X-Git-Url: https://sigrok.org/gitweb/?a=blobdiff_plain;f=configure.ac;h=ea386c0d3270b7d2946a471fb60a528ecf56fe98;hb=ebf6aa306f5993252abb78787502b20134e1593c;hp=90291772580af6fd3dd7cb8e9218bc4531dcd28c;hpb=672a5e8ffbbba0ec0f8996a4e90fec04afaadd8f;p=libsigrok.git

diff --git a/configure.ac b/configure.ac
index 90291772..ea386c0d 100644
--- a/configure.ac
+++ b/configure.ac
@@ -321,6 +321,7 @@ SR_DRIVER([HP 3457A], [hp-3457a])
 SR_DRIVER([HP 3478A], [hp-3478a], [libgpib])
 SR_DRIVER([hp-59306a], [hp-59306a])
 SR_DRIVER([Hung-Chang DSO-2100], [hung-chang-dso-2100], [libieee1284])
+SR_DRIVER([ICStation USBRelay], [icstation-usbrelay], [serial_comm])
 SR_DRIVER([Ikalogic Scanalogic-2], [ikalogic-scanalogic2], [libusb])
 SR_DRIVER([Ikalogic Scanaplus], [ikalogic-scanaplus], [libftdi])
 SR_DRIVER([IPDBG LA], [ipdbg-la])
@@ -401,14 +402,41 @@ AC_ARG_ENABLE([java],
 
 sr_cxx_missing=
 
-# Check if the C++ compiler supports the C++11 standard.
-AX_CXX_COMPILE_STDCXX([11], [noext], [optional])
-AS_IF([test "x$HAVE_CXX11" != x1],
+# Check if the C++ compiler supports at least the C++11 standard.
+# Get the highest of the available C++17/C++14/C++11 standards.
+# This transparently amends CXXFLAGS to pick the detected standard.
+HAVE_MODERN_CXX=
+AS_IF([test "x$HAVE_MODERN_CXX" = x],
+	[AX_CXX_COMPILE_STDCXX([17], [noext], [optional])])
+AS_IF([test "x$HAVE_CXX17" = x1],
+	[HAVE_MODERN_CXX=yes])
+AS_IF([test "x$HAVE_MODERN_CXX" = x],
+	[AX_CXX_COMPILE_STDCXX([14], [noext], [optional])])
+AS_IF([test "x$HAVE_CXX14" = x1],
+	[HAVE_MODERN_CXX=yes])
+AS_IF([test "x$HAVE_MODERN_CXX" = x],
+	[AX_CXX_COMPILE_STDCXX([11], [noext], [optional])])
+AS_IF([test "x$HAVE_CXX11" = x1],
+	[HAVE_MODERN_CXX=yes])
+AS_IF([test "x$HAVE_MODERN_CXX" = x],
 	[SR_APPEND([sr_cxx_missing], [', '], ['C++11'])])
 
 # The C++ bindings need glibmm.
-SR_PKG_CHECK([glibmm], [SR_PKGLIBS_CXX], [glibmm-2.4 >= 2.32.0])
+# Prefer glibmm-2.4 for backwards compatibility.
+# Accept glibmm-2.68 when glibmm-2.4 is not available.
+sr_have_glibmm=no
 AS_IF([test "x$sr_have_glibmm" != xyes],
+	[SR_PKG_CHECK([glibmm24], [SR_PKGLIBS_CXX], [glibmm-2.4 >= 2.32.0])])
+AS_IF([test "x$sr_have_glibmm24" = xyes],
+	[SR_APPEND([SR_GLIBMM_REQUIRES], ['glibmm-2.4 >= 2.32.0'])
+	sr_have_glibmm=yes])
+AS_IF([test "x$sr_have_glibmm" != xyes],
+	[SR_PKG_CHECK([glibmm268], [SR_PKGLIBS_CXX], [glibmm-2.68 >= 2.68.0])])
+AS_IF([test "x$sr_have_glibmm268" = xyes],
+	[SR_APPEND([SR_GLIBMM_REQUIRES], ['glibmm-2.68 >= 2.68.0'])
+	sr_have_glibmm=yes])
+AS_IF([test "x$sr_have_glibmm" = xyes],
+	[AC_SUBST(SR_GLIBMM_REQUIRES)],
 	[SR_APPEND([sr_cxx_missing], [', '], [glibmm])])
 
 # The C++ bindings use Doxygen to parse libsigrok symbols.
@@ -438,6 +466,16 @@ AM_COND_IF([BINDINGS_CXX], [
 	AS_IF([test "x$sr_cv_have_stoi_stod" = xyes],
 		[AC_DEFINE([HAVE_STOI_STOD], [1],
 			[Specifies whether we have the stoi and stod functions.])])
+	# In theory std::stoul() should have identical availability
+	# as std::stoi() and std::stod() have. All of them are C++11.
+	# But we play it safe here, and check support individually.
+	AC_CACHE_CHECK([for stoul], [sr_cv_have_stoul],
+		[AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <string>]],
+				[[(void) std::stoul("1");]])],
+			[sr_cv_have_stoul=yes], [sr_cv_have_stoul=no])])
+	AS_IF([test "x$sr_cv_have_stoul" = xyes],
+		[AC_DEFINE([HAVE_STOUL], [1],
+			[Specifies whether we have the std::stoul function.])])
 ])
 
 #######################
@@ -616,6 +654,7 @@ AM_COND_IF([BINDINGS_CXX], [
 ])
 
 # Check for specific libusb features, now that we know the CFLAGS.
+# Also check for version dependent libftdi features.
 AC_LANG([C])
 sr_save_cflags=$CFLAGS
 sr_save_libs=$LIBS
@@ -625,12 +664,10 @@ AC_CHECK_TYPES([libusb_os_handle],
 	[sr_have_libusb_os_handle=yes], [sr_have_libusb_os_handle=no],
 	[[#include <libusb.h>]])
 AC_CHECK_FUNCS([zip_discard])
+AC_CHECK_FUNCS([ftdi_tciflush ftdi_tcoflush ftdi_tcioflush])
 LIBS=$sr_save_libs
 CFLAGS=$sr_save_cflags
 
-AM_COND_IF([NEED_USB], [AS_CASE([$sr_have_libusb_os_handle:$host_os], [no:mingw*],
-	[AC_MSG_ERROR([Windows builds require the event-abstraction branch of libusb])])])
-
 sr_glib_version=`$PKG_CONFIG --modversion glib-2.0 2>&AS_MESSAGE_LOG_FD`
 sr_libzip_version=`$PKG_CONFIG --modversion libzip 2>&AS_MESSAGE_LOG_FD`
 sr_zlib_version=`$PKG_CONFIG --modversion zlib 2>&AS_MESSAGE_LOG_FD`