From a9b9870206658564272fe17d2079ed9eb6ffb15f Mon Sep 17 00:00:00 2001
From: Nick Alcock <nick.alcock@oracle.com>
Date: Fri, 5 Jun 2020 18:38:03 +0100
Subject: libctf, dedup: add new configure option
 --enable-libctf-hash-debugging

Add a new debugging configure option, --enable-libctf-hash-debugging,
off by default, which lets you configure in expensive internal
consistency checks and enable the printing of debugging output when
LIBCTF_DEBUG=t before type deduplication has happened.

In this commit we just add the option and cause it to turn ctf_assert
into a real, hard assert for easier debugging.

libctf/
	* configure.ac: Add --enable-libctf-hash-debugging.
	* aclocal.m4: Pull in enable.m4, for GCC_ENABLE.
	* Makefile.in: Regenerated.
	* configure: Likewise.
	* config.h.in: Likewise.
	* ctf-impl.h [ENABLE_LIBCTF_HASH_DEBUGGING]
	(ctf_assert): Define to assert.
---
 libctf/configure | 41 +++++++++++++++++++++++++++++++++++++++--
 1 file changed, 39 insertions(+), 2 deletions(-)

(limited to 'libctf/configure')

diff --git a/libctf/configure b/libctf/configure
index 58aaa3a..9f16ae9 100755
--- a/libctf/configure
+++ b/libctf/configure
@@ -642,6 +642,8 @@ SHARED_LIBADD
 SHARED_LDFLAGS
 NEED_CTF_QSORT_R_FALSE
 NEED_CTF_QSORT_R_TRUE
+ENABLE_LIBCTF_HASH_DEBUGGING_FALSE
+ENABLE_LIBCTF_HASH_DEBUGGING_TRUE
 zlibinc
 zlibdir
 ac_libctf_warn_cflags
@@ -796,6 +798,7 @@ enable_werror_always
 enable_maintainer_mode
 enable_install_libbfd
 with_system_zlib
+enable_libctf_hash_debugging
 '
       ac_precious_vars='build_alias
 host_alias
@@ -1441,6 +1444,9 @@ Optional Features:
                           enable make rules and dependencies not useful (and
                           sometimes confusing) to the casual installer
   --enable-install-libbfd controls installation of libbfd and related headers
+  --enable-libctf-hash-debugging
+                          Enable expensive debugging of CTF deduplication type
+                          hashing [default=no]
 
 Optional Packages:
   --with-PACKAGE[=ARG]    use PACKAGE [ARG=yes]
@@ -11513,7 +11519,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<_LT_EOF
-#line 11516 "configure"
+#line 11522 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -11619,7 +11625,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<_LT_EOF
-#line 11622 "configure"
+#line 11628 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -12799,6 +12805,33 @@ fi
 
 
 
+ # Check whether --enable-libctf-hash-debugging was given.
+if test "${enable_libctf_hash_debugging+set}" = set; then :
+  enableval=$enable_libctf_hash_debugging;
+      case "$enableval" in
+       yes|no) ;;
+       *) as_fn_error $? "Argument to enable/disable libctf-hash-debugging must be yes or no" "$LINENO" 5 ;;
+      esac
+
+else
+  enable_libctf_hash_debugging=no
+fi
+
+
+if test "${enable_libctf_hash_debugging}" = yes; then
+
+$as_echo "#define ENABLE_LIBCTF_HASH_DEBUGGING 1" >>confdefs.h
+
+fi
+ if test "${enable_libctf_hash_debugging}" = yes; then
+  ENABLE_LIBCTF_HASH_DEBUGGING_TRUE=
+  ENABLE_LIBCTF_HASH_DEBUGGING_FALSE='#'
+else
+  ENABLE_LIBCTF_HASH_DEBUGGING_TRUE='#'
+  ENABLE_LIBCTF_HASH_DEBUGGING_FALSE=
+fi
+
+
 # Similar to GDB_AC_CHECK_BFD.
 OLD_CFLAGS=$CFLAGS
 OLD_LDFLAGS=$LDFLAGS
@@ -13495,6 +13528,10 @@ if test -z "${INSTALL_LIBBFD_TRUE}" && test -z "${INSTALL_LIBBFD_FALSE}"; then
   as_fn_error $? "conditional \"INSTALL_LIBBFD\" was never defined.
 Usually this means the macro was only invoked conditionally." "$LINENO" 5
 fi
+if test -z "${ENABLE_LIBCTF_HASH_DEBUGGING_TRUE}" && test -z "${ENABLE_LIBCTF_HASH_DEBUGGING_FALSE}"; then
+  as_fn_error $? "conditional \"ENABLE_LIBCTF_HASH_DEBUGGING\" was never defined.
+Usually this means the macro was only invoked conditionally." "$LINENO" 5
+fi
 
 if test -z "${NEED_CTF_QSORT_R_TRUE}" && test -z "${NEED_CTF_QSORT_R_FALSE}"; then
   as_fn_error $? "conditional \"NEED_CTF_QSORT_R\" was never defined.
-- 
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