linux之autoconf/automake

gun build system官網位址：

​​​Software- GNU Project - Free Software Foundation​​

​​Autoconf​​

簡介：Autoconf is a tool for producing shell scripts that automatically configure software source code packages to adapt to many kinds of Posix-like systems

​​automake​​

​​Libtool​​

一般流程如下

1.  autoscan (autoconf):掃描源代碼以搜尋普通的可移植性問題，比如檢查編譯器，庫，頭檔案等，生成檔案configure.scan,它是configure.ac的一個雛形

your source files --> [autoscan*] --> [configure.scan] --> configure.ac

 源檔案：

#include <unistd.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <stddef.h>
#include <assert.h>
#include <ctype.h>
#include <math.h>
#include <errno.h>
#include <limits.h>
#include <stdint.h>

int main()
{
        return 0;
}      

執行autoscan, 生成configure.scan和autoscan.log， 将 configure.scan 重命名為 configure.ac

root@ubuntu2004:/media/tmp/test_autoconf# autoscan
root@ubuntu2004:/media/tmp/test_autoconf# ls -al
total 16
drwxr-xr-x 2 root root 4096 Apr 11 17:20 .
drwxr-xr-x 3 root root 4096 Apr 11 17:01 ..
-rw-r--r-- 1 root root    0 Apr 11 17:21 autoscan.log
-rw-r--r-- 1 root root  540 Apr 11 17:21 configure.scan
-rw-r--r-- 1 root root  249 Apr 11 17:18 test.c      

#configure.ac
#
#                                               -*- Autoconf -*-
# Process this file with autoconf to produce a configure script.

AC_PREREQ([2.69])
AC_INIT([FULL-PACKAGE-NAME], [VERSION], [BUG-REPORT-ADDRESS])
AC_CONFIG_SRCDIR([test.c])
AC_CONFIG_HEADERS([config.h])

# Checks for programs.
AC_PROG_CC

# Checks for libraries.

# Checks for header files.
AC_CHECK_HEADERS([limits.h stddef.h stdint.h stdlib.h string.h unistd.h])

# Checks for typedefs, structures, and compiler characteristics.

# Checks for library functions.

AC_OUTPUT