**The Surprisingly Dramatic History of Makefiles

Posted on by

(and Why We Still Can’t Escape Them)**

If you’ve ever typed make and watched your terminal explode into life, you’re using one of the oldest — and most persistent — build technologies in computing. Makefiles pre-date Linux, the modern Internet, and almost everything else we use today. And yet… they continue to power enormous swaths of the global software ecosystem.

This is the story of where Make came from, how it evolved, why configure and CMake were invented, what problems they solved (and created), and why Make still deserves a spot in your toolbox today.

1. The 1970s: Make Is Born

Back in 1976, programmers manually compiled files by hand:

cc foo.c -o foo
cc bar.c -o bar
cc baz.c -o baz

Change one file? Re-compile everything. Forget a dependency? Good luck debugging that.

Stuart Feldman at Bell Labs solved this with a single brilliant idea:

Describe what depends on what. Let the tool decide what to rebuild.

Make introduced three concepts we still use everywhere today:

1. Dependency Graphs

A target depends on other files:

foo.o: foo.c foo.h

If foo.h changes, everything depending on it should rebuild.

2. Rules

A recipe for how to build something:

cc -c foo.c -o foo.o

3. Incremental Rebuilds Using Timestamps

Only run commands for files older than their dependencies.

This was revolutionary. A big project could now rebuild in seconds instead of minutes or hours.

2. The 1980s–1990s: Make Takes Over the World

UNIX spread everywhere — Sun, SGI, HP, IBM, DEC, Cray — and Make went with it.

But all those platforms were different.

  • Different compilers
  • Different flags
  • Different header locations
  • Different libraries
  • Different architectures

Yet Make was the one common denominator.

How was portable software even possible?

Because Makefiles focused on orchestration, not detection.
They didn’t try to figure out if your system used GCC, SunPro, HP-UX cc, or IBM xlC.

Instead, developers manually wrote sections like:

CC = gcc        # or cc or clang or xlc
CFLAGS = -O2    # or -fast or -qarch=ppc

It worked — but portability became a nightmare when projects grew.

3. Enter `configure` and the GNU Autotools

By the early 1990s, developers were drowning in platform differences. “Just edit the Makefile” no longer worked when software had to compile on SunOS, HP-UX, AIX, IRIX, early Linux, and a dozen other UNIX variants.

The GNU project responded with what became known as Autotools — a family of build-system generators designed to make UNIX software portable without requiring users to edit anything manually.

The core components were:

  • Autoconf — originally by David MacKenzie (later expanded by the broader GNU team)
  • Automake — created by Tom Tromey and Ian Lance Taylor
  • Libtool — created by Gordon Matzigkeit

Together they answered the fundamental question:

How can one source tree be built reliably on dozens of incompatible UNIX systems?

3.1 Autoconf — the origin of the configure script

Autoconf takes a template file (configure.ac) and generates the famous ./configure script. Instead of asking “Are we on Solaris?”, it performs feature tests:

  • Does the compiler support inline?
  • Is <unistd.h> available?
  • Do we need to link with -lm?
  • Is fork() implemented?
  • What is the correct shared-library suffix?

Autoconf popularized the idea that build portability should come from detecting capabilities, not OS names.

Maintainer workflow

  1. Write configure.ac describing what to test and what Makefile templates to produce.
  2. Run autoconf (or autoreconf) → generates a portable shell script named configure.

User workflow

./configure        # probes system and generates Makefiles
make               # builds with system-specific flags
make install       # installs

This portable pattern became the universal UNIX build formula.

3.2 Automake — generate portable Makefile templates

Maintainers write a high-level file called Makefile.am, describing targets and installation rules in a clean declarative style, for example:

bin_PROGRAMS = foo
foo_SOURCES  = main.c util.c

Automake then produces a lower-level Makefile.in, which configure processes into a final Makefile.

Automake provided:

  • A standard set of build targets (install, uninstall, dist, check, etc.)
  • Portability glue for different flavors of make
  • Less duplication — Automake emits the complicated rules automatically

It basically stabilized what a UNIX project’s Makefile “should” look like.

3.3 Libtool — solving the shared-library nightmare

Before Libtool, building shared libraries was completely inconsistent between platforms:

  • Different file extensions (.so, .sl, .a, .dylib)
  • Different linker flags
  • Different rules for symbol exports
  • Inconsistent handling of rpaths and versioning

Libtool abstracts all that behind a unified interface. You build a “libsomething” using Libtool commands and Libtool takes care of:

  • Compiler and linker flags
  • Platform-correct filenames
  • Static vs shared builds
  • Symbolic links
  • Version numbering

This was essential for portable C libraries.

3.4 What Autotools solved — and what it created

Solved

  • Real portability across 20+ UNIX variants
  • Automatic generation of system-specific Makefiles
  • A predictable build interface (./configure && make && make install)
  • Stable shared-library rules
  • Feature detection that didn’t rely on OS version hacks

Created

  • Extremely large, often opaque configure scripts
  • A steep learning curve for maintainers (M4 macros, Automake syntax, Libtool conventions)
  • Difficult debugging when Autotools went wrong
  • Sometimes slow configuration times

Despite these flaws, Autotools became the standard that made cross-UNIX open-source possible in the 1990s and 2000s.

