From 97af579397311618ca9d66e39923639140b877f2 Mon Sep 17 00:00:00 2001
From: Gale Faraday <k4mu1kazum4@gmail.com>
Date: Wed, 6 Aug 2025 16:20:43 -0500
Subject: [PATCH] feat(version): added support for building version information

---
 .gitignore    |  3 +++
 Makefile      | 13 +++++++++++--
 genver.sh     | 17 +++++++++++++++++
 src/version.h |  5 +++++
 4 files changed, 36 insertions(+), 2 deletions(-)
 create mode 100755 genver.sh
 create mode 100644 src/version.h

diff --git a/.gitignore b/.gitignore
index 602bc80..136f000 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,5 @@
 bbs
 build/
+
+# Machine generated files:
+src/version.c
diff --git a/Makefile b/Makefile
index 0e1cc61..9ada612 100644
--- a/Makefile
+++ b/Makefile
@@ -3,7 +3,10 @@
 # Makefile for Amber's BBS Interface
 # Buildsys by Gale Faraday
 
-.PHONY: all clean run
+# `generate` must be called before `all` to build version information and other
+# machine generated files.
+
+.PHONY: all clean run generate
 .SUFFIXES:
 
 .DEFAULT_GOAL := all
@@ -11,6 +14,7 @@
 TARGET     := $(shell basename $(CURDIR))
 SOURCES    := src/
 BUILD      := build/
+GENABLES   := $(SOURCES)version.c
 OBJS       := $(patsubst $(SOURCES)%.c,$(BUILD)%.o,$(wildcard $(SOURCES)*.c))
 EXECUTABLE := $(TARGET)
 
@@ -27,7 +31,12 @@ run: $(EXECUTABLE)
 
 .IGNORE: clean
 clean:
-	@rm -rvf $(BUILD) $(EXECUTABLE)
+	@rm -rvf $(BUILD) $(EXECUTABLE) $(GENABLES)
+
+generate: $(GENABLES)
+
+$(GENABLES): genver.sh
+	./genver.sh
 
 $(EXECUTABLE): $(OBJS)
 	$(LD) $(LDFLAGS) -o $@ $^
diff --git a/genver.sh b/genver.sh
new file mode 100755
index 0000000..e9038a1
--- /dev/null
+++ b/genver.sh
@@ -0,0 +1,17 @@
+#!/usr/bin/env bash
+
+# Script to generate version information file
+
+# Current git tag
+TAG="$(git describe --always --dirty --tags)"
+
+# Output filename
+OUTFILE='src/version.c'
+
+sed -e "s/<HASH>/$TAG/g" <<EOF > "$OUTFILE"
+/* Build version information. This file generated by genver.sh */
+
+const char GIT_HASH[] = "<HASH>";
+const char CC_VERSION[] = __VERSION__;
+const char BUILD_DATE[] = __DATE__;
+EOF
diff --git a/src/version.h b/src/version.h
new file mode 100644
index 0000000..fcb477c
--- /dev/null
+++ b/src/version.h
@@ -0,0 +1,5 @@
+/* Header for version information constants */
+
+extern const char GIT_HASH[];
+extern const char CC_VERSION[];
+extern const char BUILD_DATE[];