ngx_lua_opt_I=
ngx_lua_opt_L=
luajit_ld_opt=

ngx_feature_name=
ngx_feature_run=no
ngx_feature_incs=
ngx_feature_test=

if [ -n "$LUAJIT_INC" -o -n "$LUAJIT_LIB" ]; then
    # explicitly set LuaJIT paths

    if [ "$NGX_PLATFORM" = win32 ]; then
        ngx_feature="LuaJIT library in $LUAJIT_LIB and $LUAJIT_INC (win32)"
        ngx_feature_path="$LUAJIT_INC"
        ngx_lua_opt_I="-I$LUAJIT_INC"
        ngx_lua_opt_L="-L$LUAJIT_LIB"

        # ensure that -I$LUAJIT_INC and -L$LUAJIT_LIB come first.
        SAVED_CC_TEST_FLAGS="$CC_TEST_FLAGS"
        CC_TEST_FLAGS="$ngx_lua_opt_I $CC_TEST_FLAGS"
        SAVED_NGX_TEST_LD_OPT="$NGX_TEST_LD_OPT"
        NGX_TEST_LD_OPT="$ngx_lua_opt_L $NGX_TEST_LD_OPT"

        # LuaJIT's win32 build uses the library file name lua51.dll
        ngx_feature_libs="$ngx_lua_opt_L -llua51"

        . auto/feature

        # clean up
        CC_TEST_FLAGS="$SAVED_CC_TEST_FLAGS"
        NGX_TEST_LD_OPT="$SAVED_NGX_TEST_LD_OPT"
    else
        # attempt to link with -ldl, static linking on Linux requires it.
        ngx_feature="LuaJIT library in $LUAJIT_LIB and $LUAJIT_INC (specified by the LUAJIT_LIB and LUAJIT_INC env, with -ldl)"
        ngx_feature_path="$LUAJIT_INC"
        ngx_lua_opt_I="-I$LUAJIT_INC"
        ngx_lua_opt_L="-L$LUAJIT_LIB"
        luajit_ld_opt="-lm -ldl"

        # ensure that -I$LUAJIT_INC and -L$LUAJIT_LIB come first
        SAVED_CC_TEST_FLAGS="$CC_TEST_FLAGS"
        CC_TEST_FLAGS="$ngx_lua_opt_I $CC_TEST_FLAGS"
        SAVED_NGX_TEST_LD_OPT="$NGX_TEST_LD_OPT"
        NGX_TEST_LD_OPT="$ngx_lua_opt_L $NGX_TEST_LD_OPT"

        if [ $NGX_RPATH = YES ]; then
            ngx_feature_libs="-R$LUAJIT_LIB $ngx_lua_opt_L -lluajit-5.1 $luajit_ld_opt"
        else
            ngx_feature_libs="$ngx_lua_opt_L -lluajit-5.1 $luajit_ld_opt"
        fi

        . auto/feature

        # clean up
        CC_TEST_FLAGS="$SAVED_CC_TEST_FLAGS"
        NGX_TEST_LD_OPT="$SAVED_NGX_TEST_LD_OPT"

        if [ $ngx_found = no ]; then
            # retry without -ldl
            ngx_feature="LuaJIT library in $LUAJIT_LIB and $LUAJIT_INC (specified by the LUAJIT_LIB and LUAJIT_INC env)"
            ngx_feature_path="$LUAJIT_INC"
            ngx_lua_opt_I="-I$LUAJIT_INC"
            ngx_lua_opt_L="-L$LUAJIT_LIB"
            luajit_ld_opt="-lm"