If you want more details about Autoconf, please read https://blogg.fsh.se/2025/11/22/why-autoconf-exists-why-configure-cant-do-its-job-alone/

4. The 2000s: The Great Build System Revolt

By 2000–2010, Make and Autotools showed their age.

Teams wanted:

  • Native Windows support
  • IDE integrations
  • Detecting features without shell scripting
  • Parallel builds
  • Faster builds
  • Toolchain-agnostic workflows
  • Dependencies beyond timestamps

This triggered a wave of “Make replacements”.

5. Why CMake Was Invented (and Why It Causes Headaches)

KDE developers were drowning in Autotools complexity and needed something:

  • Cross-platform
  • GUI-friendly
  • IDE-friendly
  • Scriptable
  • Able to generate Visual Studio projects
  • Non-POSIX
  • Faster to configure

So CMake took a bold approach:

Instead of replacing Make, generate Makefiles for every platform.
(And Visual Studio projects. And Ninja files. And Xcode. And more.)

This decision made CMake wildly popular — and wildly confusing.

Why do developers struggle with CMake?

1. It uses its own DSL

Not Python. Not Lua. Not Shell.
A brand new language with unusual syntax:

set(MY_FLAG ON)
target_link_libraries(app PRIVATE m)

It feels like a hybrid of Tcl, Make, and brainteasers.

2. Two-phase evaluation

CMake has:

  • configure time
  • build generation time

Variables behave differently across phases, causing endless confusion.

3. It grew in features faster than the language evolved

Modern CMake encourages target-based rules:

target_include_directories(app PUBLIC include)

But many tutorials still teach the old, global, messy style — leading to brittle builds.

4. CMake tries to be universal

And universality means complexity.

What CMake actually solved

  • True cross-platform builds (Windows, macOS, Linux, embedded)
  • IDE integration
  • Out-of-source builds
  • Better dependency tracking
  • Toolchain flexibility
  • Ability to generate Ninja files for huge speedups

CMake is powerful — but you pay with learning curve and syntax pain.

6. Ninja, SCons, Bazel, Buck, Meson & Friends

Different successors solved different pain points:

Ninja

  • Super small
  • Super fast
  • No logic — final build executor only
  • Usually generated by CMake or Meson

Meson

A cleaner, modern alternative to CMake:

  • Uses a Python-like syntax
  • Generates Ninja build files
  • Very fast

Bazel / Buck

Industrial-scale build systems with:

  • Distributed caching
  • Hermetic builds
  • Explicit dependency graphs
  • Extremely fast incremental builds

They solve Google’s and Meta’s problems — not yours.

7. Why Makefiles Still Matter Today

Despite all the modern tools, Make is still everywhere.

Because Make is:

  • Universal — Installed on every POSIX system
  • Lightweight — No compiler-like setup
  • Easy to embed — You can automate anything
  • Perfect for small–medium projects
  • Transparent — One file, one set of rules
  • CI/CD-friendly — Simple scripting
  • Great glue — For tooling orchestration

Practical Reasons to Learn Make in 2025

1. It’s the fastest way to automate command-line workflows

You can automate Python, Rust, Docker, SQL migrations, testing — anything.

2. It teaches dependency graph thinking

Every modern build tool uses Make’s mental model.

3. It’s still the foundation of the Linux and BSD ecosystem

Most open-source libraries still ship Makefiles.

4. It’s the best zero-dependency tool for small tooling

Writing a Makefile is often faster than writing a shell script.

5. CI pipelines love Make

Just run:

make test
make build
make deploy

Done.

6. Understanding Make helps you understand CMake, Meson, Buck, Ninja

They all build on Make’s core ideas:

  • Targets
  • Dependencies
  • Commands

Once you understand Make, everything else makes sense.

8. What Make Did Wrong — and Why It Survives Anyway

Weaknesses

  • Tabs are sacred, spaces are heresy
  • Cryptic debugging
  • No built-in cross-platform abstraction
  • No modern language features
  • Slow dependency detection on huge codebases
  • Timestamp-based rebuild logic is fragile

Strengths

  • Simple model
  • Predictable behavior
  • Tool-agnostic
  • Works practically anywhere
  • Not tied to any compiler or language
  • Forever stable — no breaking changes in decades

Make is like the wheel: imperfect… but unbeatable in its simplicity.

9. The Legacy of Make

Make introduced ideas that define modern software engineering:

  • Declarative build rules
  • Dependency-driven execution
  • Incremental compilation
  • Distributed building via DAGs
  • Reproducible automation

Everything from Cargo to Webpack to Bazel owes it a debt.

Make isn’t just old — it’s foundational.

Final Word

Many tools have tried to replace Make.

All of them improved something.
All of them introduced new problems.
None of them killed Make.

And the reason is simple:

Make is small, elegant, portable, dependency-free, and teaches timeless concepts.

It is the “Latin” of build systems — ancient, but still shaping modern languages.

If you learn Make today, you are learning the grammar that every other build system secretly speaks.

0
Development

Leave a Reply

Your email address will not be published. Required fields are marked *

This site uses Akismet to reduce spam. Learn how your comment data is processed.