# Require a recent version of autotools
AC_PREREQ(2.59)

# Auto conf init
AC_INIT([42sh],[1.0],[seblu@seblu.net], [42sh])

# Define configure generator directory
AC_CONFIG_AUX_DIR([build])

# Auto Make init
AM_INIT_AUTOMAKE([subdir-objects foreign dist-bzip2 no-dist-gzip])

echo "checking CFLAGS..."
# Check platform
AC_CANONICAL_HOST

case $host_os in
     *osf*)
	CFLAGS='-Wall -W -ansi -pedantic -D_XOPEN_SOURCE=600'
	;;
     *solaris*)
	CFLAGS='-Wall -W -ansi -pedantic -D_XOPEN_SOURCE=600'
	;;
     *linux*|*netbsd*)
	CFLAGS='-Wall -Wextra -std=c99 -pedantic -D_XOPEN_SOURCE=600 -pipe'
	;;
     *darwin*)
	CFLAGS='-Wall -W -std=c99 -pedantic -D_XOPEN_SOURCE=600 -pipe'
	;;
  *)
       pl="`uname -s`"
       AC_MSG_ERROR([Platform $pl not supported.])
       ;;
esac

# Check for C compiler
AC_LANG([C])
AC_PROG_CC

# Check for Make
AC_PROG_MAKE_SET

# check for ranlib
AC_PROG_RANLIB

# Check for lib efence
AC_CHECK_LIB([efence], [malloc], [EFENCELIB=-lefence])
AC_SUBST([EFENCELIB])

# Checks for library functions.
AC_FUNC_MALLOC
AC_FUNC_CLOSEDIR_VOID
AC_FUNC_REALLOC
AC_FUNC_FORK
AC_FUNC_STAT
AC_HEADER_DIRENT
AC_HEADER_SYS_WAIT
AC_CHECK_HEADERS([malloc.h])
AC_CHECK_FUNCS([strtol])
AC_CHECK_FUNCS([dup])
AC_CHECK_FUNCS([dup2])
AC_CHECK_FUNCS([strchr])
AC_CHECK_FUNCS([strdup])
AC_CHECK_FUNCS([getcwd])
AC_CHECK_FUNCS([setenv])
AC_CHECK_FUNCS([strdup])
AC_CHECK_FUNCS([strstr])
AC_CHECK_FUNCS([atexit])
AC_CHECK_FUNCS([putenv])
AC_CHECK_FUNCS([strtoul])
AC_CHECK_FUNCS([strerror])

AC_TYPE_PID_T
AC_TYPE_SIZE_T

# Checks for typedefs, structures, and compiler characteristics.
AC_C_CONST
AC_HEADER_STDBOOL
AC_STRUCT_TM

# Check for headers
AC_CHECK_HEADERS([sys/param.h unistd.h])
AC_CHECK_HEADERS([fcntl.h])
AC_CHECK_HEADERS([libintl.h])
AC_CHECK_HEADERS([stddef.h])
AC_CHECK_HEADERS([limits.h])

dnl Memo:
dnl AC ARG WITH(package, help-string, [action-if-given], [action-if-not-given])
AC_ARG_WITH([noerror],
  [AS_HELP_STRING([--with-noerror], [Warning dont create compilation error])],
  [dnl action-if-given
       true
  ],
  [dnl action-if-not-given
       CFLAGS="$CFLAGS -Werror"
  ]
)

AC_ARG_WITH([debug],
  [AS_HELP_STRING([--with-debug], [use -g and don't use -DNDEBUG -O3])],
  [dnl action-if-given
       CFLAGS="$CFLAGS -g"
  ],
  [dnl action-if-not-given
      CFLAGS="$CFLAGS -DNDEBUG -O3"
  ]
)

AC_ARG_WITH([efence],
  [AS_HELP_STRING([--with-efence], [link with lib efence])],
  [dnl action-if-given
       LDFLAGS="$LDFLAGS -lefence"
       test -r "/usr/include/efence.h" &&
	    CFLAGS="$CFLAGS -include stdlib.h -include efence.h"
  ],
  [dnl action-if-not-given
  	true
  ]
)

AC_SUBST([CFLAGS])
AC_SUBST([LDFLAGS])

# define Autoconf config header
AC_CONFIG_HEADERS([config.h])

# define Autoconf config files
AC_CONFIG_FILES([
	Makefile
	doc/Makefile
])

AC_OUTPUT