While looking into PR build/8751 (which seems to be fixed), I noticed
that it's not possible to change CPPFLAGS for gdb on the "make"
command line. It's reasonable to want to do this sometimes, and I
think this patch should suffice.
gdb/ChangeLog
2018-08-07 Tom Tromey <tom@tromey.com>
* Makefile.in (CPPFLAGS): New variable.
(INTERNAL_CPPFLAGS): Use it.
---
gdb/ChangeLog | 5 +++++
gdb/Makefile.in | 3 ++-
2 files changed, 7 insertions(+), 1 deletion(-)
diff --git a/gdb/Makefile.in b/gdb/Makefile.in
index 8c744d70c0..7ff817d790 100644
--- a/gdb/Makefile.in
+++ b/gdb/Makefile.in
@@ -557,6 +557,7 @@ PROFILE_CFLAGS = @PROFILE_CFLAGS@
# when running make. I.E.: "make CFLAGS=-Wmissing-prototypes".
CFLAGS = @CFLAGS@
CXXFLAGS = @CXXFLAGS@
+CPPFLAGS = @CPPFLAGS@
# Set by configure, for e.g. expat. Python installations are such
that
# C headers are included using their basename (for example, we
#include
@@ -564,7 +565,7 @@ CXXFLAGS = @CXXFLAGS@
# are sometimes a little generic, we think that the risk of collision
# with other header files is high. If that happens, we try to
mitigate
# a bit the consequences by putting the Python includes last in the
list.
-INTERNAL_CPPFLAGS = @CPPFLAGS@ @GUILE_CPPFLAGS@ @PYTHON_CPPFLAGS@
+INTERNAL_CPPFLAGS = $(CPPFLAGS) @GUILE_CPPFLAGS@ @PYTHON_CPPFLAGS@
# INTERNAL_CFLAGS is the aggregate of all other *CFLAGS macros.
INTERNAL_CFLAGS_BASE = \