lpac: make APDU backends configurable

Currently, lpac will be built with the PCSC and AT APDU backends by default
and its not configurable in OpenWrt.

Since smart card reads are not really common on OpenWrt devices lets
disable PCSC backend by default so we dont have to include PCSC lib and
daemon by default.

AT backend is left enabled by default since it has no external dependecies
and all modems have it.

QMI over QRTR backend is not selectable even though it is part of the 2.0.2
relase since it requires unstable libqmi 1.35.4 or newer and we are still
using 1.34 stable branch.

Signed-off-by: Robert Marko <robert.marko@sartura.hr>

utils/lpac/Config.in

@@ -0,0 +1,16 @@
+menu "Configuration"
+	depends on PACKAGE_lpac
+
+config LPAC_WITH_PCSC
+	bool "Include APDU PCSC Backend support"
+	default n
+	help
+	  Compile LPAC with APDU PCSC Backend support.
+
+config LPAC_WITH_AT
+	bool "Include APDU AT Backend support"
+	default y
+	help
+	  Compile LPAC with APDU AT Backend support.
+
+endmenu

utils/lpac/Makefile

@@ -4,7 +4,7 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=lpac
 PKG_VERSION:=2.0.2
-PKG_RELEASE:=1
+PKG_RELEASE:=2
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
 PKG_SOURCE_URL:=https://codeload.github.com/estkme-group/lpac/tar.gz/refs/tags/v$(PKG_VERSION)?
@@ -22,7 +22,10 @@ define Package/lpac
   SECTION:=utils
   CATEGORY:=Utilities
   TITLE:=eUICC eSIM LPA written in C
-  DEPENDS:=+libpcsclite +pcscd +libcurl
+  DEPENDS:= \
+    +LPAC_WITH_PCSC:libpcsclite \
+    +LPAC_WITH_PCSC:pcscd \
+    +libcurl
   URL:=https://github.com/estkme-group/lpac
 endef
 
@@ -32,12 +35,22 @@ define Package/lpac/description
   backends.
 endef
 
+define Package/lpac/config
+  source "$(SOURCE)/Config.in"
+endef
+
 define Package/lpac/conffiles
 /etc/config/lpac
 endef
 
 TARGET_CFLAGS += $(FPIC)
 
+CMAKE_OPTIONS += \
+  -DLPAC_WITH_APDU_PCSC=$(if $(CONFIG_LPAC_WITH_PCSC),ON,OFF) \
+  -DLPAC_WITH_APDU_AT=$(if $(CONFIG_LPAC_WITH_AT),ON,OFF) \
+  # libqmi 1.35.4 or newer is required for this
+  -DLPAC_WITH_APDU_QMI_QRTR=OFF
+
 define Package/lpac/install
 	$(INSTALL_DIR) $(1)/usr/bin
 	$(INSTALL_BIN) ./files/lpac.sh $(1)/usr/bin/lpac