AC_DEFINE(USBI_TIMERFD_AVAILABLE, [], [timerfd headers available])
else
AC_MSG_RESULT([no (header not available)])
fi
fi
# Message logging
AC_ARG_ENABLE([log], [AS_HELP_STRING([--disable-log], [disable all logging])],
[log_enabled=$enableval],
[log_enabled='yes'])
if test "x$log_enabled" != "xno"; then
AC_DEFINE([ENABLE_LOGGING], 1, [Message logging])
fi
AC_ARG_ENABLE([debug-log], [AS_HELP_STRING([--enable-debug-log],
[enable debug logging (default n)])],
[debug_log_enabled=$enableval],
[debug_log_enabled='no'])
if test "x$debug_log_enabled" != "xno"; then
AC_DEFINE([ENABLE_DEBUG_LOGGING], 1, [Debug message logging])
fi
# Examples build
AC_ARG_ENABLE([examples-build], [AS_HELP_STRING([--enable-examples-build],
[build example applications (default n)])],
[build_examples=$enableval],
[build_examples='no'])
AM_CONDITIONAL([BUILD_EXAMPLES], [test "x$build_examples" != "xno"])
# Restore gnu89 inline semantics on gcc 4.3 and newer
saved_cflags="$CFLAGS"
CFLAGS="$CFLAGS -fgnu89-inline"
AC_COMPILE_IFELSE(AC_LANG_PROGRAM([]), inline_cflags="-fgnu89-inline", inline_cflags="")
CFLAGS="$saved_cflags"
# check for -fvisibility=hidden compiler support (GCC >= 3.4)
saved_cflags="$CFLAGS"
# -Werror required for cygwin
CFLAGS="$CFLAGS -Werror -fvisibility=hidden"
AC_COMPILE_IFELSE(AC_LANG_PROGRAM([]),
[VISIBILITY_CFLAGS="-fvisibility=hidden"
AC_DEFINE([API_EXPORTED], [__attribute__((visibility("default")))], [Default visibility]) ],
[ VISIBILITY_CFLAGS=""
AC_DEFINE([API_EXPORTED], [], [Default visibility]) ],
])
CFLAGS="$saved_cflags"
# check for -Wno-pointer-sign compiler support (GCC >= 4)
saved_cflags="$CFLAGS"
CFLAGS="$CFLAGS -Wno-pointer-sign"
AC_COMPILE_IFELSE(AC_LANG_PROGRAM([]),
nopointersign_cflags="-Wno-pointer-sign", nopointersign_cflags="")
CFLAGS="$saved_cflags"
AM_CFLAGS="$AM_CFLAGS -std=gnu99 $inline_cflags -Wall -Wundef -Wunused -Wstrict-prototypes -Werror-implicit-function-declaration $nopointersign_cflags"
AC_SUBST(VISIBILITY_CFLAGS)
AC_SUBST(AM_CFLAGS)
AC_SUBST(AM_LDFLAGS)
AC_CONFIG_FILES([libusb-1.0.pc] [Makefile] [libusb/Makefile] [examples/Makefile] [doc/Makefile] [doc/doxygen.cfg])
AC_OUTPUT
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