Move -U__LIBC_INTERNAL_MATH_INLINES to test-math-inline.h [committed]

Move -U__LIBC_INTERNAL_MATH_INLINES to test-math-inline.h [committed]

[Joseph Myers]

The libm tests of inline functions undefine __NO_MATH_INLINES (from
math-CPPFLAGS) in test-math-inline.h, but __LIBC_INTERNAL_MATH_INLINES
via -U options in the makefile.

This is an odd inconsistency between the handling of the two macros.
It also depends on the ordering (in compilation commands) of the
various variables providing compiler options (which I think is why
it's using CPPFLAGS-*.c instead of CFLAGS-*.c).

This patch moves the undefine to test-math-inline.h, so improving
consistency and eliminating the dependency on the order in which
variables go in the compilation commands.  The CPPFLAGS-*.c variables
are renamed to CFLAGS-*.c, matching those for the non-inline libm
function tests.

By moving the -U option to the header file, this should ensure that
ordering issues don't arise with a subsequent move of the options to
these tests to target-specific CFLAGS += ... variable settings (for
when tests for each function are build separately and so compilation
options need setting for many more makefile targets, for which
target-specific variable settings seem to be the most convenient form
to generate with iterators).

Tested for x86_64.  Committed.

2017-02-09  Joseph Myers  <joseph@codesourcery.com>

	* math/test-math-inline.h (__LIBC_INTERNAL_MATH_INLINES): Undefine
	macro.
	* math/Makefile (CPPFLAGS-test-ifloat.c): Rename to ...
	(CFLAGS-test-ifloat.c): ... this.  Remove
	-U__LIBC_INTERNAL_MATH_INLINES.
	* math/Makefile (CPPFLAGS-test-idouble.c): Rename to ...
	(CFLAGS-test-idouble.c): ... this.  Remove
	-U__LIBC_INTERNAL_MATH_INLINES.
	* math/Makefile (CPPFLAGS-test-ildouble.c): Rename to ...
	(CFLAGS-test-ildouble.c): ... this.  Remove
	-U__LIBC_INTERNAL_MATH_INLINES.

diff --git a/math/Makefile b/math/Makefile
index e5e4412..5d93b4f 100644
--- a/math/Makefile
+++ b/math/Makefile
@@ -309,12 +309,9 @@ CFLAGS-test-tgmath-ret.c = -fno-builtin
 CFLAGS-test-powl.c = -fno-builtin
 
 CFLAGS-test-snan.c = -fsignaling-nans
-CPPFLAGS-test-ifloat.c = -U__LIBC_INTERNAL_MATH_INLINES \
-			 $(libm-test-fast-math-cflags)
-CPPFLAGS-test-idouble.c = -U__LIBC_INTERNAL_MATH_INLINES \
-			  $(libm-test-fast-math-cflags)
-CPPFLAGS-test-ildouble.c = -U__LIBC_INTERNAL_MATH_INLINES \
-			  $(libm-test-fast-math-cflags)
+CFLAGS-test-ifloat.c = $(libm-test-fast-math-cflags)
+CFLAGS-test-idouble.c = $(libm-test-fast-math-cflags)
+CFLAGS-test-ildouble.c = $(libm-test-fast-math-cflags)
 
 CFLAGS-test-signgam-finite.c = -ffinite-math-only
 CFLAGS-test-signgam-finite-c99.c = -ffinite-math-only -std=c99
diff --git a/math/test-math-inline.h b/math/test-math-inline.h
index faf91c5..2a29f3c 100644
--- a/math/test-math-inline.h
+++ b/math/test-math-inline.h
@@ -21,6 +21,7 @@
 #define TEST_ERRNO 0
 #define TEST_EXCEPTIONS 0
 
+#undef __LIBC_INTERNAL_MATH_INLINES
 #ifdef __NO_MATH_INLINES
 # undef __NO_MATH_INLINES
 #endif

-- 
Joseph S. Myers
joseph@codesourcery.com