--- wikisrc/pkgsrc/gcc.mdwn	2017/12/31 17:15:37	1.9
+++ wikisrc/pkgsrc/gcc.mdwn	2018/01/01 23:27:13	1.11
@@ -231,10 +231,17 @@ A gcc version that is too old will not b
 Anything older than 4.8 fails for c++11.  4.8 fails on some c++11
 packages, such as firefox and glibmm.
 
-A version that is too new also fails to build packages.  Analyses
-posted to tech-pkg indicate that 5 is close to 4.9 in the number of
-packages built, and that moving to 6 causes hundreds of additional
-failures.
+A version that is too new also fails to build packages.  Jason Bacon
+posted counts to tech-pkg indicate that 5 is close to 4.8 in the
+number of packages built, and that moving to 6 causes hundreds of
+additional failures.  (Keep in mind that currently, building with 4.8
+will build 4.9 for firefox, but in the future will not.)
+
+    www/pkgsrc/packages/sharedapps/pkg-2017Q3/RHEL6-gcc48/All	16461
+    www/pkgsrc/packages/sharedapps/pkg-2017Q3/RHEL6-gcc6/All	15849
+
+    www/pkgsrc/packages/sharedapps/pkg-2017Q3/RHEL7-gcc48/All	16414
+    www/pkgsrc/packages/sharedapps/pkg-2017Q3/RHEL7-gcc5/All	16338
 
 Therefore, the current answer to "What is the best version to use" is
 5.
@@ -248,12 +255,10 @@ built it earlier.
 When the base system is old (e.g., gcc 4.5 in NetBSD 6, or 4.1, in
 NetBSD 5), then it is clear that a newer version must be built.  For
 these, PKGSRC_GXX_VERSION should default to a newish gcc, avoiding
-being so new as to cause building issues.  Currently, gcc5 is probably
-a good choice, with gcc6 compiling significantly but not vastly fewer
-packages.  PKGSRC_GCC_VERSION should probably default to the system
-version if it can build all C99 programs, or match PKGSRC_GXX_VERSION,
-if the system version is too old.  Perhaps gcc 4.5 would be used, but
-4.1 not used.  \todo Discuss.
+being so new as to cause building issues.  PKGSRC_GCC_VERSION should
+probably default to the system version if it can build all C99
+programs, or match PKGSRC_GXX_VERSION, if the system version is too
+old.  Perhaps gcc 4.5 would be used, but 4.1 not used.  \todo Discuss.
 
 When the base system is almost new enough, the decision about the
 default is more complicated.  A key example is gcc 4.8, found in
@@ -262,7 +267,7 @@ need a newer version.  One options is to
 firefox failing, as well as all c++14 programs.  Another is to choose
 4.9, but this makes little sense because c++14 programs will still
 fail, and the general rule of moving to the most recent
-generally-acceptable version applies, which currently leads to gcc6.
+generally-acceptable version applies, which currently leads to gcc5.
 This is in effect a declaration that "almost new enough" does not
 count as new enough.  Thus the plan for NetBSD 7 is to set
 PKGSRC_GCC_VERSION to 4.8 and PKGSRC_GXX_VERSION to 5.