unable to create compilation: LibCRuntimeNotFound only in first time

[RodrigoDornelles]

Zig Version

0.13.0

Steps to Reproduce and Observed Behavior

Related closed issues #19790 #8549

download zig try zig cc main.c

first time failed: LibCRuntimeNotFound

but if you try angain zig cc main.c works

# Zig
set(ZIG_VERSION "0.13.0")
set(ZIG_DOWNLOAD "http://ziglang.org/download")
set(ZIG_PATH "${CMAKE_SOURCE_DIR}/vendor/zig/zig")
if(${CMAKE_HOST_SYSTEM_NAME} STREQUAL "Darwin")
    set(ZIG_DOWNLOAD "${ZIG_DOWNLOAD}/${ZIG_VERSION}/zig-macos-${CMAKE_HOST_SYSTEM_PROCESSOR}-${ZIG_VERSION}.tar.xz")
elseif(${CMAKE_HOST_SYSTEM_NAME} STREQUAL "Linux")
    set(ZIG_DOWNLOAD "${ZIG_DOWNLOAD}/${ZIG_VERSION}/zig-linux-${CMAKE_HOST_SYSTEM_PROCESSOR}-${ZIG_VERSION}.tar.xz")
elseif(${CMAKE_HOST_SYSTEM_NAME} STREQUAL "Windows")
    set(ZIG_DOWNLOAD "${ZIG_DOWNLOAD}/${ZIG_VERSION}/zig-windows-${CMAKE_HOST_SYSTEM_PROCESSOR}-${ZIG_VERSION}.zip")
endif()
if(NOT EXISTS ${ZIG_PATH})
    FetchContent_Populate(
        compiler_zig
        URL "${ZIG_DOWNLOAD}"
        SOURCE_DIR "${CMAKE_SOURCE_DIR}/vendor/zig"
        SUBBUILD_DIR "${CMAKE_BINARY_DIR}/CMakeFiles/_deps/zig-subbuild"
        BINARY_DIR "${CMAKE_BINARY_DIR}/CMakeFiles/_deps/zig-build"
    )
endif()
find_program(ZIGC zig PATHS "${CMAKE_SOURCE_DIR}/vendor/zig" REQUIRED NO_DEFAULT_PATH)

# Lua
if(NOT EXISTS "${CMAKE_SOURCE_DIR}/vendor/lua/lua")
    FetchContent_Declare(
        lib_lua
        GIT_REPOSITORY https://github.com/lua/lua
        GIT_TAG v5.4.7
        SOURCE_DIR "${CMAKE_SOURCE_DIR}/vendor/lua"
        SUBBUILD_DIR "${CMAKE_BINARY_DIR}/CMakeFiles/_deps/lua-subbuild"
        BINARY_DIR "${CMAKE_BINARY_DIR}/CMakeFiles/_deps/lua-build"
    )
    FetchContent_MakeAvailable(lib_lua)
    execute_process(
        WORKING_DIRECTORY "${CMAKE_SOURCE_DIR}/vendor/lua"
        COMMAND ${ZIGC} cc -DMAKE_LUA onelua.c -o lua
    )
endif()
find_program(LUAC lua PATHS "${CMAKE_SOURCE_DIR}/vendor/lua" REQUIRED NO_DEFAULT_PATH)

--

if you do git clean -xdf and download again, the error will occur.

Expected Behavior

no start error occurs.

[RodrigoDornelles]

Investigating further I discovered that being built statically with target is not happening, it is something related to the initialization of the clang and the zig trying to find C runtime.