Disable libbacktrace by default

It's currently only tested on linux, and doesn't work yet on macOS (tested on 10.15). Further work is necessary

Signed-off-by: Haru <haru@dotalux.com>

1 files changed, 180 insertions, 130 deletions

diff --git a/configure b/configure
index 5816580ad..a1d233c57 100755
--- a/configure
+++ b/configure
@@ -1,5 +1,5 @@
 #! /bin/sh
-# From configure.ac 9bce92f63.
+# From configure.ac aa7aba7b6.
 # Guess values for system-dependent variables and create Makefiles.
 # Generated by GNU Autoconf 2.69.
 #
@@ -1366,7 +1366,8 @@ Optional Features:
   --enable-debug[=ARG]    Compiles extra debug code. (yes by default)
                           (available options: yes, no, gdb)
   --enable-libbacktrace[=ARG]
-                          Compiles with libbacktrace. (yes by default)
+                          Compiles with libbacktrace. (no by default -
+                          experimental)
   --enable-buildbot[=ARG] (available options: yes, no)
   --enable-rdtsc          Uses rdtsc as timing source (disabled by default)
                           Enable it when you've timing issues. (For example:
@@ -3810,7 +3811,7 @@ if test "${enable_libbacktrace+set}" = set; then :
 		esac
 
 else
-  enable_libbacktrace="yes"
+  enable_libbacktrace="no"
 
 fi
 
@@ -8596,15 +8597,13 @@ esac
 #
 # libbacktrace
 #
-case $enable_libbacktrace in
-	"no")
-		# default value
-		USE_LIBBACKTRACE="no"
-		;;
-	"yes")
-		CFLAGS="$CFLAGS "
-		CPPFLAGS="$CPPFLAGS -DHAVE_LIBBACKTRACE"
-		USE_LIBBACKTRACE="yes"
+if test "$enable_libbacktrace" = "no" ; then
+	USE_LIBBACKTRACE="no"
+else
+	CPPFLAGS="$CPPFLAGS -DHAVE_LIBBACKTRACE"
+	USE_LIBBACKTRACE="yes"
+
+	# libbacktrace checks
 
 		{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC supports -funwind-tables" >&5
 $as_echo_n "checking whether $CC supports -funwind-tables... " >&6; }
@@ -8632,12 +8631,8 @@ fi
 rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
 
 
-		;;
-esac
 
-# libbacktrace checks
-
-for ac_prog in gawk mawk nawk awk
+	for ac_prog in gawk mawk nawk awk
 do
   # Extract the first word of "$ac_prog", so it can be a program name with args.
 set dummy $ac_prog; ac_word=$2
@@ -8679,24 +8674,31 @@ fi
   test -n "$AWK" && break
 done
 
-case "$AWK" in
-"") as_fn_error $? "can't build without awk" "$LINENO" 5 ;;
-esac
+	case "$AWK" in
+		"")
+			as_fn_error $? "Libbacktrace requires awk to build" "$LINENO" 5
+			;;
+	esac
 
-backtrace_supported=yes
-ac_fn_c_check_header_mongrel "$LINENO" "unwind.h" "ac_cv_header_unwind_h" "$ac_includes_default"
+	backtrace_supported=yes
+	ac_fn_c_check_header_mongrel "$LINENO" "unwind.h" "ac_cv_header_unwind_h" "$ac_includes_default"
 if test "x$ac_cv_header_unwind_h" = xyes; then :
   ac_fn_c_check_func "$LINENO" "_Unwind_Backtrace" "ac_cv_func__Unwind_Backtrace"
 if test "x$ac_cv_func__Unwind_Backtrace" = xyes; then :
   BACKTRACE_FILE="backtrace.lo simple.lo"
 else
-  BACKTRACE_FILE="nounwind.lo"
-	                backtrace_supported=no
+
+					BACKTRACE_FILE="nounwind.lo"
+					backtrace_supported=no
+
+
 fi
 
 else
-  BACKTRACE_FILE="nounwind.lo"
-	 backtrace_supported=no
+
+			BACKTRACE_FILE="nounwind.lo"
+		 	backtrace_supported=no
+
 
