Upstream-PR: https://sourceforge.net/p/ta-lib/patches/6/
From 05375dd96c3bdec814214f37a6c49d4a27079960 Mon Sep 17 00:00:00 2001
From: orbea <orbea@riseup.net>
Date: Thu, 12 May 2022 11:13:59 -0700
Subject: [PATCH] Fix parallel Make issue with slibtool

---
 configure.in => configure.ac       |  4 ++++
 src/tools/gen_code/Makefile.am     | 13 ++++++++-----
 src/tools/gen_code/gen_code_bin.sh | 16 ++++++++++++++++
 src/tools/ta_regtest/Makefile.am   |  4 ++--
 4 files changed, 30 insertions(+), 7 deletions(-)
 rename configure.in => configure.ac (96%)
 create mode 100755 src/tools/gen_code/gen_code_bin.sh

diff --git a/configure.in b/configure.ac
similarity index 96%
rename from configure.in
rename to configure.ac
index d2e5784..359d400 100644
--- a/configure.in
+++ b/configure.ac
@@ -35,6 +35,10 @@ AC_FUNC_STRTOD
 AC_FUNC_VPRINTF
 AC_CHECK_FUNCS([floor isascii localeconv mblen memmove memset modf pow sqrt strcasecmp strchr strerror strncasecmp strrchr strstr strtol strtoul])
 
+# Checks for libm
+AC_CHECK_LIBM
+AC_SUBST([LIBM])
+
 # Versioning:
 # Only change this if library is no longer
 # ABI compatible with previous version
diff --git a/src/tools/gen_code/Makefile.am b/src/tools/gen_code/Makefile.am
index cb839c2..2ec2360 100644
--- a/src/tools/gen_code/Makefile.am
+++ b/src/tools/gen_code/Makefile.am
@@ -6,9 +6,12 @@ noinst_PROGRAMS = gen_code
 gen_code_SOURCES = gen_code.c
 
 gen_code_CPPFLAGS = -I../../ta_common
-gen_code_LDFLAGS = -L../../ta_common -L../../ta_abstract -L../../ta_func
-gen_code_LDADD = -lta_common -lta_abstract_gc -lta_func -lm
+gen_code_LDFLAGS = -no-undefined
+gen_code_LDADD = \
+	../../ta_common/libta_common.la \
+	../../ta_abstract/libta_abstract_gc.la \
+	../../ta_func/libta_func.la \
+	$(LIBM)
 
-all-local:
-	$(MAKE) $(AM_MAKEFLAGS) gen_code
-	cp gen_code ../../../bin
+all-local: gen_code
+	$(LIBTOOL) --mode=execute ./gen_code_bin.sh gen_code
diff --git a/src/tools/gen_code/gen_code_bin.sh b/src/tools/gen_code/gen_code_bin.sh
new file mode 100755
index 0000000..b19fd09
--- /dev/null
+++ b/src/tools/gen_code/gen_code_bin.sh
@@ -0,0 +1,16 @@
+#!/bin/sh
+
+# This is a work around for a slibtool bug with --mode=execute
+#
+# With slibtool the gen_code binary is created in the .libs directory while GNU
+# libtool outputs in the same directory as the Makefile. This means that cp(1)
+# needs to be invoked with $(LIBTOOL) --mode=execute.
+#
+# However slibtool currently has a bug where the destination argument is dropped
+# which will result in the command failing.
+#
+# See https://bugs.gentoo.org/790770
+
+set -eu
+
+cp "${1}" ../../../bin
diff --git a/src/tools/ta_regtest/Makefile.am b/src/tools/ta_regtest/Makefile.am
index 64229e2..255a87e 100644
--- a/src/tools/ta_regtest/Makefile.am
+++ b/src/tools/ta_regtest/Makefile.am
@@ -34,5 +34,5 @@ ta_regtest_CPPFLAGS = -I../../ta_func \
 		      -I../../ta_common/mt \
 		      -I../../ta_common \
 		      -I../../ta_abstract
-ta_regtest_LDFLAGS = -L../.. -lta_lib \
-		     -lm
+ta_regtest_LDFLAGS = -no-undefined
+ta_regtest_LDADD = ../../libta_lib.la $(LIBM)
-- 
2.35.1