Make CANNOT_DUMP work better on GNU/Linux

Clean up some of the bitrot affecting the CANNOT_DUMP code.  This
lets the build succeed again, and fixes the testing framework so
that most test cases now pass.  About twenty test cases still
fail, though, and we still have Bug#24974.
* configure.ac (CANNOT_DUMP): Now empty if CANNOT_DUMP.
(SYSTEM_MALLOC): Now true if CANNOT_DUMP.  There should no longer
be any point to messing with a private memory allocator unless
Emacs is dumping.
* src/alloc.c (alloc_unexec_pre, alloc_unexec_post, check_pure_size):
* src/image.c (reset_image_types):
* src/lastfile.c (my_endbss, _my_endbss, my_endbss_static):
Do not define if CANNOT_DUMP.
* src/emacs.c (might_dump) [CANNOT_DUMP]: Now always false and local.
(daemon_pipe) [!WINDOWSNT]: Now static.
* test/Makefile.in (mostlyclean): Remove *.tmp files.
(make-test-deps.mk): Elide CANNOT_DUMP chatter.

1 files changed, 7 insertions, 3 deletions

diff --git a/src/emacs.c b/src/emacs.c
index efd4fa329df..ac9b6495337 100644
--- a/src/emacs.c
+++ b/src/emacs.c
@@ -130,11 +130,15 @@ Lisp_Object Vlibrary_cache;
    on subsequent starts.  */
 bool initialized;
 
+#ifdef CANNOT_DUMP
+enum { might_dump = false };
+#else
 /* Set to true if this instance of Emacs might dump.  */
-#ifndef DOUG_LEA_MALLOC
+# ifndef DOUG_LEA_MALLOC
 static
-#endif
+# endif
 bool might_dump;
+#endif
 
 #ifdef DARWIN_OS
 extern void unexec_init_emacs_zone (void);
@@ -196,7 +200,7 @@ int daemon_type;
 #ifndef WINDOWSNT
 /* Pipe used to send exit notification to the background daemon parent at
    startup.  On Windows, we use a kernel event instead.  */
-int daemon_pipe[2];
+static int daemon_pipe[2];
 #else
 HANDLE w32_daemon_event;
 #endif