feat: vendor libltkc

vendor/libltkc/examples/build.sh

@@ -0,0 +1,49 @@
+#!/bin/bash -eu
+
+#
+# Example build script for use with Impinj ETK
+#
+# The target libraries are contained inside the sysroot at
+# "$ETK_ROOT/arm-buildroot-linux-gnueabihf/sysroot/lib".  The host libraries
+# are contained in "$ETK_ROOT/lib".
+#
+# For a host build, CMake must be configured to correctly search for host
+# headers and libraries in the correct location inside the ETK.
+#
+# For a target build, CMake must be configured to use the correct cross
+# compiler and informed about the sysroot location in the ETK.
+#
+# The script allows overriding some variables when building, e.g.:
+#
+#   [user@machine]$ BUILD_TYPE=Release VERBOSE=ON ./build.sh
+#
+
+SCRIPT_PATH=$(dirname $(realpath $0))
+OUTPUT_PATH=${SCRIPT_PATH}/output
+
+# defaults when building with ETK; override on command line for custom setup
+ETK_PATH=${ETK_PATH:-$(realpath ${SCRIPT_PATH}/../../arm-toolchain)}
+BUILD_TYPE=${BUILD_TYPE:-Debug}
+VERBOSE=${VERBOSE:-OFF}
+
+# host build; override on command line for custom setup
+INC=${INC:-${ETK_PATH}/include}
+LIB=${LIB:-${ETK_PATH}/lib}
+cmake ${SCRIPT_PATH} -B"${OUTPUT_PATH}/host" \
+    -DCMAKE_VERBOSE_MAKEFILE:BOOL=${VERBOSE} \
+    -DCMAKE_BUILD_TYPE=${BUILD_TYPE} \
+    -DCMAKE_C_FLAGS="-isystem ${INC}" \
+    -DCMAKE_LIBRARY_PATH=${LIB}
+cmake --build "${OUTPUT_PATH}/host"
+
+# target build
+CC=$(find ${ETK_PATH}/bin -name arm-*-linux-*-gcc)
+CC=${CC%gcc}
+SYSROOT_PATH="$(${CC}gcc -print-sysroot)"
+cmake ${SCRIPT_PATH} -B"${OUTPUT_PATH}/target" \
+    -DCMAKE_VERBOSE_MAKEFILE:BOOL=${VERBOSE} \
+    -DCMAKE_BUILD_TYPE=${BUILD_TYPE} \
+    -DCMAKE_C_COMPILER=${CC}gcc \
+    -DCMAKE_CXX_COMPILER=${CC}g++ \
+    -DCMAKE_FIND_ROOT_PATH=${SYSROOT_PATH}
+cmake --build "${OUTPUT_PATH}/target"