# HG changeset patch
# User Sam James <sam@gentoo.org>
# Date 1659168362 -3600
#      Sat Jul 30 09:06:02 2022 +0100
# Node ID aa77bc8461ee15501a0298dafd53c97447aa30d0
# Parent  0a06f497d58839e4100b3be46bbdcd14d8147d75
configure: fix bashism

configure scripts need to be runnable with a POSIX-compliant /bin/sh.

On many (but not all!) systems, /bin/sh is provided by Bash, so errors
like this aren't spotted. Notably Debian defaults to /bin/sh provided
by dash which doesn't tolerate such bashisms as '=='.

This retains compatibility with bash.

Fixes configure warnings/errors like:
```
checking for gs... /usr/sbin/gs
./configure: 31719: test: #: unexpected operator
checking for Windows fonts directory (location of arial.ttf)... /usr/share/fonts/corefonts/
```

--- a/configure.ac
+++ b/configure.ac
@@ -3148,7 +3148,7 @@ have_ralcgm='no'  ; if test "$CGMDecodeD
 AM_CONDITIONAL([HasPSDelegate],[test "$have_gs" = 'yes'])
 
 # Tests for programs only used while in maintainer mode
-if test "$MAINT" == '' ; then
+if test "$MAINT" = '' ; then
    # Test for optional rst2html.py utility and define automake conditional HasRST2HTML if found.
    AC_CHECK_PROGS([RST2HTML],[rst2html.py rst2html])