            # ensure that -I$LUAJIT_INC and -L$LUAJIT_LIB come first
            SAVED_CC_TEST_FLAGS="$CC_TEST_FLAGS"
            CC_TEST_FLAGS="$ngx_lua_opt_I $CC_TEST_FLAGS"
            SAVED_NGX_TEST_LD_OPT="$NGX_TEST_LD_OPT"
            NGX_TEST_LD_OPT="$ngx_lua_opt_L $NGX_TEST_LD_OPT"

            if [ $NGX_RPATH = YES ]; then
                ngx_feature_libs="-R$LUAJIT_LIB $ngx_lua_opt_L -lluajit-5.1 $luajit_ld_opt"
            else
                ngx_feature_libs="$ngx_lua_opt_L -lluajit-5.1 $luajit_ld_opt"
            fi

            . auto/feature

            # clean up
            CC_TEST_FLAGS="$SAVED_CC_TEST_FLAGS"
            NGX_TEST_LD_OPT="$SAVED_NGX_TEST_LD_OPT"
        fi
    fi

    if [ $ngx_found = no ]; then
        cat << END
        $0: error: ngx_stream_lua_module requires the LuaJIT library, but it could not be found where specified (LUAJIT_LIB=$LUAJIT_LIB, LUAJIT_INC=$LUAJIT_INC).
END
        exit 1
    fi

    case "$NGX_PLATFORM" in
        Darwin:*)
            case "$NGX_MACHINE" in
                amd64 | x86_64 | i386)
                    echo "adding extra linking options needed by LuaJIT on $NGX_MACHINE"
                    luajit_ld_opt="$luajit_ld_opt -pagezero_size 10000 -image_base 100000000"
                    ngx_feature_libs="$ngx_feature_libs -pagezero_size 10000 -image_base 100000000"
                ;;

                *)
                ;;
            esac
        ;;

        *)
        ;;
    esac
else
    # auto-discovery
    if [ $ngx_found = no ]; then
        # FreeBSD with luajit-2.0 from ports collection
        ngx_feature="LuaJIT library in /usr/local/"
        ngx_feature_path="/usr/local/include/luajit-2.0"
        luajit_ld_opt="-lm"
        LUAJIT_LIB="/usr/local/lib"
        if [ $NGX_RPATH = YES ]; then
            ngx_feature_libs="-R/usr/local/lib -L/usr/local/lib -lluajit-5.1 -lm"
        else
            ngx_feature_libs="-L/usr/local/lib -lluajit-5.1 -lm"
        fi
        . auto/feature
    fi

    if [ $ngx_found = no ]; then
        # Gentoo with LuaJIT-2.0, try with -ldl
        ngx_feature="LuaJIT library in /usr/"
        ngx_feature_path="/usr/include/luajit-2.0"
        luajit_ld_opt="-lm -ldl"
        LUAJIT_LIB="/usr/lib"
        if [ $NGX_RPATH = YES ]; then
            ngx_feature_libs="-R/usr/lib -L/usr/lib -lm -lluajit-5.1 -ldl"
        else
            ngx_feature_libs="-L/usr/lib -lm -lluajit-5.1 -ldl"
        fi
        . auto/feature
    fi

    if [ $ngx_found = no ]; then
        # Gentoo with LuaJIT 2.0
        ngx_feature="LuaJIT library in /usr/"
        ngx_feature_path="/usr/include/luajit-2.0"
        luajit_ld_opt="-lm"
        LUAJIT_LIB="/usr/lib"
        if [ $NGX_RPATH = YES ]; then
            ngx_feature_libs="-R/usr/lib -L/usr/lib -lm -lluajit-5.1"
        else
            ngx_feature_libs="-L/usr/lib -lm -lluajit-5.1"
        fi
        . auto/feature
    fi
fi

ngx_module_incs=
ngx_module_libs=

if [ $ngx_found = yes ]; then
    # this is a hack to persuade nginx's build system to favor
    # the paths set by our user environment
    CFLAGS="$ngx_lua_opt_I $CFLAGS"
    NGX_LD_OPT="$ngx_lua_opt_L $NGX_LD_OPT"

    ngx_module_incs="$ngx_module_incs $ngx_feature_path"
    ngx_module_libs="$ngx_module_libs $ngx_feature_libs"
else
    cat << END
    $0: error: ngx_stream_lua_module requires the LuaJIT library.
END
    exit 1
fi