 fi
 
@@ -8707,98 +8709,121 @@ fi
 $as_echo "#define HAVE_GETIPINFO 1" >>confdefs.h
 
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking __sync extensions" >&5
+	{ $as_echo "$as_me:${as_lineno-$LINENO}: checking __sync extensions" >&5
 $as_echo_n "checking __sync extensions... " >&6; }
 if ${libbacktrace_cv_sys_sync+:} false; then :
   $as_echo_n "(cached) " >&6
 else
-  if test -n "${with_target_subdir}"; then
-   case "${host}" in
-   hppa*-*-hpux*) libbacktrace_cv_sys_sync=no ;;
-   *) libbacktrace_cv_sys_sync=yes ;;
-   esac
- else
-   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+
+			if test -n "${with_target_subdir}"; then
+				case "${host}" in
+					hppa*-*-hpux*)
+						libbacktrace_cv_sys_sync=no
+						;;
+					*)
+						libbacktrace_cv_sys_sync=yes
+						;;
+				esac
+			else
+				cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
-int i;
+
+						int i;
 int
 main ()
 {
-__sync_bool_compare_and_swap (&i, i, i);
-                       __sync_lock_test_and_set (&i, 1);
-                       __sync_lock_release (&i);
+
+								__sync_bool_compare_and_swap(&i, i, i);
+								__sync_lock_test_and_set(&i, 1);
+								__sync_lock_release(&i);
+
+
   ;
   return 0;
 }
+
 _ACEOF
 if ac_fn_c_try_link "$LINENO"; then :
   libbacktrace_cv_sys_sync=yes
 else
   libbacktrace_cv_sys_sync=no
+
 fi
 rm -f core conftest.err conftest.$ac_objext \
     conftest$ac_exeext conftest.$ac_ext
- fi
+			fi
+
+
 fi
 { $as_echo "$as_me:${as_lineno-$LINENO}: result: $libbacktrace_cv_sys_sync" >&5
 $as_echo "$libbacktrace_cv_sys_sync" >&6; }
-BACKTRACE_SUPPORTS_THREADS=0
-if test "$libbacktrace_cv_sys_sync" = "yes"; then
-  BACKTRACE_SUPPORTS_THREADS=1
+	BACKTRACE_SUPPORTS_THREADS=0
+	if test "$libbacktrace_cv_sys_sync" = "yes"; then
+		BACKTRACE_SUPPORTS_THREADS=1
 
 $as_echo "#define HAVE_SYNC_FUNCTIONS 1" >>confdefs.h
 
-fi
+	fi
 
 
-# Test for __atomic support.
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking __atomic extensions" >&5
+	# Test for __atomic support.
+	{ $as_echo "$as_me:${as_lineno-$LINENO}: checking __atomic extensions" >&5
 $as_echo_n "checking __atomic extensions... " >&6; }
 if ${libbacktrace_cv_sys_atomic+:} false; then :
   $as_echo_n "(cached) " >&6
 else
-  if test -n "${with_target_subdir}"; then
-   libbacktrace_cv_sys_atomic=yes
- else
-   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+
+			if test -n "${with_target_subdir}"; then
+				libbacktrace_cv_sys_atomic=yes
+			else
+				cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
-int i;
+
+						int i;
 int
 main ()
 {
-__atomic_load_n (&i, __ATOMIC_ACQUIRE);
-		       __atomic_store_n (&i, 1, __ATOMIC_RELEASE);
+
+								__atomic_load_n(&i, __ATOMIC_ACQUIRE);
+								__atomic_store_n(&i, 1, __ATOMIC_RELEASE);
+
+
   ;
   return 0;
 }
+
 _ACEOF
 if ac_fn_c_try_link "$LINENO"; then :
   libbacktrace_cv_sys_atomic=yes
 else
   libbacktrace_cv_sys_atomic=no
+
 fi
 rm -f core conftest.err conftest.$ac_objext \
     conftest$ac_exeext conftest.$ac_ext
- fi
+			fi
+
+
 fi
 { $as_echo "$as_me:${as_lineno-$LINENO}: result: $libbacktrace_cv_sys_atomic" >&5
 $as_echo "$libbacktrace_cv_sys_atomic" >&6; }
-if test "$libbacktrace_cv_sys_atomic" = "yes"; then
+	if test "$libbacktrace_cv_sys_atomic" = "yes"; then
 
