From b08b92248b7f9ee61b7039ac4abd2acf68c6b4de Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?J=C5=8Dshin?= <git@wholezero.org>
Date: Sun, 17 Dec 2023 01:49:49 -0500
Subject: [PATCH] mmake: -j$(nproc), passthrough o//

Now `mmake o/ape/ape.elf` works.
---
 tool/zsh/mmake |  9 ++++++---
 tool/zsh/nproc | 18 ++++++++++++++++++
 2 files changed, 24 insertions(+), 3 deletions(-)
 create mode 100644 tool/zsh/nproc

diff --git a/tool/zsh/mmake b/tool/zsh/mmake
index 78418f1d5..e11aa9d29 100644
--- a/tool/zsh/mmake
+++ b/tool/zsh/mmake
@@ -23,14 +23,17 @@ esac
 }
 local -a targs
 local -a flags
+local j=-j$(autoload -Uz nproc >/dev/null 2>&1 ; nproc)
 while (( $# > 0 )); do
   case $1 in
-    -*|*=*) flags+=($1); shift ;;
-    *)      targs+=($1); shift ;;
+    -j*)    j=$1;         shift ;;
+    -*|*=*) flags+=($1);  shift ;;
+    o/*)    flags+=($1);  shift ;;  # cheat; passthru
+    *)      targs+=($1);  shift ;;
   esac
 done
 local make
 [[ -x /opt/cosmocc/bin/make ]] && make=/opt/cosmocc/bin/make
 [[ -z $make ]] && make=build/bootstrap/make.com
 ( set -x
-  exec $make $flags MODE=$mode ${(@)targs/#/o/$mode/} )
+  exec $make $j $flags MODE=$mode ${(@)targs/#/o/$mode/} )
diff --git a/tool/zsh/nproc b/tool/zsh/nproc
new file mode 100644
index 000000000..e1151857f
--- /dev/null
+++ b/tool/zsh/nproc
@@ -0,0 +1,18 @@
+[[ -x $(whence -p nproc) ]] && {
+  command nproc && {
+    unfunction nproc
+    return
+  }
+}
+[[ -x $(which sysctl) ]] && {
+  nproc() {
+    sysctl -n hw.ncpu
+  }
+  nproc && return
+}
+# TODO other platforms
+echo nproc: no implementation found >&2
+nproc() {
+  echo 2
+}
+nproc