From c1d3f5952f621a553c122cee7a20e990d982a715 Mon Sep 17 00:00:00 2001
From: NIIBE Yutaka <gniibe@fsij.org>
Date: Fri, 28 Jul 2023 08:57:01 +0900
Subject: build: Apply libtool.patch at the last stage of configure.

* build-aux/libtool.patch: New.
* build-aux/ltmain.sh: Revert our local change to original.
* configure.ac [x86_64-*mingw32*] (libtool-patch): Introduce a
construct with AC_CONFIG_COMMANDS to apply build-aux/libtool.patch
after libtool generation.

--

GnuPG-bug-id: 6619
Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
---
 build-aux/libtool.patch | 45 +++++++++++++++++++++++++++++++++++++++++++++
 build-aux/ltmain.sh     | 14 +-------------
 configure.ac            | 12 ++++++++++++
 3 files changed, 58 insertions(+), 13 deletions(-)
 create mode 100644 build-aux/libtool.patch

diff --git a/build-aux/libtool.patch b/build-aux/libtool.patch
new file mode 100644
index 0000000..cc1340e
--- /dev/null
+++ b/build-aux/libtool.patch
@@ -0,0 +1,45 @@
+#
+# We used to maintain our local changes to ltmain.sh.
+#
+# But it doesn't work well when a user tries to run libtoolize with
+# newer libtool on his system.
+#
+# So, instead of keeping a change in ltmain.sh, we introduce patching
+# libtool, at the last stage of configure just libtool is generated.
+#
+# When new libtool is released, please update this patch.  Currently,
+# we assume:
+#
+# package_revision=2.4.7
+#
+
+--- libtool.orig	2023-07-27 15:45:41.026220580 +0900
++++ libtool	2023-07-27 11:20:52.933295428 +0900
+@@ -9016,6 +9016,11 @@
+ 	    elif test -n "$soname_spec"; then
+ 	      # bleh windows
+ 	      case $host in
++              x86_64-*mingw32*)
++                func_arith $current - $age
++		major=$func_arith_result
++		versuffix="6-$major"
++		;;
+ 	      *cygwin* | mingw* | *cegcc* | *os2*)
+ 	        func_arith $current - $age
+ 		major=$func_arith_result
+@@ -9794,7 +9799,14 @@
+ 	  # extension on DOS 8.3 file systems.
+ 	  func_arith $current - $age
+ 	  major=$func_arith_result
+-          versuffix="-$major"
++          case $host in
++          x86_64-*mingw32*)
++             versuffix="6-$major"
++             ;;
++          *)
++             versuffix="-$major"
++             ;;
++          esac
+ 	  ;;
+ 
+ 	*)
diff --git a/build-aux/ltmain.sh b/build-aux/ltmain.sh
index ab1b7dc..f495350 100644
--- a/build-aux/ltmain.sh
+++ b/build-aux/ltmain.sh
@@ -8497,11 +8497,6 @@ func_mode_link ()
 	    elif test -n "$soname_spec"; then
 	      # bleh windows
 	      case $host in
-              x86_64-*mingw32*)
-                func_arith $current - $age
-		major=$func_arith_result
-		versuffix="6-$major"
-		;;
 	      *cygwin* | mingw* | *cegcc* | *os2*)
 	        func_arith $current - $age
 		major=$func_arith_result
@@ -9280,14 +9275,7 @@ func_mode_link ()
 	  # extension on DOS 8.3 file systems.
 	  func_arith $current - $age
 	  major=$func_arith_result
-          case $host in
-          x86_64-*mingw32*)
-             versuffix="6-$major"
-             ;;
-          *)
-             versuffix="-$major"
-             ;;
-          esac
+          versuffix="-$major"
 	  ;;
 
 	*)
diff --git a/configure.ac b/configure.ac
index ca7731c..385ccf8 100644
--- a/configure.ac
+++ b/configure.ac
@@ -156,6 +156,18 @@ LT_PREREQ([2.2.6])
 LT_INIT([win32-dll disable-static])
 LT_LANG([Windows Resource])
 
+#
+# Apply a patch (locally maintained one of ours) to libtool
+#
+case $host in
+  x86_64-*mingw32*)
+AC_CONFIG_COMMANDS([libtool-patch],[[
+  patch -p0 < $srcdir/build-aux/libtool.patch
+]])
+  ;;
+  *)
+  ;;
+esac
 
 # We need to compile and run a program on the build machine.
 AX_CC_FOR_BUILD
-- 
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