First commit

.gitignore

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+*.inc
+tagger

Makefile

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+include premake.make
+
+BIN := $(shell basename $$(pwd))
+COMMIT != git log 2>/dev/null | sed -e '1s/^commit //;q'
+
+MANSECTION ?= 1
+MANPAGE := $(BIN).$(MANSECTION)
+
+SRCS := $(notdir $(wildcard src/*.cpp))
+OBJS := $(SRCS:.cpp=.o)
+DEPS := $(SRCS:.cpp=.dep)
+
+BUILDDIR := build/intermediates/
+PREFIX ?= /usr/local
+BINDIR ?= $(PREFIX)/bin
+MANDIR ?= $(PREFIX)/man/man
+CONFIGDIR ?= $(PREFIX)/etc
+DATADIR ?= $(PREFIX)/share
+DOCDIR ?= $(DATADIR)/$(BIN)/doc
+
+CXX ?= g++
+RM := /bin/rm -rf
+INSTALL := /usr/bin/install -c
+
+CXXFLAGS += -Wshadow -Wall -Wpedantic -Wextra -Wno-unused-parameter
+CXXFLAGS += -g3 -std=c++20
+ifeq ($(DEBUG),1)
+	CXXFLAGS += -D DEBUG -O0
+	CONFIG := debug
+else
+	CXXFLAGS += -D NDEBUG -O3
+	CONFIG := release
+endif
+OUTDIR := build/$(CONFIG)/
+
+vpath %.cpp src
+vpath %.dep $(BUILDDIR)
+vpath %.o $(BUILDDIR)
+
+.PHONY: all clean install prebuild test dist-clean
+
+all: prebuild $(OUTDIR)$(BIN)
+
+prebuild: src/commit.inc
+	@mkdir -p $(BUILDDIR) $(OUTDIR)
+	sed -i.bak -e '1s/".*"/"$(COMMIT)"/' src/commit.inc
+	@rm src/commit.inc.bak
+
+src/commit.inc:
+	echo 'const char* commit = "";' > $@
+
+$(OUTDIR)$(BIN): $(OBJS)
+	$(CXX) -o $(OUTDIR)$(BIN) $(LDFLAGS) $(addprefix $(BUILDDIR),$(OBJS)) $(LDLIBS)
+	@ln -sf $(OUTDIR)$(BIN) $(BIN)
+
+%.o %.dep: %.cpp
+	$(CXX) $(CXXFLAGS) -MMD -MP -MT $@ -MF $*.dep -c $<
+	@mv $@ $*.dep $(BUILDDIR)
+
+-include $(addprefix $(BUILDDIR), $(DEPS))
+
+test:
+	$(MAKE) -C tests && tests/tests
+
+clean:
+	$(RM) $(BUILDDIR)
+	$(MAKE) -C tests clean
+
+dist-clean:
+	$(RM) build $(BIN) src/commit.inc
+	$(MAKE) -C tests clean
+
+install:
+	$(INSTALL) -d $(BINDIR)
+	$(INSTALL) $(OUTDIR)$(BIN) $(BINDIR)
+	$(INSTALL) -d $(MANDIR)$(MANSECTION)
+	$(INSTALL) -m 0644 $(MANPAGE) $(MANDIR)$(MANSECTION)
+
+-include postmake.make

premake.make

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+LDLIBS :=
+MANSECTION := 1

src/main.cpp

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+#include <iostream>
+#include <cstdlib>
+#include <string>
+#include <stdexcept>
+#include <getopt.h>
+#include "commit.inc"
+
+void print_help() {
+    std::cout << "usage: tagger [-h|--version]\n";
+    std::cout << "  -h, --help    show this help text and exit\n";
+    std::cout << "  --version     show version number and exit\n";
+}
+
+void print_version() {
+    std::cout << "tagger version 1.0";
+    if (commit[0] != '\0') {
+        std::cout << ", build " << commit;
+    }
+    std::cout << std::endl;
+}
+
+int main(int argc, char* argv[]) {
+    try {
+        int opt_char, opt_val;
+        struct option long_options[] = {
+            {"help", no_argument, nullptr, 'h'},
+            {"version", no_argument, &opt_val, 1},
+            {nullptr, 0, nullptr, 0}
+        };
+        while ((opt_char = getopt_long(argc, argv, "h", long_options, nullptr)) != -1) {
+            std::string arg {optarg ? optarg : ""};
+            switch (opt_char) {
+                case 0: {
+                    // handle long-only options here
+                    switch (opt_val) {
+                        case 1:
+                            print_version();
+                            return EXIT_SUCCESS;
+                    }
+                    break;
+                }
+                case 'h':
+                    print_help();
+                    return EXIT_SUCCESS;
+                case '?':
+                    throw std::runtime_error("unrecognized option");
+            }
+        }
+        if (optind == argc) {
+            // here when no file args
+        }
+        for (int i = optind; i < argc; ++i) {
+            try {
+                // process file argv[i]
+            } catch (const std::runtime_error& ex) {
+                std::cerr << "tagger: " << ex.what() << '\n';
+            }
+        }
+        std::cout << "hello, tagger\n";
+    } catch (const std::exception& ex) {
+        std::cerr << "tagger: " << ex.what() << '\n';
+        return EXIT_FAILURE;
+    }
+    return EXIT_SUCCESS;
+}

