sw:vec-iree:cmake: Add nano header and library path explicitly

Bug: 194706298
Change-Id: I8b01528ffbeff1e86d84977f32101932af8efd69

CMakeLists.txt

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 3caaac7..1ffe9d7 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -15,6 +15,12 @@
 set(BUILD_RV64_LINUX OFF CACHE BOOL "Build RISC-V 64-bit Linux target (default: OFF)")
 set(BUILD_INTERNAL_MODELS OFF CACHE BOOL "Build applications from internal models (default: OFF")
 
+# Use nano spec header and libraries.
+if(NOT ${BUILD_RV64_LINUX})
+  include_directories(BEFORE SYSTEM "${RISCV_TOOLCHAIN_ROOT}/riscv32-unknown-elf/include/newlib-nano/")
+  link_directories(BEFORE "${RISCV_TOOLCHAIN_ROOT}/riscv32-unknown-elf/lib/newlib-nano/")
+endif()
+
 #-------------------------------------------------------------------------------
 # Springbok-specific settings
 #-------------------------------------------------------------------------------

cmake/riscv_iree.cmake

diff --git a/cmake/riscv_iree.cmake b/cmake/riscv_iree.cmake
index 634ae51..e394851 100644
--- a/cmake/riscv_iree.cmake
+++ b/cmake/riscv_iree.cmake
@@ -21,7 +21,7 @@
 
 set(RISCV_TOOLCHAIN_NAME clang)
 
-set(RISCV_TOOLCHAIN_ROOT "$ENV{CACHE}/toolchain_iree" CACHE PATH "RISC-V compiler path")
+set(RISCV_TOOLCHAIN_ROOT "$ENV{CACHE}/toolchain_iree_rv32imf" CACHE PATH "RISC-V compiler path")
 set(CMAKE_FIND_ROOT_PATH ${RISCV_TOOLCHAIN_ROOT})
 list(APPEND CMAKE_PREFIX_PATH "${RISCV_TOOLCHAIN_ROOT}")