# ----------------------------------------

ngx_feature="LuaJIT 2.x"
ngx_feature_run=no
ngx_feature_incs="#include <luajit.h>"
ngx_feature_test="#if !defined(LUAJIT_VERSION_NUM) || LUAJIT_VERSION_NUM < 20000
                  #    error unsupported LuaJIT version
                  #endif
                  "

. auto/feature

if [ $ngx_found = no ]; then
    cat << END
    $0: error: unsupported LuaJIT version; ngx_stream_lua_module requires LuaJIT 2.x.
END
    exit 1
fi

# ----------------------------------------

ngx_feature="Lua language 5.1"
ngx_feature_run=no
ngx_feature_incs="#include <lua.h>"
ngx_feature_test="#if !defined(LUA_VERSION_NUM) || LUA_VERSION_NUM != 501
                  #   error unsupported Lua language version
                  #endif
                  "

. auto/feature

if [ $ngx_found = no ]; then
    cat << END
    $0: error: unsupported Lua language version; ngx_stream_lua_module requires Lua 5.1.
END
    exit 1
fi

# ----------------------------------------

ngx_feature="LuaJIT has FFI"
ngx_feature_libs="$ngx_module_libs"
ngx_feature_run=no
ngx_feature_incs="#include <lualib.h>
                  #include <lauxlib.h>
                  #include <assert.h>
                  "
ngx_feature_test="lua_State *L = luaL_newstate();
                  assert(L != NULL);
                  luaopen_ffi(L);
                  "

. auto/feature

if [ $ngx_found = no ]; then
    cat << END
    $0: error: unsupported LuaJIT build; ngx_stream_lua_module requires LuaJIT with FFI enabled.
END
    exit 1
fi

# ----------------------------------------

ngx_addon_name=ngx_stream_lua_module
STREAM_LUA_SRCS=" \
                $ngx_addon_dir/src/ngx_stream_lua_api.c \
                $ngx_addon_dir/src/ngx_stream_lua_request.c \
                $ngx_addon_dir/src/ngx_stream_lua_module.c \
                $ngx_addon_dir/src/ngx_stream_lua_directive.c \
                $ngx_addon_dir/src/ngx_stream_lua_lex.c \
                $ngx_addon_dir/src/ngx_stream_lua_contentby.c \
                $ngx_addon_dir/src/ngx_stream_lua_util.c \
                $ngx_addon_dir/src/ngx_stream_lua_cache.c \
                $ngx_addon_dir/src/ngx_stream_lua_clfactory.c \
                $ngx_addon_dir/src/ngx_stream_lua_exception.c \
                $ngx_addon_dir/src/ngx_stream_lua_pcrefix.c \
                $ngx_addon_dir/src/ngx_stream_lua_uthread.c \
                $ngx_addon_dir/src/ngx_stream_lua_coroutine.c \
                $ngx_addon_dir/src/ngx_stream_lua_output.c \
                $ngx_addon_dir/src/ngx_stream_lua_consts.c \
                $ngx_addon_dir/src/ngx_stream_lua_log.c \
                $ngx_addon_dir/src/ngx_stream_lua_time.c \
                $ngx_addon_dir/src/ngx_stream_lua_string.c \
                $ngx_addon_dir/src/ngx_stream_lua_control.c \
                $ngx_addon_dir/src/ngx_stream_lua_sleep.c \
                $ngx_addon_dir/src/ngx_stream_lua_phase.c \
                $ngx_addon_dir/src/ngx_stream_lua_ctx.c \
                $ngx_addon_dir/src/ngx_stream_lua_regex.c \
                $ngx_addon_dir/src/ngx_stream_lua_script.c \
                $ngx_addon_dir/src/ngx_stream_lua_shdict.c \
                $ngx_addon_dir/src/ngx_stream_lua_variable.c \
                $ngx_addon_dir/src/ngx_stream_lua_timer.c \
                $ngx_addon_dir/src/ngx_stream_lua_config.c \
                $ngx_addon_dir/src/ngx_stream_lua_worker.c \
                $ngx_addon_dir/src/ngx_stream_lua_misc.c \
                $ngx_addon_dir/src/ngx_stream_lua_initby.c \
                $ngx_addon_dir/src/ngx_stream_lua_initworkerby.c \
                $ngx_addon_dir/src/ngx_stream_lua_socket_tcp.c \
                $ngx_addon_dir/src/ngx_stream_lua_socket_udp.c \
                $ngx_addon_dir/src/ngx_stream_lua_args.c \
                $ngx_addon_dir/src/ngx_stream_lua_ssl.c \
                $ngx_addon_dir/src/ngx_stream_lua_balancer.c \
                $ngx_addon_dir/src/ngx_stream_lua_logby.c \
                $ngx_addon_dir/src/ngx_stream_lua_prereadby.c \
                $ngx_addon_dir/src/ngx_stream_lua_semaphore.c \
                $ngx_addon_dir/src/ngx_stream_lua_ssl_client_helloby.c \
                $ngx_addon_dir/src/ngx_stream_lua_ssl_certby.c \
                $ngx_addon_dir/src/ngx_stream_lua_log_ringbuf.c \
                $ngx_addon_dir/src/ngx_stream_lua_input_filters.c \
                "

