From b2d56bbc9abd4f8fc8a991bcd230b713a9575d9f Mon Sep 17 00:00:00 2001
From: emma <emma@tebibyte.media>
Date: Sat, 9 Mar 2024 22:02:19 -0700
Subject: [PATCH] Makefile: even more changes

---
 Makefile | 13 +++++++------
 1 file changed, 7 insertions(+), 6 deletions(-)

diff --git a/Makefile b/Makefile
index 66572fc..dd77985 100644
--- a/Makefile
+++ b/Makefile
@@ -16,11 +16,15 @@
 DESTDIR=./dist
 PREFIX=/usr/local
 
+SYSEXITS!=printf '\043include <sysexits.h>\n' | cpp -M - | sed 's/ /\n/g' \
+	| sed -n 's/sysexits\.h//p' || printf 'include/\n'
+
 CC?=cc
 RUSTC?=rustc
 RUSTLIBS=--extern getopt=build/o/libgetopt.rlib \
 	--extern sysexits=build/o/libsysexits.rlib \
 	--extern strerror=build/o/libstrerror.rlib
+CFLAGS+=-I$(SYSEXITS)
 
 .PHONY: all
 all: dj false fop hru intcmp rpn scrut str strcmp true
@@ -60,15 +64,12 @@ build/o/libstrerror.rlib: build src/strerror.rs
 	$(RUSTC) $(RUSTFLAGS) --crate-type=lib -o $@ \
 		src/strerror.rs
 
-build/o/libsysexits.rlib: build include/sysexits.h
+build/o/libsysexits.rlib: build $(SYSEXITS)sysexits.h
 	# bandage solution until bindgen(1) gets stdin support
-	printf '#define EXIT_FAILURE 1\n' | cat - include/sysexits.h \
+	printf '#define EXIT_FAILURE 1\n' | cat - $(SYSEXITS)sysexits.h \
 		> build/include/sysexits.h 
 	bindgen --default-macro-constant-type signed --use-core --formatter=none \
-		"$$(printf '#include <sysexits.h>\n' \
-			| cpp -M -idirafter "build/include" - \
-			| sed 's/ /\n/g' | grep sysexits.h)" \
-		| $(RUSTC) $(RUSTFLAGS) --crate-type lib -o $@ -
+		build/include/sysexits.h | $(RUSTC) $(RUSTFLAGS) --crate-type lib -o $@ -
 
 .PHONY: dj
 dj: build/bin/dj