Fix to generate ./configure file

README-DEVS.md

@@ -0,0 +1,23 @@
+# Instructions for TA-Lib maintainers
+**You do not need to do any of this if you are only a TA-Lib user.**
+
+# How to generate "./configure" script
+Dependencies to install:
+- automake
+- libtool
+- autogen
+
+On ubuntu, just do the following:
+```sudo apt install automake libtool autogen```
+
+... then execute:
+```
+$ mkdir -p m4
+$ autoreconf -i
+```
+
+# How to generate the .tar.gz
+```
+$ ./configure
+$ make dist
+```

configure.ac

@@ -1,21 +1,24 @@
 #                                               -*- Autoconf -*-
 # Process this file with autoconf to produce a configure script.
 
-AC_PREREQ(2.59)
-AC_COPYRIGHT([(c) TicTacTec 2005, 2006])
-AC_INIT([ta-lib], [git], [https://github.com/TA-Lib/ta-lib])
+AC_PREREQ([2.71])
+AC_COPYRIGHT([(c) Mario Fortier 1999-2024])
+AC_INIT([ta-lib],[git],[https://github.com/TA-Lib/ta-lib])
 AC_CONFIG_MACRO_DIRS([m4])
 AC_CONFIG_SRCDIR([src/ta_func/ta_AD.c])
-AC_CONFIG_HEADER([include/ta_config.h])
+AC_CONFIG_HEADERS([include/ta_config.h])
 AM_INIT_AUTOMAKE([foreign subdir-objects -Wall -Werror])
 
 # Checks for programs.
 AM_PROG_AR
 AC_PROG_CC
-AC_PROG_LIBTOOL
+LT_INIT
+
+# Autoupdate added the next two lines to ensure that your configure
+# script's behavior did not change.  They are probably safe to remove.
+AC_CHECK_INCLUDES_DEFAULT
+AC_PROG_EGREP
 
-# Checks for header files.
-AC_HEADER_STDC
 AC_CHECK_HEADERS([float.h inttypes.h limits.h locale.h stddef.h stdint.h stdlib.h string.h unistd.h wchar.h wctype.h])
 
 # Checks for typedefs, structures, and compiler characteristics.
@@ -26,7 +29,6 @@ AC_C_VOLATILE
 AC_CHECK_TYPES([ptrdiff_t])
 
 # Checks for library functions.
-AC_TYPE_SIGNAL
 AC_FUNC_STRCOLL
 AC_FUNC_STRFTIME
 AC_FUNC_STRTOD