tagger.1

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+.Dd $Mdocdate$
+.Dt tagger 1
+.Os
+.Sh NAME
+.Nm tagger
+.Nd one line about what it does
+.\" .Sh LIBRARY
+.\" For sections 2, 3, and 9	only.
+.\" Not used in OpenBSD.
+.Sh SYNOPSIS
+.Nm
+.Fl h
+.Nm
+.Fl \-version
+.Nm
+.Op Ar
+.Sh DESCRIPTION
+The
+.Nm
+utility processes files ...
+When no file arguments are given,
+.Nm
+will read from the standard input.
+.Pp
+The options are as follows:
+.Bl -tag -width Ds
+.It Fl h, \-help
+Print help text and exit.
+.It Fl \-version
+Print version info and exit.
+.El
+.\" .Sh CONTEXT
+.\" For section 9 functions only.
+.\" .Sh IMPLEMENTATION NOTES
+.\" Not used in OpenBSD.
+.\" .Sh RETURN VALUES
+.\" For sections 2, 3, and 9 function return values only.
+.\" .Sh ENVIRONMENT
+.\" For sections 1, 6, 7, and 8 only.
+.\" .Sh FILES
+.Sh EXIT STATUS
+.\" For sections 1, 6, and 8 only.
+.Nm
+exits 0 on success, and 1 if an error occurs.
+.\" .Sh EXAMPLES
+.\" .Sh DIAGNOSTICS
+.\" For sections 1, 4, 6, 7, 8, and 9 printf/stderr messages only.
+.\" .Sh ERRORS
+.\" For sections 2, 3, 4, and 9 errno settings only.
+.\" .Sh SEE ALSO
+.\" .Xr foobar 1
+.\" .Sh STANDARDS
+.\" .Sh HISTORY
+.Sh AUTHORS
+Bob Polis
+.\" .Sh CAVEATS
+.\" .Sh BUGS
+.\" .Sh SECURITY CONSIDERATIONS
+.\" Not used in OpenBSD.

tests/Makefile

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+include ../premake.make
+LDLIBS += -lboost_unit_test_framework
+
+BIN := $(shell basename $$(pwd))
+
+SRCS := $(notdir $(wildcard src/*.cpp))
+SRCS += $(notdir $(filter-out ../src/main.cpp,$(wildcard ../src/*.cpp)))
+OBJS := $(SRCS:.cpp=.o)
+DEPS := $(SRCS:.cpp=.d)
+
+BUILDDIR := build/intermediates/
+
+CXX ?= g++
+RM := /bin/rm -rf
+
+CXXFLAGS += -Wshadow -Wall -Wpedantic -Wextra -Wno-unused-parameter
+CXXFLAGS += -g3 -std=c++20 -I../src
+ifeq ($(DEBUG),1)
+	CXXFLAGS += -D DEBUG -O0
+	CONFIG := debug
+else
+	CXXFLAGS += -D NDEBUG -O3
+	CONFIG := release
+endif
+OUTDIR := build/$(CONFIG)/
+
+vpath %.cpp src ../src
+vpath %.d $(BUILDDIR)
+vpath %.o $(BUILDDIR)
+
+.PHONY: all clean prebuild
+
+all: prebuild $(OUTDIR)$(BIN)
+
+prebuild:
+	@mkdir -p $(BUILDDIR) $(OUTDIR)
+
+$(OUTDIR)$(BIN): $(OBJS)
+	$(CXX) $(addprefix $(BUILDDIR),$(OBJS)) $(LDFLAGS) $(LDLIBS) -o $(OUTDIR)$(BIN)
+	@ln -sf $(OUTDIR)$(BIN) $(BIN)
+
+%.o %.d: %.cpp
+	$(CXX) $(CXXFLAGS) -MMD -MP -MT $@ -MF $*.d -c $<
+	@mv $@ $*.d $(BUILDDIR)
+
+-include $(addprefix $(BUILDDIR), $(DEPS))
+
+clean:
+	$(RM) build $(BIN)
+
+-include postmake.make

tests/src/main.cpp

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+#define BOOST_TEST_MODULE My Test
+#define BOOST_TEST_DYN_LINK
+#include <boost/test/unit_test.hpp>
+
+BOOST_AUTO_TEST_CASE(first_test)
+{
+    BOOST_TEST(1 == 1);
+}