 $as_echo "#define HAVE_ATOMIC_FUNCTIONS 1" >>confdefs.h
 
-fi
+	fi
 
-# The library needs to be able to read the executable itself.  Compile
-# a file to determine the executable format.  The awk script
-# filetype.awk prints out the file type.
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking output filetype" >&5
+	# The library needs to be able to read the executable itself.  Compile
+	# a file to determine the executable format.  The awk script
+	# filetype.awk prints out the file type.
+	{ $as_echo "$as_me:${as_lineno-$LINENO}: checking output filetype" >&5
 $as_echo_n "checking output filetype... " >&6; }
 if ${libbacktrace_cv_sys_filetype+:} false; then :
   $as_echo_n "(cached) " >&6
 else
-  filetype=
-cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+
+			filetype=
+			cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 int i;
 int
@@ -8816,74 +8841,93 @@ else
 $as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
 as_fn_error $? "compiler failed
 See \`config.log' for more details" "$LINENO" 5; }
+
 fi
 rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-libbacktrace_cv_sys_filetype=$filetype
+			libbacktrace_cv_sys_filetype=$filetype
+
+
 fi
 { $as_echo "$as_me:${as_lineno-$LINENO}: result: $libbacktrace_cv_sys_filetype" >&5
 $as_echo "$libbacktrace_cv_sys_filetype" >&6; }
 
-# Match the file type to decide what files to compile.
-LIBBACKTRACE_FORMAT_FILE=
-backtrace_supports_data=yes
-case "$libbacktrace_cv_sys_filetype" in
-elf*) LIBBACKTRACE_FORMAT_FILE="elf.o" ;;
-pecoff) LIBBACKTRACE_FORMAT_FILE="pecoff.o"
-        backtrace_supports_data=no
-	;;
-xcoff*) LIBBACKTRACE_FORMAT_FILE="xcoff.o"
-        backtrace_supports_data=no
-        ;;
-macho*) LIBBACKTRACE_FORMAT_FILE="macho.o"
-        backtrace_supports_data=no
-        ;;
-*) { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: could not determine output file type" >&5
+	# Match the file type to decide what files to compile.
+	LIBBACKTRACE_FORMAT_FILE=
+	backtrace_supports_data=yes
+	case "$libbacktrace_cv_sys_filetype" in
+		elf*)
+			LIBBACKTRACE_FORMAT_FILE="elf.o"
+			;;
+		pecoff)
+			LIBBACKTRACE_FORMAT_FILE="pecoff.o"
+			backtrace_supports_data=no
+			;;
+		xcoff*)
+			LIBBACKTRACE_FORMAT_FILE="xcoff.o"
+			backtrace_supports_data=no
+			;;
+		macho*)
+			LIBBACKTRACE_FORMAT_FILE="macho.o"
+			backtrace_supports_data=no
+			;;
+		*)
+			{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: could not determine output file type" >&5
 $as_echo "$as_me: WARNING: could not determine output file type" >&2;}
-   LIBBACKTRACE_FORMAT_FILE="unknown.o"
-   backtrace_supported=no
-   ;;
-esac
+			LIBBACKTRACE_FORMAT_FILE="unknown.o"
+			backtrace_supported=no
+			;;
+	esac
 
 
-# ELF defines.
-elfsize=
-case "$libbacktrace_cv_sys_filetype" in
-elf32) elfsize=32 ;;
-elf64) elfsize=64 ;;
-*)     elfsize=unused
-esac
+	# ELF defines.
+	elfsize=
+	case "$libbacktrace_cv_sys_filetype" in
+		elf32)
+			elfsize=32
+			;;
+		elf64)
+			elfsize=64
+			;;
+		*)
+			elfsize=unused
+	esac
 
 cat >>confdefs.h <<_ACEOF
 #define BACKTRACE_ELF_SIZE $elfsize
 _ACEOF
 
 
-# XCOFF defines.
-xcoffsize=
-case "$libbacktrace_cv_sys_filetype" in
-xcoff32) xcoffsize=32 ;;
-xcoff64) xcoffsize=64 ;;
-*)       xcoffsize=unused
-esac
+	# XCOFF defines.
+	xcoffsize=
+	case "$libbacktrace_cv_sys_filetype" in
+		xcoff32)
+			xcoffsize=32
+			;;
+		xcoff64)
+			xcoffsize=64
+			;;
+		*)
+			xcoffsize=unused
+	esac
 
 cat >>confdefs.h <<_ACEOF
 #define BACKTRACE_XCOFF_SIZE $xcoffsize
 _ACEOF
 
 
-BACKTRACE_SUPPORTED=0
-if test "$backtrace_supported" = "yes"; then
-  BACKTRACE_SUPPORTED=1
-fi
+	BACKTRACE_SUPPORTED=0
+	if test "$backtrace_supported" = "yes"; then
+		BACKTRACE_SUPPORTED=1
+	fi
 
 
-BACKTRACE_SUPPORTS_DATA=0
-if test "$backtrace_supports_data" = "yes"; then
-  BACKTRACE_SUPPORTS_DATA=1
-fi
+	BACKTRACE_SUPPORTS_DATA=0
+	if test "$backtrace_supports_data" = "yes"; then
+		BACKTRACE_SUPPORTS_DATA=1
+	fi
 
