+ fi
+ ;;
+esac
+
+# USB + FX2 firmware helper code is only compiled in if libusb-1.0 was found.
+AM_CONDITIONAL(NEED_USB, test "x$have_libusb1_0" != xno)
+
+# libftdi is only needed for some hardware drivers. Disable them if not found.
+PKG_CHECK_MODULES([libftdi], [libftdi >= 0.16],
+ [CFLAGS="$CFLAGS $libftdi_CFLAGS";
+ LIBS="$LIBS $libftdi_LIBS";
+ SR_PKGLIBS="$SR_PKGLIBS libftdi"],
+ [HW_ASIX_SIGMA="no"; HW_CHRONOVU_LA8="no"; HW_IKALOGIC_SCANAPLUS="no"])
+
+# libudev is only needed for some hardware drivers. Disable them if not found.
+PKG_CHECK_MODULES([libudev], [libudev >= 151],
+ [CFLAGS="$CFLAGS $libudev_CFLAGS"; LIBS="$LIBS $libudev_LIBS";
+ SR_PKGLIBS="$SR_PKGLIBS libudev"],
+ [HW_LINK_MSO19="no"])
+
+# ALSA is only needed for some hardware drivers. Disable them if not found.
+PKG_CHECK_MODULES([alsa], [alsa >= 1.0],
+ [CFLAGS="$CFLAGS $alsa_CFLAGS"; LIBS="$LIBS $alsa_LIBS";
+ SR_PKGLIBS="$SR_PKGLIBS alsa"],
+ [HW_ALSA="no"])
+
+# The Check unit testing framework is optional. Disable if not found.
+PKG_CHECK_MODULES([check], [check >= 0.9.4],
+ [have_check="yes"; CFLAGS="$CFLAGS $check_CFLAGS";
+ LIBS="$LIBS $check_LIBS"], [have_check="no"])
+AM_CONDITIONAL(HAVE_CHECK, test x"$have_check" = "xyes")
+
+# The OLS driver uses serial port file descriptors directly, and therefore
+# will not currently work on Windows.
+case "$host" in
+*mingw*)
+ HW_OLS="no"
+ ;;
+esac
+
+AC_SUBST(SR_PKGLIBS)
+
+# Now set AM_CONDITIONALs and AC_DEFINEs for the enabled/disabled drivers.
+
+AM_CONDITIONAL(HW_AGILENT_DMM, test x$HW_AGILENT_DMM = xyes)
+if test "x$HW_AGILENT_DMM" = "xyes"; then
+ AC_DEFINE(HAVE_HW_AGILENT_DMM, 1, [Agilent DMM support])
+fi
+
+AM_CONDITIONAL(HW_ALSA, test x$HW_ALSA = xyes)
+if test "x$HW_ALSA" = "xyes"; then
+ AC_DEFINE(HAVE_HW_ALSA, 1, [ALSA driver support])
+fi
+
+AM_CONDITIONAL(HW_APPA_55II, test x$HW_APPA_55II = xyes)
+if test "x$HW_APPA_55II" = "xyes"; then
+ AC_DEFINE(HAVE_HW_APPA_55II, 1, [APPA 55II support])
+fi
+
+AM_CONDITIONAL(HW_ASIX_SIGMA, test x$HW_ASIX_SIGMA = xyes)
+if test "x$HW_ASIX_SIGMA" = "xyes"; then
+ AC_DEFINE(HAVE_HW_ASIX_SIGMA, 1, [ASIX SIGMA/SIGMA2 support])
+fi
+
+AM_CONDITIONAL(HW_ATTEN_PPS3XXX, test x$HW_ATTEN_PPS3XXX = xyes)
+if test "x$HW_ATTEN_PPS3XXX" = "xyes"; then
+ AC_DEFINE(HAVE_HW_ATTEN_PPS3XXX, 1, [Atten PPS3xxx support])
+fi
+
+AM_CONDITIONAL(HW_BRYMEN_DMM, test x$HW_BRYMEN_DMM = xyes)
+if test "x$HW_BRYMEN_DMM" = "xyes"; then
+ AC_DEFINE(HAVE_HW_BRYMEN_DMM, 1, [Brymen DMM support])
+fi
+
+AM_CONDITIONAL(HW_CEM_DT_885X, test x$HW_CEM_DT_885X = xyes)
