* Makefile.in (REQUIRED_SUBDIRS): New var.

	(subdir_do): Verify required subdir Makefiles exist.

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index e1d6cb0..d380020 100644 (file)
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -4,6 +4,9 @@
 
 2010-10-06  Doug Evans  <dje@google.com>
 
+       * Makefile.in (REQUIRED_SUBDIRS): New var.
+       (subdir_do): Verify required subdir Makefiles exist.
+
        Create subdir data-directory.
        * Makefile.in (XML_SYSCALL_DIR, XML_SYSCALL_FILES): Moved to
        data-directory/Makefile.in.

diff --git a/gdb/Makefile.in b/gdb/Makefile.in
index bfb4b59..b856c3a 100644 (file)
--- a/gdb/Makefile.in
+++ b/gdb/Makefile.in
@@ -875,6 +875,12 @@ TSOBS = inflow.o
 SUBDIRS = @subdirs@ data-directory
 CLEANDIRS = $(SUBDIRS) gnulib
 
+# List of subdirectories in the build tree that must exist.
+# This is used to force build failures in existing trees when
+# a new directory is added.
+# The format here is for the `case' shell command.
+REQUIRED_SUBDIRS = doc | testsuite | gnulib | data-directory
+
 # For now, shortcut the "configure GDB for fewer languages" stuff.
 YYFILES = c-exp.c \
        cp-name-parser.c \
@@ -1239,6 +1245,13 @@ diststuff: $(DISTSTUFF) $(PACKAGE).pot $(CATALOGS)
 
 subdir_do: force
        @for i in $(DODIRS); do \
+               case $$i in \
+               $(REQUIRED_SUBDIRS)) \
+                       if [ ! -f ./$$i/Makefile ] ; then \
+                               echo "Missing $$i/Makefile" >&2 ; \
+                               exit 1 ; \
+                       fi ;; \
+               esac ; \
                if [ -f ./$$i/Makefile ] ; then \
                        if (cd ./$$i; \
                                $(MAKE) $(FLAGS_TO_PASS) $(DO)) ; then true ; \