STREAM_LUA_DEPS=" \
                $ngx_addon_dir/src/ddebug.h \
                $ngx_addon_dir/src/ngx_stream_lua_autoconf.h \
                $ngx_addon_dir/src/api/ngx_stream_lua_api.h \
                $ngx_addon_dir/src/ngx_stream_lua_request.h \
                $ngx_addon_dir/src/ngx_stream_lua_common.h \
                $ngx_addon_dir/src/ngx_stream_lua_lex.h \
                $ngx_addon_dir/src/ngx_stream_lua_contentby.h \
                $ngx_addon_dir/src/ngx_stream_lua_util.h \
                $ngx_addon_dir/src/ngx_stream_lua_cache.h \
                $ngx_addon_dir/src/ngx_stream_lua_clfactory.h \
                $ngx_addon_dir/src/ngx_stream_lua_pcrefix.h \
                $ngx_addon_dir/src/ngx_stream_lua_uthread.h \
                $ngx_addon_dir/src/ngx_stream_lua_coroutine.h \
                $ngx_addon_dir/src/ngx_stream_lua_output.h \
                $ngx_addon_dir/src/ngx_stream_lua_consts.h \
                $ngx_addon_dir/src/ngx_stream_lua_log.h \
                $ngx_addon_dir/src/ngx_stream_lua_string.h \
                $ngx_addon_dir/src/ngx_stream_lua_control.h \
                $ngx_addon_dir/src/ngx_stream_lua_sleep.h \
                $ngx_addon_dir/src/ngx_stream_lua_phase.h \
                $ngx_addon_dir/src/ngx_stream_lua_ctx.h \
                $ngx_addon_dir/src/ngx_stream_lua_script.h \
                $ngx_addon_dir/src/ngx_stream_lua_shdict.h \
                $ngx_addon_dir/src/ngx_stream_lua_timer.h \
                $ngx_addon_dir/src/ngx_stream_lua_config.h \
                $ngx_addon_dir/src/api/ngx_stream_lua_api.h \
                $ngx_addon_dir/src/ngx_stream_lua_misc.h \
                $ngx_addon_dir/src/ngx_stream_lua_initby.h \
                $ngx_addon_dir/src/ngx_stream_lua_initworkerby.h \
                $ngx_addon_dir/src/ngx_stream_lua_socket_tcp.h \
                $ngx_addon_dir/src/ngx_stream_lua_socket_udp.h \
                $ngx_addon_dir/src/ngx_stream_lua_args.h \
                $ngx_addon_dir/src/ngx_stream_lua_ssl.h \
                $ngx_addon_dir/src/ngx_stream_lua_balancer.h \
                $ngx_addon_dir/src/ngx_stream_lua_logby.h \
                $ngx_addon_dir/src/ngx_stream_lua_prereadby.h \
                $ngx_addon_dir/src/ngx_stream_lua_semaphore.h \
                $ngx_addon_dir/src/ngx_stream_lua_ssl_client_helloby.h \
                $ngx_addon_dir/src/ngx_stream_lua_ssl_certby.h \
                $ngx_addon_dir/src/ngx_stream_lua_log_ringbuf.h \
                $ngx_addon_dir/src/ngx_stream_lua_input_filters.h \
                "

