1 files changed, 21 insertions, 1 deletions
diff --git a/scripts/build-vtest.sh b/scripts/build-vtest.sh
index 4db35d6..9ae4306 100755
--- a/scripts/build-vtest.sh
+++ b/scripts/build-vtest.sh
@@ -6,5 +6,25 @@ curl -fsSL https://github.com/vtest/VTest/archive/master.tar.gz -o VTest.tar.gz
 mkdir ../vtest
 tar xvf VTest.tar.gz -C ../vtest --strip-components=1
 # Special flags due to: https://github.com/vtest/VTest/issues/12
-make -C ../vtest FLAGS="-O2 -s -Wall"
 
+# Note: do not use "make -C ../vtest", otherwise MAKEFLAGS contains "w"
+# and fails (see Options/Recursion in GNU Make doc, it contains the list
+# of options without the leading '-').
+# MFLAGS works on BSD but misses variable definitions on GNU Make.
+# Better just avoid the -C and do the cd ourselves then.
+
+cd ../vtest
+
+set +e
+CPUS=${CPUS:-$(nproc 2>/dev/null)}
+CPUS=${CPUS:-1}
+set -e
+
+#
+# temporarily detect Apple Silicon (it's using /opt/homebrew instead of /usr/local)
+#
+if test -f /opt/homebrew/include/pcre2.h; then
+   make -j${CPUS} FLAGS="-O2 -s -Wall" INCS="-Isrc -Ilib -I/usr/local/include -I/opt/homebrew/include -pthread"
+else
+   make -j${CPUS} FLAGS="-O2 -s -Wall"
+fi