Add docuentation.

git-svn-id: https://svn.dealii.org/trunk@24156 0785d39b-7218-0410-832d-ea1e28bc413d

diff --git a/deal.II/aclocal.m4 b/deal.II/aclocal.m4
index 83423fbb8866ca39ebe7a1a9d9e4136083700e3f..b9855f0fe26d009f2d816fec34a8964fa624fdaa 100644 (file)
--- a/deal.II/aclocal.m4
+++ b/deal.II/aclocal.m4
@@ -634,7 +634,11 @@ AC_DEFUN(DEAL_II_SET_CXX_FLAGS, dnl
       clang*)
           dnl Like many other compilers, clang produces warnings for array
          dnl accesses out of bounds, even if they are in code that's dead
-         dnl for this dimension. suppress this
+         dnl for this dimension. Suppress this.
+         dnl
+         dnl There are a number of other warnings we get that can't easily
+         dnl be worked around and that are definitely not useful. Suppress
+         dnl those too.
           CXXFLAGSG="$CXXFLAGS -DDEBUG -g -Wall -Wno-array-bounds -Wno-parentheses -Wno-delete-non-virtual-dtor -Wno-unneeded-internal-declaration -Wno-unused-function -Wno-unused-variable"
           CXXFLAGSO="$CXXFLAGS -O2"
          CXXFLAGSPIC="-fPIC"