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# check for fplll library
# sets FPLLL_CPPFLAGS, FPLLL_LDFLAGS and FPLLL_LIBS,
# and FPLLL_WITH, FPLLL_DEPEND,
# and FPLLL=yes/no
AC_DEFUN([AC_CHECK_FPLLL],[
temp_LIBS="$LIBS"
temp_CPPFLAGS="$CPPFLAGS"
temp_LDFLAGS="$LDFLAGS"
FPLLL=unknown
FPLLL_WITH=""
FPLLL_DEPEND=""
AC_ARG_WITH(fplll,
[ --with-fplll=<location>
Location at which the FPLLL library was installed.
If the argument is omitted, the library is assumed to be reachable
under the standard search path (/usr, /usr/local,...). Otherwise
you must give the <path> to the directory which contains the
library.],
[if test "$withval" = no; then
FPLLL=no
elif test "$withval" = yes; then
FPLLL=yes
else
FPLLL_WITH="$FPLLL_WITH --with-fplll=$withval"
FPLLL=yes
FPLLL_CPPFLAGS="-I$withval/include"; FPLLL_LDFLAGS="-L$withval/lib"
fi]
)
AC_ARG_WITH(fplll-include,
[ --with-fplll-include=<location>
Location at which the fplll include files were installed.],
[FPLLL=yes
FPLLL_WITH="$FPLLL_WITH --with-fplll-include=$withval"
FPLLL_CPPFLAGS="-I$withval"]
)
AC_ARG_WITH(fplll-lib,
[ --with-fplll-lib=<location>
Location at which the fplll library files were installed.
],
[FPLLL=yes
FPLLL_WITH="$FPLLL_WITH --with-fplll-lib=$withval"
FPLLL_LDFLAGS="-L$withval"]
)
if test "$FPLLL" != no; then
if test "$MPFR" = no; then
AC_MSG_ERROR([Cannot have FPLLL without having MPFR too.])
fi
FPLLL_LIBS="-lfplll"
AC_LANG_PUSH([C++])
CPPFLAGS="$CPPFLAGS $FPLLL_CPPFLAGS $MPFR_CPPFLAGS"
AC_CHECK_HEADER(fplll.h,[found_fplll=true],[found_fplll=false],[#include <mpfr.h>])
LDFLAGS="$LDFLAGS $FPLLL_LDFLAGS $MPFR_LDFLAGS"
LIBS="$LIBS -lfplll -lgmp"
if test "$found_fplll" = true; then
AC_MSG_CHECKING([for lllReduction in -fplll (version 4.x)])
AC_LINK_IFELSE([AC_LANG_PROGRAM([#include <fplll.h>],[ZZ_mat<mpz_t> M(3,3);lllReduction(M, 0.99, 0.51, LM_WRAPPER);])],[AC_MSG_RESULT([yes]);found_fplll=4],[AC_MSG_RESULT([no]);found_fplll=false])
fi
if test "$found_fplll" = false; then
$as_unset ac_cv_header_fplll_h
AX_CXX_COMPILE_STDCXX([11],[noext],[mandatory])
AC_CHECK_HEADER(fplll.h,[found_fplll=true],[found_fplll=false],[#include <mpfr.h>])
AC_MSG_CHECKING([for lllReduction in -fplll (version 5.x)])
AC_LINK_IFELSE([AC_LANG_PROGRAM([[
#include <fplll.h>
using namespace fplll;
]],[ZZ_mat<mpz_t> M(3,3);lll_reduction(M, 0.99, 0.51, LM_WRAPPER);])],[AC_MSG_RESULT([yes]);found_fplll=5],[AC_MSG_RESULT([no]);found_fplll=false])
fi
AC_LANG_POP([C++])
if test "$found_fplll" = false; then
if test "$FPLLL" = yes; then
AC_MSG_ERROR([library fplll not found. Using --with-fplll, specify its location, or "no" to disable it.])
else
FPLLL=no
found_fplll=4
fi
else
FPLLL=yes
fi
fi
CPPFLAGS="$temp_CPPFLAGS"
LDFLAGS="$temp_LDFLAGS"
LIBS="$temp_LIBS"
if test "$FPLLL" != no; then
AC_DEFINE([USE_FPLLL],1,[use FPLLL library])
fi
AC_SUBST(FPLLL_CPPFLAGS)
AC_SUBST(FPLLL_LDFLAGS)
AC_SUBST(FPLLL_LIBS)
AM_CONDITIONAL([WITH_FPLLL_IS_YES],[test x"$FPLLL" != xno])
])
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