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# -*- Autoconf -*-
# Process this file with autoconf to produce a configure script.
AC_INIT([sctjudge], [1.0-rc3], [lantw44@gmail.com])
AM_INIT_AUTOMAKE([foreign -Wall])
AM_SILENT_RULES([yes])
AC_CONFIG_SRCDIR([src/main.c])
AC_CONFIG_HEADERS([src/config.h])
AC_CONFIG_FILES([Makefile sctjudge.spec src/Makefile src/version.h])
releasedate="2012-11-15"
rpmversion="1.0"
# Checks for programs.
AC_PROG_CC
AM_PROG_CC_C_O
# 寫入版本資訊
AC_SUBST([PROGRAM_NAME], [AC_PACKAGE_NAME])
AC_SUBST([PROGRAM_VERSION], [AC_PACKAGE_VERSION])
AC_SUBST([PROGRAM_RPMVERSION], $rpmversion)
AC_SUBST([PROGRAM_DATE], $releasedate)
# 提早離開 configure 的途徑
AC_ARG_ENABLE([check],
[AS_HELP_STRING([--disable-check],
[skip all checks])],
[opt_check=$enableval], [opt_check=yes])
if test x"${opt_check}" = xno; then \
AC_OUTPUT
echo "WARNING: ALL CHECKS ARE SKIPPED!"
echo "WARNING: Generated Makefile(s) cannot be used to build the package!"
exit 0
fi
# 和預設的 CFLAGS 說再見
test -n "${CFLAGS}" && CFLAGS="-g"
# 偵錯很重要，但使用者應該不需要
AC_ARG_ENABLE([debug],
[AS_HELP_STRING([--enable-debug],
[produce debugging information and disable
optimization in binary files])],
[opt_debug=$enableval], [opt_debug=no])
if test -n "${CFLAGS}"; then
if test x"${opt_debug}" = xyes; then
CFLAGS="-g"
else
CFLAGS="-O2"
fi
fi
# 靜態連結，如果想做 portable 版本的話
AC_ARG_ENABLE([static],
[AC_HELP_STRING([--enable-static],
[statically link all executables])],
[opt_static=$enableval], [opt_static=no])
AM_CONDITIONAL([STATIC_EXEC], [test x"${opt_static}" = xyes])
# 有些功能是選用的......
AC_ARG_ENABLE([procmon],
[AS_HELP_STRING([--enable-procmon],
[enable process monitor using Linux proc filesystem])],
[opt_procmon=$enableval], [opt_procmon=no])
test x"${opt_procmon}" = xyes && \
AC_DEFINE([HAVE_CONF_PROCMON], [1], [Process Monitor])
AC_ARG_ENABLE([cap],
[AS_HELP_STRING([--enable-cap],
[using Linux capabilities instead of standard UNIX permission])],
[opt_cap=$enableval], [opt_cap=no])
test x"${opt_cap}" = xyes && \
AC_DEFINE([HAVE_CONF_CAP], [1], [Linux Capabilities])
# 可以設定 /dev/null 名稱
AC_ARG_WITH([null],
AS_HELP_STRING([--with-null=NULL],
[set the path of the data sink (default: /dev/null)]),
[with_null=$withval], [with_null=/dev/null])
AC_CHECK_FILE([${with_null}],
[AC_DEFINE_UNQUOTED([NULL_DEVICE], ["${with_null}"],
[Path of the data sink])],
[AC_MSG_ERROR([${with_null} does not exist])])
# 可以設定 proc filesystem 在哪裡
AC_ARG_WITH([proc],
AS_HELP_STRING([--with-proc=PROC],
[set the location of your Linux proc file system]),
[with_proc=$withval], [with_proc=/proc])
if test x"${opt_procmon}" = xyes; then \
AC_CHECK_FILES([${with_proc}/stat ${with_proc}/$$/stat ${with_proc}/$$/statm ${with_proc}/$$/status],
[AC_DEFINE_UNQUOTED([PROC_PATH], ["${with_proc}"],
[Location of Linux proc file system])],
[AC_MSG_ERROR([Linux proc file system support is incomplete])])
fi
# Checks for libraries.
AC_CHECK_LIB([pthread], [pthread_create], [LIBS="$LIBS -lpthread -lrt"],
[test_nort=yes], [-lrt])
if test x"$test_nort" = xyes; then
AC_CHECK_LIB([pthread], [pthread_create], [LIBS="$LIBS -lpthread"],
[AC_MSG_ERROR([POSIX Thread Library is required])])
fi
AC_CHECK_LIB([c], [sem_timedwait], [true],
[AC_MSG_ERROR([Semaphore support is required])], ["$LIBS"])
if test x"${opt_cap}" = xyes; then
checkliblist="cap_init cap_clear_flag cap_set_proc"
for i in $checkliblist; do
AC_CHECK_LIB([cap], $i, [true],
AC_MSG_ERROR(You must install libcap-devel or use --disable-cap))
done
# Checks for programs
AC_CHECK_PROG([have_prog_setcap],[setcap],[yes],[no])
test x"${have_prog_setcap}" = xno &&
AC_MSG_ERROR(setcap does not exist in your PATH)
LIBS="$LIBS -lcap"
fi
AM_CONDITIONAL([USING_SETCAP], [test x"${opt_cap}" = xyes])
# Checks for header files.
AC_CHECK_HEADERS([fcntl.h locale.h stdlib.h string.h sys/time.h unistd.h])
if test x"${opt_cap}" = xyes; then
AC_CHECK_HEADERS([sys/prctl.h sys/capability.h], [],
[AC_MSG_ERROR(You must install these files or use --disable-cap)])
fi
# Checks for typedefs, structures, and compiler characteristics.
AC_TYPE_UID_T
AC_TYPE_MODE_T
AC_TYPE_PID_T
AC_TYPE_SIZE_T
# Checks for library functions.
AC_FUNC_FORK
AC_FUNC_MALLOC
AC_CHECK_FUNCS([clock_gettime dup2 memset setlocale strchr strerror strrchr getuid getpid setpgid wait4 fcntl fchown open close setrlimit chmod unlink],
[], AC_MSG_ERROR(This program requires all these functions!))
AC_CHECK_FUNCS([getpwnam getgrnam getpwuid getgrgid],
opt_ugidname=yes, opt_ugidname=no)
test x"${opt_ugidname}" = xyes && \
AC_DEFINE([HAVE_CONF_UGIDNAME], [1],
[Conversion between user or group ID and name])
AC_OUTPUT
confmsgsave="config.msg"
echo "" | tee "$confmsgsave"
echo "Optional Features:" | tee -a "$confmsgsave"
echo "(1) Conversion between user or group ID and name .... $opt_ugidname" | tee -a "$confmsgsave"
echo "(2) Process monitor using Linux proc filesystem ..... $opt_procmon" | tee -a "$confmsgsave"
echo "(3) Linux capabilities support ...................... $opt_cap" | tee -a "$confmsgsave"
echo "-------------------------------------------------------------" | tee -a "$confmsgsave"
echo "Compiling and Linking Options:" | tee -a "$confmsgsave"
echo "(1) Debugging information ........................... $opt_debug" | tee -a "$confmsgsave"
echo "(2) Statically linked executable .................... $opt_static" | tee -a "$confmsgsave"
echo "-------------------------------------------------------------" | tee -a "$confmsgsave"
echo "Strings:" | tee -a "$confmsgsave"
echo "(1) Linux proc filesystem path ...................... $with_proc" | tee -a "$confmsgsave"
echo "(2) Data sink path .................................. $with_null" | tee -a "$confmsgsave"
echo "The above messages has been written to $confmsgsave"
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