 
-ac_fn_c_check_func "$LINENO" "mmap" "ac_cv_func_mmap"
+	ac_fn_c_check_func "$LINENO" "mmap" "ac_cv_func_mmap"
 if test "x$ac_cv_func_mmap" = xyes; then :
   have_mmap=yes
 else
@@ -8891,54 +8935,60 @@ else
 fi
 
 
-VIEW_FILE=mmapio.lo
-ALLOC_FILE=mmap.lo
+	VIEW_FILE=mmapio.lo
+	ALLOC_FILE=mmap.lo
 
 
 
 
-BACKTRACE_USES_MALLOC=0
-if test "$ALLOC_FILE" = "alloc.lo"; then
-  BACKTRACE_USES_MALLOC=1
-fi
+	BACKTRACE_USES_MALLOC=0
+	if test "$ALLOC_FILE" = "alloc.lo"; then
+		BACKTRACE_USES_MALLOC=1
+	fi
 
 
-ac_fn_c_check_func "$LINENO" "dl_iterate_phdr" "ac_cv_func_dl_iterate_phdr"
+	ac_fn_c_check_func "$LINENO" "dl_iterate_phdr" "ac_cv_func_dl_iterate_phdr"
 if test "x$ac_cv_func_dl_iterate_phdr" = xyes; then :
   have_dl_iterate_phdr=yes
 else
   have_dl_iterate_phdr=no
 fi
 
-if test "$have_dl_iterate_phdr" = "yes"; then
+	if test "$have_dl_iterate_phdr" = "yes"; then
 
 $as_echo "#define HAVE_DL_ITERATE_PHDR 1" >>confdefs.h
 
-fi
+	fi
 
-# Check for the fcntl function.
-if test -n "${with_target_subdir}"; then
-   case "${host}" in
-   *-*-mingw*) have_fcntl=no ;;
-   spu-*-*) have_fcntl=no ;;
-   *) have_fcntl=yes ;;
-   esac
-else
-  ac_fn_c_check_func "$LINENO" "fcntl" "ac_cv_func_fcntl"
+	# Check for the fcntl function.
+	if test -n "${with_target_subdir}"; then
+		case "${host}" in
+			*-*-mingw*)
+				have_fcntl=no
+				;;
+			spu-*-*)
+				have_fcntl=no
+				;;
+			*)
+				have_fcntl=yes
+				;;
+		esac
+	else
+		ac_fn_c_check_func "$LINENO" "fcntl" "ac_cv_func_fcntl"
 if test "x$ac_cv_func_fcntl" = xyes; then :
   have_fcntl=yes
 else
   have_fcntl=no
 fi
 
-fi
-if test "$have_fcntl" = "yes"; then
+	fi
+	if test "$have_fcntl" = "yes"; then
 
 $as_echo "#define HAVE_FCNTL 1" >>confdefs.h
 
-fi
+	fi
 
-ac_fn_c_check_decl "$LINENO" "strnlen" "ac_cv_have_decl_strnlen" "$ac_includes_default"
+	ac_fn_c_check_decl "$LINENO" "strnlen" "ac_cv_have_decl_strnlen" "$ac_includes_default"
 if test "x$ac_cv_have_decl_strnlen" = xyes; then :
   ac_have_decl=1
 else
@@ -8949,7 +8999,7 @@ cat >>confdefs.h <<_ACEOF
 #define HAVE_DECL_STRNLEN $ac_have_decl
 _ACEOF
 
-for ac_func in lstat readlink
+	for ac_func in lstat readlink
 do :
   as_ac_var=`$as_echo "ac_cv_func_$ac_func" | $as_tr_sh`
 ac_fn_c_check_func "$LINENO" "$ac_func" "$as_ac_var"
@@ -8962,21 +9012,21 @@ fi
 done
 
 
-ac_fn_c_check_func "$LINENO" "getexecname" "ac_cv_func_getexecname"
+	ac_fn_c_check_func "$LINENO" "getexecname" "ac_cv_func_getexecname"
 if test "x$ac_cv_func_getexecname" = xyes; then :
   have_getexecname=yes
 else
   have_getexecname=no
 fi
 
-if test "$have_getexecname" = "yes"; then
+	if test "$have_getexecname" = "yes"; then
 
 $as_echo "#define HAVE_GETEXECNAME 1" >>confdefs.h
 
+	fi
 fi
 
 
-
 #
 # Buildbot
 #