bfin-xxx-gcc-4.3.1中config.status的生成及运行（7）：创建临时目录
快乐虾
http://blog.csdn.net/lights_joy/
本文适用于
gcc- 4.3.1
Blackfin系列DSP
Visual Studio 2005
欢迎转载，但请保留作者信息
cat >>$CONFIG_STATUS <</_ACEOF
for ac_config_target in $ac_config_targets
do
case "$ac_config_target" in
# Handling of arguments.
"as" ) CONFIG_FILES="$CONFIG_FILES as:exec-tool.in" ;;
"collect-ld" ) CONFIG_FILES="$CONFIG_FILES collect-ld:exec-tool.in" ;;
"nm" ) CONFIG_FILES="$CONFIG_FILES nm:exec-tool.in" ;;
"$all_outputs" ) CONFIG_FILES="$CONFIG_FILES $all_outputs" ;;
"default" ) CONFIG_COMMANDS="$CONFIG_COMMANDS default" ;;
"auto-host.h" ) CONFIG_HEADERS="$CONFIG_HEADERS auto-host.h:config.in" ;;
*) { { echo "$as_me:$LINENO: error: invalid argument: $ac_config_target" >&5
echo "$as_me: error: invalid argument: $ac_config_target" >&2;}
{ (exit 1); exit 1; }; };;
esac
done
# If the user did not use the arguments to specify the items to instantiate,
# then the envvar interface is used. Set only those that are not.
# We use the long form for the default assignment because of an extremely
# bizarre bug on SunOS 4.1.3 .
if $ac_need_defaults; then
test "${CONFIG_FILES+set}" = set || CONFIG_FILES=$config_files
test "${CONFIG_HEADERS+set}" = set || CONFIG_HEADERS=$config_headers
test "${CONFIG_COMMANDS+set}" = set || CONFIG_COMMANDS=$config_commands
fi
# Have a temporary directory for convenience. Make it in the build tree
# simply because there is no reason to put it here, and in addition,
# creating and moving files from /tmp can sometimes cause problems.
# Create a temporary directory, and hook for its removal unless debugging.
$debug ||
{
trap 'exit_status=$?; rm -rf $tmp && exit $exit_status' 0
trap '{ (exit 1); exit 1; }' 1 2 13 15
}
# Create a (secure) tmp directory for tmp files.
{
tmp=`(umask 077 && mktemp -d -q "./confstatXXXXXX") 2>/dev/null` &&
test -n "$tmp" && test -d "$tmp"
} ||
{
tmp=./confstat$$-$RANDOM
(umask 077 && mkdir $tmp)
} ||
{
echo "$me: cannot create a temporary directory in ." >&2
{ (exit 1); exit 1; }
}
_ACEOF
在输出的这一段代码中，由于$ac_config_targets为空，因此第一个for循环将不会执行。再下来，由于$ac_needs_defaults非空，因此对$CONFIG_FILES, $CONFIG_HEADERS, $CONFIG_COMMANDS三个变量进行赋值，经过这一步后，有如下几个值：
$CONFIG_FILES=" as:exec-tool.in collect-ld:exec-tool.in nm:exec-tool.in Makefile gccbug libada-mk "
$CONFIG_HEADERS =" auto-host.h:config.in"
$CONFIG_COMMANDS =" default"
在这段代码的最后，创建了一个临时目录。
参考资料
无心插柳－在vs2005中编译GCC4( 2008-1-13 )
gcc交叉编译的实现( 2008-1-25 )
在vs2005下编译gcc：工程文件( 2008-1-30 )
从asm_out_file看gcc汇编代码的生成( 2008-1-30 )
gcc4.1中的machine_mode( 2008-2-1 )
gcc 4.3 configure脚本学习（1）：前言( 2008-4-23 )
gcc 4.3 configure脚本学习（2）：Be Bourne compatible( 2008-4-24 )
gcc 4.3 configure脚本学习（3）：NLS nuisances( 2008-4-24 )
bfin-gcc-4.3.1中config.h的生成( 2008-8-5 )
bfin-xxx-gcc-4.3.1中config.status的生成及运行（1）：输出注释( 2008-8-5 )
bfin-xxx-gcc-4.3.1中config.status的生成及运行（2）：Shell检测( 2008-8-5 )
bfin-xxx-gcc-4.3.1中config.status的生成及运行（3）：文件配置( 2008-8-6 )
bfin-xxx-gcc-4.3.1中config.status的生成及运行（4）：帮助信息输出( 2008-8-6 )
bfin-xxx-gcc-4.3.1中config.status的生成及运行（5）：参数判断( 2008-8-6 )
bfin-xxx-gcc-4.3.1中config.status的生成及运行（6）：子目录获取( 2008-8-6 )