#-*- Autoconf -*-

# Process this file with autoconf to produce a configure script.



AC_PREREQ(2.5)

AC_INIT([pbc], [0.4.7], [blynn@cs.stanford.edu])

AM_INIT_AUTOMAKE(pbc,0.4.7)

AM_CONFIG_HEADER(config.h)

AC_CONFIG_SRCDIR([./])

AC_PROG_LIBTOOL

#AC_CANONICAL_HOST



CFLAGS=

default_fink_path=/PBC-0.4.7-vc-c 

case $host_os in

     darwin*) 

     	      dnl nested function support

     	      AC_MSG_NOTICE([Adding -fnested-functions to CFLAGS])

	      CFLAGS="-fnested-functions"



	      dnl fink installation

     	      AC_MSG_CHECKING([for a fink installation at $default_fink_path])

     	      if test -d $default_fink_path; then 

	      	 AC_MSG_RESULT([found it!])

		 AC_MSG_NOTICE([Adding -I$default_fink_path/include to CPPFLAGS])

	      	 CPPFLAGS="-I$default_fink_path/include $CPPFLAGS"

		 AC_MSG_NOTICE([Adding -L$default_fink_path/lib to LDFLAGS])

		 LDFLAGS="-L$default_fink_path/lib $LDFLAGS"

	      else

		AC_MSG_RESULT(none)

		AC_MSG_NOTICE([You may need to add set CPPFLAGS and LDFLAGS for gmp, etc.])

	      fi

	      ;;

esac



# Checks for programs.

AC_PROG_CC

AC_PROG_CPP

AC_PROG_INSTALL

AC_PROG_LN_S

AC_PROG_MAKE_SET



# Checks for libraries.

lib_err_msg="add its path to LDFLAGSnsee ./configure --help"

AC_CHECK_LIB( [m], [pow], [],[

	      echo "************************"

	      echo "m library not found"

	      echo -e $lib_err_msg

	      echo "************************"

	      exit -1

	      ])

AC_CHECK_LIB( [gmp], [__gmpz_init], [],[

	      echo "************************"

	      echo "gmp library not found"

	      echo -e $lib_err_msg

	      echo "************************"

	      exit -1

	      ])

dnl Reset libs because most programs do not need to link against all of these libs.

LIBS=



# Checks for header files.

AC_FUNC_ALLOCA

AC_HEADER_STDC

AC_CHECK_HEADERS([stdlib.h string.h sys/time.h])



# Checks for typedefs, structures, and compiler characteristics.

AC_C_CONST

AC_C_INLINE

AC_TYPE_SIZE_T

AC_HEADER_TIME



dnl setup CFLAGS

AC_ARG_ENABLE( optimized, 

	       [AC_HELP_STRING([--enable-optimized],

			[Enable optimized build])],

         [with_enable_optimized="$withval"],

	 [with_enable_optimized="no"])



CFLAGS="$CFLAGS -O2 -Wall -W -Wfloat-equal -Wpointer-arith -Wcast-align -Wstrict-prototypes -Wredundant-decls 

-Wendif-labels -Wshadow -pipe -ffast-math -U__STRICT_ANSI__ -std=c99"

if test "x$with_enable_optimized" != "no"; then

   	CFLAGS="$CFLAGS -g"

else

	CFLAGS="$CFLAGS -fomit-frame-pointer -O3"

fi



# Checks for library functions.

AC_FUNC_MALLOC

AC_FUNC_REALLOC

AC_CHECK_FUNCS([floor gettimeofday memmove memset pow sqrt strchr strdup])



AC_CONFIG_FILES([Makefile example/Makefile gen/Makefile])

AC_OUTPUT



echo -ne "n"

echo "global build variables"

echo "-----------------------------------------"

echo `date`

echo "host info:        $host"

echo "optimized build:  $with_enable_optimized"

echo "LDFLAGS:          $LDFLAGS"

echo "CPPFLAGS:         $CPPFLAGS"

echo "CFPLAGS:          $CFLAGS"

echo "-----------------------------------------"

echo -ne "n"

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