7 files changed, 115 insertions, 0 deletions

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..02eb89a
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,3 @@
+/build
+/issim
+/issim-static
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..6d3a4ab
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,62 @@
+OPTIMIZE ?= -O3
+DEBUG ?= -g
+
+AR ?= ar
+CXX ?= g++
+
+CXXFLAGS := -Wall -Werror -std=c++20 -fPIC -iquote . ${OPTIMIZE} ${DEBUG}
+
+PARTS := $(shell find * -type d -\( -name build -prune -o -print -\))
+PARTARS := $(addprefix build/lib, $(addsuffix .a, ${PARTS}))
+PARTSOS := $(addprefix build/lib, $(addsuffix .so, ${PARTS}))
+
+MAINOBJS := $(addprefix build/, $(addsuffix .o, $(basename $(wildcard *.cpp))))
+MAINOBJS += build/git-tag.o
+
+all: issim
+
+issim: build/issim-dynamic
+        @ln -sf $< $@
+.PHONY: issim
+
+issim-static: build/issim-static
+        @ln -sf $< $@
+.PHONY: issim-static
+
+build/issim-dynamic: ${MAINOBJS} ${PARTSOS}
+        @mkdir -p $(dir $@)
+        ${CXX} ${CXXFLAGS} -o $@ $+
+
+build/issim-static: ${MAINOBJS} ${PARTARS}
+        @mkdir -p $(dir $@)
+        ${CXX} ${CXXFLAGS} -o $@ $+
+
+clean:
+        rm -rf build issim issim-static
+.PHONY: clean
+
+build/git-tag.cpp:
+        @mkdir -p $(dir $@)
+        ./get-git-tag > $@
+.PHONY: build/git-tag.cpp
+
+build/%.o: %.cpp Makefile
+        @mkdir -p $(dir $@)
+        ${CXX} ${CXXFLAGS} -c -o $@ $<
+
+build/%.o: build/%.cpp Makefile
+        @mkdir -p $(dir $@)
+        ${CXX} ${CXXFLAGS} -c -o $@ $<
+
+.SUFFIXES:
+.SECONDARY:
+
+.SECONDEXPANSION:
+
+build/lib%.a: $$(addprefix build/, $$(addsuffix .o, $$(basename $$(wildcard %/*.cpp))))
+        @mkdir -p $(dir $@)
+        ${AR} cr $@ $+
+
+build/lib%.so: $$(addprefix build/, $$(addsuffix .o, $$(basename $$(wildcard %/*.cpp))))
+        @mkdir -p $(dir $@)
+        ${CXX} ${CXXFLAGS} -shared -o $@ $+
diff --git a/aisa/aisa.cpp b/aisa/aisa.cpp
new file mode 100644
index 0000000..0c806de
--- /dev/null
+++ b/aisa/aisa.cpp
@@ -0,0 +1,12 @@
+#include <iostream>
+
+#include "aisa/aisa.h"
+
+namespace aisa {
+
+    void do_something()
+    {
+        std::cout << "Hello, world!\n";
+    }
+
+}
diff --git a/aisa/aisa.h b/aisa/aisa.h
new file mode 100644
index 0000000..b570d6b
--- /dev/null
+++ b/aisa/aisa.h
@@ -0,0 +1,7 @@
+#pragma once
+
+namespace aisa {
+
+    void do_something();
+
+}
diff --git a/get-git-tag b/get-git-tag
new file mode 100755
index 0000000..cb4e2fa
--- /dev/null
+++ b/get-git-tag
@@ -0,0 +1,15 @@
+#!/bin/bash
+
+set -u
+
+TAG="$(git describe --always --tags --long --dirty 2> /dev/null)"
+
+if [[ "$TAG" == "" ]]; then
+    TAG="unknown"
+fi
+
+cat <<END
+#include <string>
+
+std::string GIT_TAG = "$TAG";
+END
diff --git a/git-tag.h b/git-tag.h
new file mode 100644
index 0000000..280f0c7
--- /dev/null
+++ b/git-tag.h
@@ -0,0 +1,5 @@
+#pragma once
+
+#include <string>
+
+extern const std::string GIT_TAG;
diff --git a/main.cpp b/main.cpp
new file mode 100644
index 0000000..6b7b0f4
--- /dev/null
+++ b/main.cpp
@@ -0,0 +1,11 @@
+#include <iostream>
+
+#include "aisa/aisa.h"
+#include "git-tag.h"
+
+int main(int argc, const char *argv[])
+{
+    std::cout << "Version " << GIT_TAG << "\n";
+    aisa::do_something();
+    return 0;
+}