47 lines
1.4 KiB
Text
47 lines
1.4 KiB
Text
dnl Check for LIBUSB
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dnl On success, HAVE_LIBUSB is set to 1 and PKG_CONFIG_REQUIRES is filled when
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dnl libusb is found using pkg-config
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AC_DEFUN([LIBNFC_CHECK_LIBUSB],
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[
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if test x"$libusb_required" = "xyes"; then
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HAVE_LIBUSB=0
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# Search using pkg-config
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if test x"$PKG_CONFIG" != "x"; then
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PKG_CHECK_MODULES([libusb], [libusb], [HAVE_LIBUSB=1], [HAVE_LIBUSB=0])
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if test x"$HAVE_LIBUSB" = "x1"; then
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if test x"$PKG_CONFIG_REQUIRES" != x""; then
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PKG_CONFIG_REQUIRES="$PKG_CONFIG_REQUIRES,"
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fi
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PKG_CONFIG_REQUIRES="$PKG_CONFIG_REQUIRES libusb"
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fi
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fi
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# Search using libusb-config
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if test x"$HAVE_LIBUSB" = "x0"; then
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AC_PATH_PROG(libusb_CONFIG,libusb-config)
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if test x"$libusb_CONFIG" != "x" ; then
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libusb_CFLAGS=`$libusb_CONFIG --cflags`
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libusb_LIBS=`$libusb_CONFIG --libs`
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HAVE_LIBUSB=1
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fi
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fi
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# Search the library and headers directly (last chance)
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if test x"$HAVE_LIBUSB" = "x0"; then
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AC_CHECK_HEADER(usb.h, [], [AC_MSG_ERROR([The libusb headers are missing])])
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AC_CHECK_LIB(usb, libusb_init, [], [AC_MSG_ERROR([The libusb library is missing])])
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libusb_LIBS="-lusb"
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HAVE_LIBUSB=1
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fi
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if test x"$HAVE_LIBUSB" = "x0"; then
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AC_MSG_ERROR([libusb is mandatory.])
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fi
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AC_SUBST(libusb_LIBS)
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AC_SUBST(libusb_CFLAGS)
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fi
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])
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