标签:style color io os ar for sp on amp
最初是在auto/options
脚本中初始化的:
CC=${CC:-gcc}
Windows 平台的编译器叫做MSVC
,其他平台的都统称为C Compiler
。
该脚本并不复杂,首先通过NGX_PLATFORM
变量来判断是否是win32
(该变量是在auto/options
中初始化的),如果是,则:
ngx_feature="C compiler"
ngx_feature_name=
ngx_feature_run=yes
ngx_feature_incs=
ngx_feature_path=
ngx_feature_libs=
ngx_feature_test=
. auto/feature
其中,ngx_feature
变量为C compiler
,然后初始化其他一些与 feature 相关的变量,再引用auto/feature
脚本。
ngx_found
表示编译器是否存在,判断ngx_found
变量如果是no
(该变量是在auto/feature
脚本中被置值的),则:
echo
echo $0: error: C compiler $CC is not found
echo
exit 1
即如果编译器不存在,就退出自动脚本运行。
if `$NGX_WINE $CC -v 2>&1 | grep ‘^Microsoft (R) 32-bit C/C++ Optimizing Compiler Version 16‘ >/dev/null 2>&1`; then
NGX_CC_NAME=msvc10
echo " + using Microsoft Visual C++ 10 compiler"
else if `$NGX_WINE $CC -v 2>&1 | grep ‘^Microsoft (R) 32-bit C/C++ Optimizing Compiler Version 14‘ >/dev/null 2>&1`; then
NGX_CC_NAME=msvc8
echo " + using Microsoft Visual C++ 8 compiler"
else if `$NGX_WINE $CC -v 2>&1 | grep ‘^Microsoft (R) 32-bit C/C++ Optimizing Compiler Version 13‘ >/dev/null 2>&1`; then
NGX_CC_NAME=msvc7
echo " + using Microsoft Visual C++ 7 compiler"
else
NGX_CC_NAME=msvc
echo " + using Microsoft Visual C++ compiler"
fi
fi
fi
else
if [ "$CC" = wcl386 ]; then
NGX_CC_NAME=owc
echo " + using Open Watcom C compiler"
else
if [ "$CC" = bcc32 ]; then
NGX_CC_NAME=bcc
echo " + using Borland C++ compiler"
else
if `$CC -v 2>&1 | grep ‘gcc version‘ >/dev/null 2>&1`; then
NGX_CC_NAME=gcc
echo " + using GNU C compiler"
else
if `$CC -V 2>&1 | grep ‘^Intel(R) C‘ >/dev/null 2>&1`; then
NGX_CC_NAME=icc
echo " + using Intel C++ compiler"
else
if `$CC -V 2>&1 | grep ‘Sun C‘ >/dev/null 2>&1`; then
NGX_CC_NAME=sunc
echo " + using Sun C compiler"
else
if `$CC -V 2>&1 | grep ‘^Compaq C‘ >/dev/null 2>&1`; then
NGX_CC_NAME=ccc
echo " + using Compaq C compiler"
else
if `$CC -V 2>&1 | grep ‘^aCC: ‘ >/dev/null 2>&1`; then
NGX_CC_NAME=acc
echo " + using HP aC++ compiler"
else
NGX_CC_NAME=unknown
解剖Nginx·自动脚本篇(6)编译器名称变量脚本 auto/cc/name
标签:style color io os ar for sp on amp
原文地址:http://www.cnblogs.com/breg/p/4043719.html