[LyX/2.3.x] Update build script

[Richard Kimberly Heck]

commit a9338e796a9317106f18076846dad1d27c15a928
Author: Richard Kimberly Heck <rikiheck at lyx.org>
Date:   Sun Dec 11 11:13:44 2022 -0500

    Update build script
---
 development/tools/lyx-build |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/development/tools/lyx-build b/development/tools/lyx-build
index 0dd9088..a73ea12 100755
--- a/development/tools/lyx-build
+++ b/development/tools/lyx-build
@@ -23,7 +23,7 @@ if [ -z "$EDITOR" ]; then EDITOR=vi; fi
 # Option variables
 
 # Options to make, when we compile
-MAKEOPTS="-j8";
+MAKEOPTS="-j12";
 # Compile?
 COMPILE="YES";
 # Make patch file?
@@ -49,7 +49,7 @@ shift $(($OPTIND - 1));
 
 # Determine LyX version
 cd $SRCDIR/
-VERSION=$(head configure.ac | grep AC_INIT | perl -e 'while (<>) {m/AC_INIT\(LyX,([^,]+)/; print $1;}');
+VERSION=$(head configure.ac | grep AC_INIT | perl -e 'while (<>) {m/AC_INIT\(\[LyX\],\[([^,]+)\]/; print $1;}');
 
 # Development release?
 DEVEL_RELEASE="";