https://sqlite.org/forum/info/14274389fb2
https://bugs.gentoo.org/942917
https://bugs.gentoo.org/942918
https://github.com/sqlite/sqlite/commit/a40e6e927313ed97a895ff7c022eff705e50b1e6

From a40e6e927313ed97a895ff7c022eff705e50b1e6 Mon Sep 17 00:00:00 2001
From: stephan <stephan@noemail.net>
Date: Wed, 30 Oct 2024 00:35:08 +0000
Subject: [PATCH] Replace 3 instances of the == 'test' shell command operator
 with =, as == is apparently not as portable across shells. Problem reported
 in [forum:14274389fb2|forum post 14274389fb2].

FossilOrigin-Name: 68199c40fedeb07a3f9c5024fac6376a0579a13b0e5690aef6238e3e22b9c1b7
--- a/configure
+++ b/configure
@@ -10334,7 +10334,7 @@ else
 fi
 
 original_use_tcl=${use_tcl}
-if test x"${with_tclsh}" == x -a x"${with_tcl}" == x; then
+if test x"${with_tclsh}" = x -a x"${with_tcl}" = x; then
   for ac_prog in tclsh9.0 tclsh8.6 tclsh
 do
   # Extract the first word of "$ac_prog", so it can be a program name with args.
@@ -10453,7 +10453,7 @@ $as_echo "unable to run tests because no tclConfig.sh file could be located" >&6
   HAVE_TCL=0
 fi
 
-if test x"$TCLSH_CMD" == x; then
+if test x"$TCLSH_CMD" = x; then
   TCLSH_CMD=${TCL_EXEC_PREFIX}/bin/tclsh${TCL_VERSION}
   if test ! -x ${TCLSH_CMD}; then
     TCLSH_CMD_2=${TCL_EXEC_PREFIX}/bin/tclsh
--- a/configure.ac
+++ b/configure.ac
@@ -124,7 +124,7 @@ AC_ARG_WITH(tcl, AS_HELP_STRING([--with-tcl=DIR],[directory containing (tclConfi
 AC_ARG_ENABLE(tcl, AS_HELP_STRING([--disable-tcl],[omit building accessory programs that require TCL-dev]),
       [use_tcl=$enableval],[use_tcl=yes])
 original_use_tcl=${use_tcl}
-if test x"${with_tclsh}" == x -a x"${with_tcl}" == x; then
+if test x"${with_tclsh}" = x -a x"${with_tcl}" = x; then
   AC_CHECK_PROGS(TCLSH_CMD, [tclsh9.0 tclsh8.6 tclsh],none)
   with_tclsh=${TCLSH_CMD}
 fi
@@ -195,7 +195,7 @@ else
   HAVE_TCL=0
 fi
 AC_SUBST(HAVE_TCL)
-if test x"$TCLSH_CMD" == x; then
+if test x"$TCLSH_CMD" = x; then
   TCLSH_CMD=${TCL_EXEC_PREFIX}/bin/tclsh${TCL_VERSION}
   if test ! -x ${TCLSH_CMD}; then
     TCLSH_CMD_2=${TCL_EXEC_PREFIX}/bin/tclsh