dnl Process this file with autoconf to produce a configure script.
AC_INIT()
AM_INIT_AUTOMAKE(mpfr,1.0,PACKAGE,VERSION)

AC_ARG_WITH(gmp_include, [ --with-gmp-include=DIR  GMP include directory ], with_gmp_include=$withval)
AC_ARG_WITH(gmp_lib, [ --with-gmp-lib=DIR      GMP lib directory ], with_gmp_lib=$withval)
AC_ARG_WITH(gmp, [ --with-gmp=DIR          GMP directory ], with_gmp_include=$withval/include with_gmp_lib=$withval/lib)

AC_ARG_WITH(irix64, [ --with-irix64=on/off    Irix 32/64 bits support ], with_irix64=$withval, with_irix64=off)

dnl Checks for programs.
AC_PROG_CC
AC_PROG_RANLIB
AC_CHECK_OS
AC_CHECK_MACHTYPE

dnl If compiler is gcc, then use some warning flags
if test -n "$GCC"; then
  CFLAGS="$CFLAGS -Wall -Wmissing-prototypes"
fi

MISCFLAGS='$<' 
dnl Mettre les flags OS dependants
case $OS_TYPE in 
	HP-UX*)
		AC_CHECK_LIB(M, main);;
	SunOS*)
		MISCFLAGS="trunc.c" 
		AC_CHECK_LIB(m, main)
		;;
	Linux*)
		AC_CHECK_LIB(m, main)
		fpucw=`grep __setfpucw /usr/include/fpu_control.h`
	        if test -z "$fpucw"; 
		then AC_DEFINE(LIBC211) fi; 
		if [[ "$MACHTYPE" = "alpha" ]];
		then
		CFLAGS ="$CFLAGS -mfp-rounding-mode=d -mieee-with-inexact"
		fi;;
	IRIX64)
		AC_CHECK_LIB(m, main)
		if [[ "$irix64" = "on" ]]
		then
		CFLAGS ="-mabi=64 $CFLAGS"
		else
		CFLAGS ="-mabi=n32 $CFLAGS"
		fi;;
	OSF*)
		AC_CHECK_LIB(m, main)
		CFLAGS="$CFLAGS -mfp-rounding-mode=d -mieee-with-inexact -ffloat-store"
		AC_DEFINE(__STDC__)
		;;
	HP-UX*)
		AC_DEFINE(hpux)
	        LDFLAGS="$LDFLAGS -L/lib/pa1.1"
		;;
	*)	
		AC_CHECK_LIB(m, main);;
esac

dnl Tests pour le repertoire ou trouver les fichiers include
AC_MSG_CHECKING(for gmp files)
if test -d "$with_gmp_include"; then
  CPPFLAGS="$CPPFLAGS -I$with_gmp_include"
else
  with_gmp_include=
fi
AC_TRY_COMPILE([
#include "gmp.h"
#include "gmp-impl.h"
#include "longlong.h"
], , AC_MSG_RESULT(yes),
    [AC_MSG_RESULT(no)
     AC_MSG_ERROR(gmp.h or gmp-impl.h or config.h or gmp-mparam.h or longlong.h may be missing ${with_gmp_include:+in $with_gmp_include})]
)

AC_MY_LIBS($with_gmp_lib, gmp)
AC_SUBST(INCLUDES)
AC_SUBST(LDADD)
AC_SUBST(LDFLAGS)
AC_SUBST(CFLAGS)
AC_SUBST(MISCFLAGS)
AC_OUTPUT(Makefile tests/Makefile)

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