lime1

cf. #525

Author: yamt

cmake/wasi-sdk-sysroot.cmake

@@ -28,6 +28,7 @@ option(WASI_SDK_LTO "Whether or not to build LTO assets" ON)
 set(wasi_tmp_install ${CMAKE_CURRENT_BINARY_DIR}/install)
 set(wasi_sysroot ${wasi_tmp_install}/share/wasi-sysroot)
 set(wasi_resource_dir ${wasi_tmp_install}/wasi-resource-dir)
+set(cpu_cflags "-mcpu=lime1 -mno-extended-const")
 
 if(WASI_SDK_DEBUG_PREFIX_MAP)
   add_compile_options(
@@ -84,6 +85,7 @@ ExternalProject_Add(compiler-rt-build
       -DCOMPILER_RT_BUILD_ORC=OFF
       -DCOMPILER_RT_BUILD_GWP_ASAN=OFF
       -DCMAKE_C_COMPILER_TARGET=wasm32-wasi
+      -DCMAKE_C_FLAGS=${cpu_cflags}
       -DCOMPILER_RT_OS_DIR=wasi
       -DCMAKE_INSTALL_PREFIX=${wasi_resource_dir}
   EXCLUDE_FROM_ALL ON
@@ -151,7 +153,7 @@ function(define_wasi_libc_sub target target_suffix lto)
   get_property(directory_cflags DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR} PROPERTY COMPILE_OPTIONS)
   list(APPEND directory_cflags -resource-dir ${wasi_resource_dir})
   set(extra_cflags_list
-    "${CMAKE_C_FLAGS} ${directory_cflags} ${CMAKE_C_FLAGS_${CMAKE_BUILD_TYPE_UPPER}}")
+    "${cpu_cflags} ${CMAKE_C_FLAGS} ${directory_cflags} ${CMAKE_C_FLAGS_${CMAKE_BUILD_TYPE_UPPER}}")
   list(JOIN extra_cflags_list " " extra_cflags)
 
   ExternalProject_Add(wasi-libc-${target}${target_suffix}-build
@@ -223,6 +225,7 @@ function(define_libcxx_sub target target_suffix extra_target_flags extra_libdir_
   get_property(dir_compile_opts DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR} PROPERTY COMPILE_OPTIONS)
   get_property(dir_link_opts DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR} PROPERTY LINK_OPTIONS)
   set(extra_flags
+    ${cpu_cflags}
     ${target_flags}
     --target=${target}
     ${dir_compile_opts}