# ----------------------------------------

ngx_feature="export symbols by default (-E)"
ngx_feature_libs="-Wl,-E"
ngx_feature_name=
ngx_feature_run=no
ngx_feature_incs="#include <stdio.h>"
ngx_feature_path=
ngx_feature_test='printf("hello");'

. auto/feature

if [ $ngx_found = yes ]; then
    CORE_LIBS="-Wl,-E $CORE_LIBS"
fi

# ----------------------------------------

# for Cygwin
ngx_feature="export symbols by default (--export-all-symbols)"
ngx_feature_libs="-Wl,--export-all-symbols"
ngx_feature_name=
ngx_feature_run=no
ngx_feature_incs="#include <stdio.h>"
ngx_feature_path=
ngx_feature_test='printf("hello");'

. auto/feature

if [ $ngx_found = yes ]; then
    CORE_LIBS="-Wl,--export-all-symbols $CORE_LIBS"
fi

# ----------------------------------------

ngx_feature="SO_PASSCRED"
ngx_feature_libs=
ngx_feature_name="NGX_STREAM_LUA_HAVE_SO_PASSCRED"
ngx_feature_run=no
ngx_feature_incs="#include <sys/types.h>
#include <sys/socket.h>"
ngx_feature_path=
ngx_feature_test='setsockopt(1, SOL_SOCKET, SO_PASSCRED, NULL, 0);'

. auto/feature

# ----------------------------------------

ngx_feature="SA_RESTART"
ngx_feature_libs=
ngx_feature_name="NGX_STREAM_LUA_HAVE_SA_RESTART"
ngx_feature_run=no
ngx_feature_incs="#include <signal.h>"
ngx_feature_path=
ngx_feature_test='struct sigaction act;
                  act.sa_flags |= SA_RESTART;'

. auto/feature

# ----------------------------------------

if [ -n "$ngx_module_link" ]; then
    ngx_module_type=STREAM
    ngx_module_name=$ngx_addon_name
    ngx_module_deps="$STREAM_LUA_DEPS"
    ngx_module_srcs="$STREAM_LUA_SRCS"

    . auto/module
else
    STREAM_MODULES="$STREAM_MODULES $ngx_addon_name"
    NGX_ADDON_SRCS="$NGX_ADDON_SRCS $STREAM_LUA_SRCS"
    NGX_ADDON_DEPS="$NGX_ADDON_DEPS $STREAM_LUA_DEPS"

    CORE_INCS="$CORE_INCS $ngx_module_incs"
    CORE_LIBS="$CORE_LIBS $ngx_module_libs"
fi

# ----------------------------------------

USE_MD5=YES
USE_SHA1=YES

#NGX_DTRACE_PROVIDERS="$NGX_DTRACE_PROVIDERS $ngx_addon_dir/dtrace/ngx_lua_provider.d"
#NGX_TAPSET_SRCS="$NGX_TAPSET_SRCS $ngx_addon_dir/tapset/ngx_lua.stp"

CORE_INCS="$CORE_INCS $ngx_addon_dir/src/api"

echo "/* DO NOT EDIT! This file was automatically generated by config */" > "$ngx_addon_dir/src/ngx_stream_lua_autoconf.h"