stdlib/tst-strtod-round.c: Fix build on ARM

Building this test on ARM fails because the prototypes for the long
double variants of the math functions are unavailable.

Add an additional include guard to math.h that enables long double math
function declarations if _LIBC_TEST is defined and define _LIBC_TEST in
stdlib/tst-strtod-round.c.

ChangeLog:

2014-09-30  Will Newton  <will.newton@linaro.org>

	* math/math.h: Define long double math functions if
	_LIBC_TEST is defined.
	* stdlib/tst-strtod-round.c: Define _LIBC_TEST.

diff --git a/ChangeLog b/ChangeLog
index eaadc87..d7580c1 100644 (file)
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,9 @@
 2014-09-30  Will Newton  <will.newton@linaro.org>
 
+       * math/math.h: Define long double math functions if
+       _LIBC_TEST is defined.
+       * stdlib/tst-strtod-round.c: Define _LIBC_TEST.
+
        * localedata/Makefile: Move assignment to tests-special
        into an ifdef testing run-built-tests.
        * timezone/Makefile: Likewise.

diff --git a/math/math.h b/math/math.h
index 72ec2ca..dc532b7 100644 (file)
--- a/math/math.h
+++ b/math/math.h
@@ -92,7 +92,8 @@ __BEGIN_DECLS
 # undef        __MATH_PRECNAME
 
 # if !(defined __NO_LONG_DOUBLE_MATH && defined _LIBC) \
-     || defined __LDBL_COMPAT
+     || defined __LDBL_COMPAT \
+     || defined _LIBC_TEST
 #  ifdef __LDBL_COMPAT
 
 #   ifdef __USE_ISOC99

diff --git a/stdlib/tst-strtod-round.c b/stdlib/tst-strtod-round.c
index f334b20..cbde457 100644 (file)
--- a/stdlib/tst-strtod-round.c
+++ b/stdlib/tst-strtod-round.c
@@ -17,6 +17,9 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
+/* Defining _LIBC_TEST ensures long double math functions are
+   declared in the headers.  */
+#define _LIBC_TEST 1
 #include <fenv.h>
 #include <float.h>
 #include <math.h>