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authorJörg Frings-Fürst <debian@jff-webhosting.net>2017-12-03 20:50:11 +0100
committerJörg Frings-Fürst <debian@jff-webhosting.net>2017-12-03 20:50:11 +0100
commit4cf52fc0bc3b80c0ef6c58c5db4413ebdafe661c (patch)
tree676b26b024117cf656080a011e3d17b8fb6889af /gnulib-m4/exponentl.m4
parent1ecbfbb92248e67b564f5b144c4671ccaa86ee2f (diff)
parent44ff3127b1e57b703c2a73a24f7ab38e4aad8ae4 (diff)
Merge branch 'release/0.9.8-1'0.9.8-1
Diffstat (limited to 'gnulib-m4/exponentl.m4')
-rw-r--r--gnulib-m4/exponentl.m422
1 files changed, 19 insertions, 3 deletions
diff --git a/gnulib-m4/exponentl.m4 b/gnulib-m4/exponentl.m4
index c49cf2c..ebfebe4 100644
--- a/gnulib-m4/exponentl.m4
+++ b/gnulib-m4/exponentl.m4
@@ -1,11 +1,12 @@
-# exponentl.m4 serial 3
-dnl Copyright (C) 2007-2016 Free Software Foundation, Inc.
+# exponentl.m4 serial 4
+dnl Copyright (C) 2007-2017 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
dnl with or without modifications, as long as this notice is preserved.
AC_DEFUN([gl_LONG_DOUBLE_EXPONENT_LOCATION],
[
AC_REQUIRE([gl_BIGENDIAN])
+ AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
AC_CACHE_CHECK([where to find the exponent in a 'long double'],
[gl_cv_cc_long_double_expbit0],
[
@@ -79,9 +80,24 @@ int main ()
[gl_cv_cc_long_double_expbit0=`cat conftest.out`],
[gl_cv_cc_long_double_expbit0="unknown"],
[
- dnl When cross-compiling, we don't know. It depends on the
+ dnl When cross-compiling, in general we don't know. It depends on the
dnl ABI and compiler version. There are too many cases.
gl_cv_cc_long_double_expbit0="unknown"
+ case "$host_os" in
+ mingw*) # On native Windows (little-endian), we know the result
+ # in two cases: mingw, MSVC.
+ AC_EGREP_CPP([Known], [
+#ifdef __MINGW32__
+ Known
+#endif
+ ], [gl_cv_cc_long_double_expbit0="word 2 bit 0"])
+ AC_EGREP_CPP([Known], [
+#ifdef _MSC_VER
+ Known
+#endif
+ ], [gl_cv_cc_long_double_expbit0="word 1 bit 20"])
+ ;;
+ esac
])
rm -f conftest.out
])