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# check for mpc library
# sets MPC_CPPFLAGS, MPC_LDFLAGS and MPC_LIBS,
# and MPC_WITH, MPC_DEPEND,
# and MPC=yes/no
AC_DEFUN([AC_CHECK_MPC],[
temp_LIBS="$LIBS"
temp_CPPFLAGS="$CPPFLAGS"
temp_LDFLAGS="$LDFLAGS"
MPC=unknown
MPC_WITH=""
MPC_DEPEND=""
AC_ARG_WITH(mpc,
[ --with-mpc=<location>
Location at which the MPC library was installed.
If the argument is omitted, the library is assumed to be reachable
under the standard search path (/usr, /usr/local,...). Otherwise
you must give the <path> to the directory which contains the
library.],
[if test "$withval" = no; then
MPC=no
elif test "$withval" = yes; then
MPC=yes
else
MPC_WITH="$MPC_WITH --with-mpc=$withval"
MPC=yes
MPC_CPPFLAGS="-I$withval/include"; MPC_LDFLAGS="-L$withval/lib"
fi]
)
AC_ARG_WITH(mpc-include,
[ --with-mpc-include=<location>
Location at which the mpc include files were installed.],
[MPC=yes
MPC_WITH="$MPC_WITH --with-mpc-include=$withval"
MPC_CPPFLAGS="-I$withval"]
)
AC_ARG_WITH(mpc-lib,
[ --with-mpc-lib=<location>
Location at which the mpc library files were installed.
],
[MPC=yes
MPC_WITH="$MPC_WITH --with-mpc-lib=$withval"
MPC_LDFLAGS="-L$withval"]
)
if test "$MPC" != no; then
if test "$MPFR" = no; then
AC_MSG_ERROR([Cannot have MPC without having MPFR too.])
fi
MPC_LIBS="-lmpc"
AC_LANG_PUSH([C])
temp_status=true
CPPFLAGS="$CPPFLAGS $MPC_CPPFLAGS $MPFR_CPPFLAGS"
AC_CHECK_HEADER(mpc.h,,[temp_status=false],[#include <mpfr.h>])
LDFLAGS="$LDFLAGS $MPC_LDFLAGS $MPFR_LDFLAGS"
AC_CHECK_LIB(mpc,mpc_sqrt,,[temp_status=false])
AC_LANG_POP([C])
if test "$temp_status" = false; then
if test "$MPC" = yes; then
AC_MSG_ERROR([library mpc not found. Using --with-mpc, specify its location, or "no" to disable it.])
else
MPC=no
fi
else
MPC=yes
fi
fi
CPPFLAGS="$temp_CPPFLAGS"
LDFLAGS="$temp_LDFLAGS"
LIBS="$temp_LIBS"
if test "$MPC" != no; then
AC_DEFINE([USE_MPC],1,[use MPC library])
fi
AC_SUBST(MPC_CPPFLAGS)
AC_SUBST(MPC_LDFLAGS)
AC_SUBST(MPC_LIBS)
AM_CONDITIONAL([WITH_MPC_IS_YES],[test x"$MPC" != xno])
])
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