X-Git-Url: https://git.gag.com/?a=blobdiff_plain;f=config%2Fusrp_libusb.m4;h=588a958e0e55da0bb4ea5f59c78c37b9bf8f4234;hb=02e861042a55a29a9d23e34d3a193d31d183ae15;hp=f6f126532185c52c248fdb6d9f893a367db04eb8;hpb=86f5c92427b3f4bb30536d76cf63c3fca388fb2f;p=debian%2Fgnuradio diff --git a/config/usrp_libusb.m4 b/config/usrp_libusb.m4 index f6f12653..588a958e 100644 --- a/config/usrp_libusb.m4 +++ b/config/usrp_libusb.m4 @@ -1,51 +1,225 @@ -# Check for libusb support. -*- Autoconf -*- +dnl Copyright 2003,2008,2009 Free Software Foundation, Inc. +dnl +dnl This file is part of GNU Radio +dnl +dnl GNU Radio is free software; you can redistribute it and/or modify +dnl it under the terms of the GNU General Public License as published by +dnl the Free Software Foundation; either version 3, or (at your option) +dnl any later version. +dnl +dnl GNU Radio is distributed in the hope that it will be useful, +dnl but WITHOUT ANY WARRANTY; without even the implied warranty of +dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +dnl GNU General Public License for more details. +dnl +dnl You should have received a copy of the GNU General Public License +dnl along with GNU Radio; see the file COPYING. If not, write to +dnl the Free Software Foundation, Inc., 51 Franklin Street, +dnl Boston, MA 02110-1301, USA. -# Copyright 2003 Free Software Foundation, Inc. +# $1 is $req_libusb1: +# yes : check libusb-1.0 +# no : check libusb-0.12 +# "" : check libusb-0.12 -# This program is free software; you can redistribute it and/or modify -# it under the terms of the GNU General Public License as published by -# the Free Software Foundation; either version 2, or (at your option) -# any later version. -# This program is distributed in the hope that it will be useful, -# but WITHOUT ANY WARRANTY; without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -# GNU General Public License for more details. +AC_DEFUN([USRP_LIBUSB], [ + dnl Use PKGCONFIG to check for packages first, then check to + dnl make sure the USB_* variables work (whether from PKGCONFIG + dnl or overridden by the user) -# You should have received a copy of the GNU General Public License -# along with this program; if not, write to the Free Software -# Foundation, Inc., 51 Franklin Street, Boston, MA -# 02110-1301, USA. + dnl do not use LDFLAGS, since PKGCONFIG will provide everything + saved_LDFLAGS=${LDFLAGS} + LDFLAGS= + LIBUSB_PKG_CONFIG_NAME= -AC_DEFUN([USRP_LIBUSB], -[ - AC_LANG_PUSH(C) + dnl loop over various possible 'libusb' PKGCONFIG names, and choose + dnl the first one that meets both the user's selection (via + dnl configure flags) as well as what is installed - libusbok=yes - AC_CHECK_HEADERS([usb.h], - [], - [libusbok=no, - AC_MSG_RESULT([USRP requires libusb. usb.h not found. See http://libusb.sf.net])] - ) + dnl create the list of libusb PKGCONFIG modules to test + libusb_list='' + if test x$1 = xyes; then + dnl libusb-1.0 was requested; just test for it + libusb_list="libusb-1.0" + else + dnl test for legacy libusb only + libusb_list="libusb libusb-legacy" + fi + for libusb_name in ${libusb_list}; do + dnl clear internal variables + libusbok=no + have_libusb1=no + usb_header='' + usb_lib_func='' + usb_lib_name='' + dnl start checks + AC_MSG_NOTICE([Checking for LIBUSB version '${libusb_name}']) + if test ${libusb_name} = "libusb-1.0"; then + dnl see if the pkgconfig module is available + PKG_CHECK_MODULES(USB, ${libusb_name}, [ + libusbok=yes + have_libusb1=yes + usb_header='libusb-1.0/libusb.h' + usb_lib_func='libusb_bulk_transfer' + ], [libusbok=no]) + else + dnl see if the pkgconfig module is available + PKG_CHECK_MODULES(USB, ${libusb_name}, [ + libusbok=yes + usb_header='usb.h' + usb_lib_func='usb_bulk_write' + ], [libusbok=no]) + fi + if test $libusbok = yes; then + dnl PKGCONFIG found a version of LIBUSB. + dnl Check it to make sure it meets enough criteria: + dnl Verify that $usb_header is a valid header. If so, then + dnl verify that $usb_lib_func can be found in the library + dnl $usb_lib_name. if so, verify that the symbol 'usb_debug' is + dnl found in the library. + + dnl Check for the header. Similar to AC_CHECK_HEADERS, + dnl but doesn't append to known \#defines. + dnl If PKGCONFIG