configure: longdouble: check more libm functions

On armv7hf NetBSD libm doesn't provide ldexpl frexpl functions while
provides sinl cosl tanl logl and expl apparently. To sanitize the
autodetection of long double we need to add them to the list.

src/aclocal.m4

@@ -6,7 +6,7 @@ AC_DEFUN([ECL_LONG_DOUBLE],[
 if test "$enable_longdouble" != "no" ; then
 AC_CHECK_TYPES([long double],[enable_longdouble=yes],[enable_longdouble=no])
 if test "$enable_longdouble" != "no" ; then
-AC_CHECK_FUNCS([sinl cosl tanl logl expl],[],[enable_longdouble=no; break])
+AC_CHECK_FUNCS([sinl cosl tanl logl expl ldexpl frexpl],[],[enable_longdouble=no; break])
 if test "$enable_longdouble" != "no" ; then
 AC_DEFINE([ECL_LONG_FLOAT], [], [ECL_LONG_FLOAT])
 fi

src/configure

@@ -8050,7 +8050,7 @@ else
 fi
 
 if test "$enable_longdouble" != "no" ; then
-for ac_func in sinl cosl tanl logl expl
+for ac_func in sinl cosl tanl logl expl ldexpl frexpl
 do :
   as_ac_var=`$as_echo "ac_cv_func_$ac_func" | $as_tr_sh`
 ac_fn_c_check_func "$LINENO" "$ac_func" "$as_ac_var"

src/configure.ac

@@ -428,6 +428,8 @@ if test "x${with_system_gmp}" = "xno" ; then
   else
     GMP_ABI="ABI=$ABI"
   fi
+  # Crosscompilation for Android on Darwin requires replacing 'NM=nm'
+  # below with 'NM=$PLATFORM_PREFIX/bin/arm-linux-androideabi-nm'.
   mkdir gmp
   dnl Notice we need -DPIC to force the assembler to generate PIC code
   (destdir=`${PWDCMD}`; cd gmp && CC="${CC} ${PICFLAG}" \

src/ecl/configpre.h

@@ -150,6 +150,9 @@
 /* Define to 1 if you have the `frexpf' function. */
 #undef HAVE_FREXPF
 
+/* Define to 1 if you have the `frexpl' function. */
+#undef HAVE_FREXPL
+
 /* Define to 1 if you have the `fseeko' function. */
 #undef HAVE_FSEEKO
 
@@ -183,6 +186,9 @@
 /* Define to 1 if you have the `ldexpf' function. */
 #undef HAVE_LDEXPF
 
+/* Define to 1 if you have the `ldexpl' function. */
+#undef HAVE_LDEXPL
+
 /* HAVE_LIBFFI */
 #undef HAVE_LIBFFI