+if test "x$HW_CEM_DT_885X" = "xyes"; then
+ AC_DEFINE(HAVE_HW_CEM_DT_885X, 1, [CEM DT-885x support])
+fi
+
+AM_CONDITIONAL(HW_CENTER_3XX, test x$HW_CENTER_3XX = xyes)
+if test "x$HW_CENTER_3XX" = "xyes"; then
+ AC_DEFINE(HAVE_HW_CENTER_3XX, 1, [Center 3xx support])
+fi
+
+AM_CONDITIONAL(HW_CHRONOVU_LA8, test x$HW_CHRONOVU_LA8 = xyes)
+if test "x$HW_CHRONOVU_LA8" = "xyes"; then
+ AC_DEFINE(HAVE_HW_CHRONOVU_LA8, 1, [ChronoVu LA8 support])
+fi
+
+AM_CONDITIONAL(HW_COLEAD_SLM, test x$HW_COLEAD_SLM = xyes)
+if test "x$HW_COLEAD_SLM" = "xyes"; then
+ AC_DEFINE(HAVE_HW_COLEAD_SLM, 1, [Colead SLM support])
+fi
+
+AM_CONDITIONAL(HW_DEMO, test x$HW_DEMO = xyes)
+if test "x$HW_DEMO" = "xyes"; then
+ AC_DEFINE(HAVE_HW_DEMO, 1, [Demo driver support])
+fi
+
+AM_CONDITIONAL(HW_FLUKE_DMM, test x$HW_FLUKE_DMM = xyes)
+if test "x$HW_FLUKE_DMM" = "xyes"; then
+ AC_DEFINE(HAVE_HW_FLUKE_DMM, 1, [Fluke DMM support])
+fi
+
+AM_CONDITIONAL(HW_FX2LAFW, test x$HW_FX2LAFW = xyes)
+if test "x$HW_FX2LAFW" = "xyes"; then
+ AC_DEFINE(HAVE_HW_FX2LAFW, 1, [fx2lafw support])
+fi
+
+AM_CONDITIONAL(HW_GMC_MH_1X_2X, test x$HW_GMC_MH_1X_2X = xyes)
+if test "x$HW_GMC_MH_1X_2X" = "xyes"; then
+ AC_DEFINE(HAVE_HW_GMC_MH_1X_2X, 1, [gmc-mh-1x-2x support])
+fi
+
+AM_CONDITIONAL(HW_HANTEK_DSO, test x$HW_HANTEK_DSO = xyes)
+if test "x$HW_HANTEK_DSO" = "xyes"; then
+ AC_DEFINE(HAVE_HW_HANTEK_DSO, 1, [Hantek DSO support])
+fi
+
+AM_CONDITIONAL(HW_HAMEG_HMO, test x$HW_HAMEG_HMO = xyes)
+if test "x$HW_HAMEG_HMO" = "xyes"; then
+ AC_DEFINE(HAVE_HW_HAMEG_HMO, 1, [Hameg HMO support])
+fi
+
+AM_CONDITIONAL(HW_IKALOGIC_SCANALOGIC2, test x$HW_IKALOGIC_SCANALOGIC2 = xyes)
+if test "x$HW_IKALOGIC_SCANALOGIC2" = "xyes"; then
+ AC_DEFINE(HAVE_HW_IKALOGIC_SCANALOGIC2, 1, [IKALOGIC Scanalogic-2 support])
+fi
+
+AM_CONDITIONAL(HW_IKALOGIC_SCANAPLUS, test x$HW_IKALOGIC_SCANAPLUS = xyes)
+if test "x$HW_IKALOGIC_SCANAPLUS" = "xyes"; then
+ AC_DEFINE(HAVE_HW_IKALOGIC_SCANAPLUS, 1, [IKALOGIC ScanaPLUS support])
+fi
+
+AM_CONDITIONAL(HW_KECHENG_KC_330B, test x$HW_KECHENG_KC_330B = xyes)
+if test "x$HW_KECHENG_KC_330B" = "xyes"; then
+ AC_DEFINE(HAVE_HW_KECHENG_KC_330B, 1, [Kecheng KC-330B support])
+fi
+
+AM_CONDITIONAL(HW_LASCAR_EL_USB, test x$HW_LASCAR_EL_USB = xyes)
+if test "x$HW_LASCAR_EL_USB" = "xyes"; then
+ AC_DEFINE(HAVE_HW_LASCAR_EL_USB, 1, [Lascar EL-USB support])
+fi
+
+AM_CONDITIONAL(HW_LINK_MSO19, test x$HW_LINK_MSO19 = xyes)
+if test "x$HW_LINK_MSO19" = "xyes"; then
+ AC_DEFINE(HAVE_HW_LINK_MSO19, 1, [Link Instruments MSO-19 support])
+fi