libsigrokdecode: new package

[Peter: needs libglib2+host-pkgconf, simplify pre-configure, propagate
	!python dependency]
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/Config.in

@@ -738,6 +738,7 @@ menu "Hardware handling"
 	source "package/libserial/Config.in"
 	source "package/libserialport/Config.in"
 	source "package/libsigrok/Config.in"
+	source "package/libsigrokdecode/Config.in"
 	source "package/libsoc/Config.in"
 	source "package/libusb/Config.in"
 	source "package/libusb-compat/Config.in"

package/libsigrokdecode/Config.in

@@ -0,0 +1,26 @@
+config BR2_PACKAGE_LIBSIGROKDECODE
+	bool "libsigrokdecode"
+	select BR2_PACKAGE_LIBGLIB2
+	select BR2_PACKAGE_PYTHON3
+	depends on !BR2_PACKAGE_PYTHON # python3
+	depends on BR2_USE_WCHAR # libglib2/python3
+	depends on BR2_TOOLCHAIN_HAS_THREADS # libglib2/python3
+	depends on BR2_USE_MMU # libglib2/python3
+	help
+	  Libsigrokdecode is a shared library written in C, which
+	  provides (streaming) protocol decoding functionality. Say
+	  yes here if you want to add this functionality to your
+	  buildroot-generated sigrok suite.
+
+	  This library is a part of the sigrok software suite.
+
+	  http://sigrok.org/wiki/Libsigrokdecode
+
+comment "libsigrokecode needs a toolchain w/ wchar, threads"
+	depends on BR2_USE_MMU
+	depends on !BR2_PACKAGE_PYTHON
+	depends on !BR2_USE_WCHAR || !BR2_TOOLCHAIN_HAS_THREADS
+
+comment "libsigrokdecode is not compatible with python"
+	depends on BR2_USE_MMU
+	depends on BR2_PACKAGE_PYTHON

package/libsigrokdecode/libsigrokdecode.mk

@@ -0,0 +1,23 @@
+################################################################################
+#
+# libsigrokdecode
+#
+################################################################################
+
+LIBSIGROKDECODE_VERSION = 9177963de41c2d003d417049470eea3c98eeb2ef
+# No https access on upstream git
+LIBSIGROKDECODE_SITE = git://sigrok.org/libsigrokdecode
+LIBSIGROKDECODE_LICENSE = GPLv3+
+LIBSIGROKDECODE_LICENSE_FILES = COPYING
+# Git checkout has no configure script
+LIBSIGROKDECODE_AUTORECONF = YES
+LIBSIGROKDECODE_INSTALL_STAGING = YES
+LIBSIGROKDECODE_DEPENDENCIES = host-pkgconf libglib2 python3
+
+define LIBSIGROKDECODE_ADD_MISSING
+	mkdir -p $(@D)/autostuff
+endef
+
+LIBSIGROKDECODE_PRE_CONFIGURE_HOOKS += LIBSIGROKDECODE_ADD_MISSING
+
+$(eval $(autotools-package))

package/sigrok-cli/sigrok-cli.mk

@@ -12,7 +12,13 @@ SIGROK_CLI_LICENSE_FILES = COPYING
 # Git checkout has no configure script
 SIGROK_CLI_AUTORECONF = YES
 SIGROK_CLI_DEPENDENCIES = host-pkgconf libsigrok
-SIGROK_CLI_CONF_OPTS = --with-libsigrokdecode=NO
+
+ifeq ($(BR2_PACKAGE_LIBSIGROKDECODE),y)
+SIGROK_CLI_CONF_OPTS += --with-libsigrokdecode
+SIGROK_CLI_DEPENDENCIES += libsigrokdecode
+else
+SIGROK_CLI_CONF_OPTS += --with-libsigrokdecode=NO
+endif
 
 define SIGROK_CLI_ADD_MISSING
 	mkdir -p $(@D)/autostuff