From 0035cc4ff492cab91adeb49d0c577fe5982064bd Mon Sep 17 00:00:00 2001
From: Tavian Barnes <tavianator@tavianator.com>
Date: Thu, 18 Apr 2024 15:27:27 -0400
Subject: config: Check for program_invocation_short_name

This lets us pick it up on musl too, since there's no __MUSL__ macro.

Link: https://wiki.musl-libc.org/faq#Q:-Why-is-there-no-%3Ccode%3E__MUSL__%3C/code%3E-macro?
---
 config/header.mk | 38 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 38 insertions(+)
 create mode 100644 config/header.mk

(limited to 'config/header.mk')

diff --git a/config/header.mk b/config/header.mk
new file mode 100644
index 0000000..3a1271e
--- /dev/null
+++ b/config/header.mk
@@ -0,0 +1,38 @@
+# Copyright © Tavian Barnes <tavianator@tavianator.com>
+# SPDX-License-Identifier: 0BSD
+
+# Makefile that generates gen/config.h
+
+include config/prelude.mk
+include ${GEN}/config.mk
+include config/exports.mk
+
+# All header fragments we generate
+HEADERS := \
+    ${GEN}/getprogname.h \
+    ${GEN}/getprogname-gnu.h
+
+${GEN}/config.h: ${HEADERS}
+	${MSG} "[ GEN] ${TGT}"
+	printf '// %s\n' "${TGT}" >$@
+	printf '#ifndef BFS_CONFIG_H\n' >>$@
+	printf '#define BFS_CONFIG_H\n' >>$@
+	cat ${.ALLSRC} >>$@
+	printf '#endif // BFS_CONFIG_H\n' >>$@
+	cat ${.ALLSRC:%=%.log} >$@.log
+	${RM} ${.ALLSRC} ${.ALLSRC:%=%.log}
+	${VCAT} $@
+.PHONY: ${GEN}/config.h
+
+# The C source file to attempt to compile
+CSRC = ${@:${GEN}/%.h=config/%.c}
+
+${HEADERS}::
+	config/cc-define.sh ${CSRC} >$@ 2>$@.log
+	if ! [ "${IS_V}" ]; then \
+	    if grep -q 'true$$' $@; then \
+	        printf '[ CC ] %-${MSG_WIDTH}s  ✔\n' ${CSRC}; \
+	    else \
+	        printf '[ CC ] %-${MSG_WIDTH}s  ✘\n' ${CSRC}; \
+	    fi; \
+	fi
-- 
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