found variable USB_INCLUDEDIR, and it is + dnl not empty, use it for checking for $usb_header. + dnl Otherwise, maybe the user's shell environment is already + dnl configured to find this header. + AC_LANG_PUSH(C) + save_CPPFLAGS="$CPPFLAGS" + if test x$USB_INCLUDEDIR != x; then + USB_INCLUDES="-I$USB_INCLUDEDIR" + CPPFLAGS="$USB_INCLUDES" + fi + AC_MSG_CHECKING([$libusb_name for header $usb_header]) + AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ + #include "$usb_header" + ]], [])], + [libusbok=yes],[libusbok=no]) + AC_MSG_RESULT([$libusbok]) + CPPFLAGS="$save_CPPFLAGS" + AC_LANG_POP(C) + + if test $libusbok = yes; then + dnl found the header; now make sure the library is OK + dnl On Darwin, need to include the IOKit library. + + AC_LANG_PUSH(C) save_LIBS="$LIBS" - case "$host_os" in - darwin*) LIBS="$LIBS -lIOKit" ;; - *) ;; - esac - AC_SEARCH_LIBS(usb_bulk_write, [usb], - [USB_LIBS="$LIBS"], - [libusbok=no, - AC_MSG_RESULT([USRP requires libusb. usb_bulk_write not found. See http://libusb.sf.net])] - ) + case "$host_os" in + darwin*) + USB_LIBS="$USB_LIBS -lIOKit" + ;; + *) ;; + esac + LIBS="$USB_LIBS" + + dnl find the library link name + usb_lib_name=`echo $USB_LIBS | sed -e "s@.*-l\(usb[[^ ]]*\).*@\1@"` + + dnl Check for the function in the library. Similar to + dnl AC_CHECK_LIB, but doesn't append to known \#defines. + AC_MSG_CHECKING([$libusb_name for function $usb_lib_func in library $usb_lib_name]) + AC_LINK_IFELSE([AC_LANG_PROGRAM([[ + #ifdef __cplusplus + extern "C" + #endif + char $usb_lib_func (); + ]], [[return $usb_lib_func ();]])], + [libusbok=yes],[libusbok=no]) + AC_MSG_RESULT([$libusbok]) + case "$host_os" in + cygwin* | mingw*) + USB_LIBS="$LIBS" + ;; + *) ;; + esac LIBS="$save_LIBS" + AC_LANG_POP(C) + + if test $libusbok = yes; then + if test ${libusb_name} != "libusb-1.0"; then + dnl PKGCONFIG found a legacy version of libusb; make sure the + dnl variable _usb_debug is available in the found library + AC_LANG_PUSH(C) + save_CPPFLAGS="$CPPFLAGS" + CPPFLAGS="$USB_INCLUDES" + save_LIBS="$LIBS" + LIBS="$USB_LIBS" + AC_MSG_CHECKING([$libusb_name for symbol usb_debug in library $usb_lib_name]) + AC_LINK_IFELSE([AC_LANG_PROGRAM([[ + extern int usb_debug;]], + [[usb_debug = 0;]])], + [libusbok=yes],[libusbok=no]) + AC_MSG_RESULT([$libusbok]) + LIBS="$save_LIBS" + CPPFLAGS="$save_CPPFLAGS" + AC_LANG_POP(C) + fi + fi + fi + fi + dnl if everything checks out OK, finish up + if test $libusbok = yes; then + LIBUSB_PKG_CONFIG_NAME="${libusb_name}" + break + else + dnl something wasn't found in this LIBUSB version. + dnl HACK: clear cache variables for header and library + unset USB_INCLUDEDIR + unset USB_INCLUDES + unset USB_LIBS + unset $as_ac_Header + unset $as_ac_Lib + fi + done + + if test $libusbok = yes; then + dnl final error checking, mostly to create #define's + AC_LANG_PUSH(C) + save_CPPFLAGS="$CPPFLAGS" + CPPFLAGS="$USB_INCLUDES" + dnl Check for the header. + AC_CHECK_HEADERS([$usb_header], [], [libusbok=no]) + CPPFLAGS="$save_CPPFLAGS" + AC_LANG_POP(C) + + if test $libusbok = no; then + AC_MSG_RESULT([USRP requires libusb header '$usb_header' which was not found or was not usable. See http://www.libusb.org]) + else + dnl check for the library (again) + AC_LANG_PUSH(C) + save_CPPFLAGS="$CPPFLAGS" + CPPFLAGS="$USB_INCLUDES" + save_LIBS="$LIBS" + LIBS="$USB_LIBS" + AC_CHECK_LIB([$usb_lib_name], [$usb_lib_func], [], [ + libusbok=no + AC_MSG_RESULT([USRP requires library '$usb_lib_name' with function '$usb_lib_func', which was either not found or was not usable. See http://www.libusb.org])]) + LIBS="$save_LIBS" + CPPFLAGS="$save_CPPFLAGS" + AC_LANG_POP(C) + fi + fi + + if test $libusbok = yes; then + dnl success + AC_MSG_NOTICE([Using LIBUSB version '${libusb_name}']) + ifelse([$2], , :, [$2]) + else + dnl not found; clear substitution variables + LIBUSB_PKG_CONFIG_NAME= + USB_INCLUDES= + USB_LIBS= + ifelse([$3], , :, [$3]) + fi - AC_LANG_POP + dnl create substitution variables + AC_SUBST(USB_INCLUDES) + AC_SUBST(USB_LIBS) + AC_SUBST(LIBUSB_PKG_CONFIG_NAME) - if test $libusbok = yes; then - AC_SUBST(USB_LIBS) - ifelse([$1], , :, [$1]) - else - ifelse([$2], , :, [$2]) - fi + dnl restore LDFLAGS + LDFLAGS=${saved_LDFLAGS} ])