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authorJeffrey A Law <law@cygnus.com>1998-06-27 22:42:09 +0000
committerJeff Law <law@gcc.gnu.org>1998-06-27 16:42:09 -0600
commitf89223a97823afeaede0aa446759a1c82ebfd396 (patch)
treec302fca7ce4de21606b47b1e6cd5ad3661065c81
parent17294adfebc7f5a45d5f6b575c4e1a81b5c3579f (diff)
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* tm.texi (NEED_MATH_LIBRARY): Document new target macro.
From-SVN: r20766
-rw-r--r--gcc/ChangeLog2
-rw-r--r--gcc/tm.texi9
2 files changed, 11 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 8fe3ba2..5244d2c 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,5 +1,7 @@
Sat Jun 27 22:37:05 1998 Jeffrey A Law (law@cygnus.com)
+ * tm.texi (NEED_MATH_LIBRARY): Document new target macro.
+
* Makefile.in (gencheck): Remove $(TREE_H) dependency.
Sat Jun 27 20:20:00 1998 John Carr <jfc@mit.edu>
diff --git a/gcc/tm.texi b/gcc/tm.texi
index 6f0d2dd..81a9a73 100644
--- a/gcc/tm.texi
+++ b/gcc/tm.texi
@@ -7457,4 +7457,13 @@ operations other than load, store and copy operations.
You need only define this macro if the target holds values larger than
@code{word_mode} in general purpose registers. Most targets should not define
this macro.
+
+@findex NEED_MATH_LIBRARY
+@item NEED_MATH_LIBRARY
+Define this macro as a C expression that is nonzero if @code{g++} should
+automatically link in the math library or to zero if @code{g++} should not
+automatically link in the math library.
+
+You need only define this macro if the target does not always need the math
+library linked into C++ programs.
@end table