Doc.

git-svn-id: https://svn.dealii.org/trunk@4988 0785d39b-7218-0410-832d-ea1e28bc413d

diff --git a/deal.II/aclocal.m4 b/deal.II/aclocal.m4
index e71923939a4f33d87eac1c1a469515b98a876da4..83ef76056f2e8584408422981a3b10db2034101f 100644 (file)
--- a/deal.II/aclocal.m4
+++ b/deal.II/aclocal.m4
@@ -485,6 +485,10 @@ dnl that this comparison is always true. This is, at the best, annoying
 dnl since it crops up at several places where std::advance is called from
 dnl inside the library. Check whether the present version of the compiler
 dnl has this problem
+dnl
+dnl This test is only called if gcc is used.
+dnl
+dnl Usage: DEAL_II_CHECK_ADVANCE_WARNING
 AC_DEFUN(DEAL_II_CHECK_ADVANCE_WARNING, dnl
   AC_LANG_CPLUSPLUS
   CXXFLAGS="$CXXFLAGSG -Werror"