From da59fc80814cf4bebd52bfd5cde3ec2073a453c7 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Daniel=20Kochma=C5=84ski?= <daniel@turtleware.eu>
Date: Mon, 30 May 2016 10:01:55 +0200
Subject: [PATCH] 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      | 2 +-
 src/configure       | 2 +-
 src/configure.ac    | 2 ++
 src/ecl/configpre.h | 6 ++++++
 4 files changed, 10 insertions(+), 2 deletions(-)

diff --git a/src/aclocal.m4 b/src/aclocal.m4
index 3e93a53d3..174f8d4f1 100644
--- a/src/aclocal.m4
+++ b/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
diff --git a/src/configure b/src/configure
index 0b7d1c72f..eb41506fe 100755
--- a/src/configure
+++ b/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"
diff --git a/src/configure.ac b/src/configure.ac
index 137c8b74b..3cd387e09 100644
--- a/src/configure.ac
+++ b/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}" \
diff --git a/src/ecl/configpre.h b/src/ecl/configpre.h
index 2cbbdc5f3..6e42e2397 100644
--- a/src/ecl/configpre.h
+++ b/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