From 21a447530614d4fe90de1e8c7709ea6b9c7cc506 Mon Sep 17 00:00:00 2001
From: "James N. V. Cash" <james.cash@occasionallycogent.com>
Date: Sun, 11 Sep 2022 18:55:46 -0400
Subject: [PATCH] Makefile: Allow specifying the path to emacs

Running emacs on macOS, the emacs binary is inside the app bundle, not
on the path, so it's useful to be able to specify it.
---
 Makefile | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/Makefile b/Makefile
index 0846ede..a2bb127 100644
--- a/Makefile
+++ b/Makefile
@@ -14,6 +14,8 @@ SWIPL      ?= swipl
 SWIPLBASE   = $(shell $(SWIPL) --dump-runtime-variables | grep PLBASE   | cut -f 2 -d = | cut -f 1 -d ';')
 SWIPLLIBDIR = $(shell $(SWIPL) --dump-runtime-variables | grep PLLIBDIR | cut -f 2 -d = | cut -f 1 -d ';')
 
+EMACS ?= emacs
+
 TARGET   = $(BASENAME)-module.$(SOEXT)
 OBJECT   = $(BASENAME).o
 SOURCE   = $(BASENAME).c
@@ -42,9 +44,9 @@ clean:
 	rm -f $(TARGET) $(OBJECT) $(BASENAME).info $(BASENAME).texi $(BASENAME).html
 
 $(BASENAME).info:: README.org
-	emacs -Q --batch --eval "(require 'ox-texinfo)" \
+	$(EMACS) -Q --batch --eval "(require 'ox-texinfo)" \
 		--eval "(with-current-buffer (find-file \"README.org\") (org-export-to-file (quote texinfo) \"$@\" nil nil nil nil nil (quote org-texinfo-compile)))"
 
 check: $(TARGET)
-	emacs --batch --eval '(add-to-list (quote load-path) (expand-file-name "."))' \
+	$(EMACS) --batch --eval '(add-to-list (quote load-path) (expand-file-name "."))' \
 		-l ert -l sweep -l sweep-tests.el -f ert-run-tests-batch-and-exit
-- 
2.39.2