build: add inital autotools setup

Makefile.am

@@ -0,0 +1,15 @@
+NULL =
+# Program and sources
+bin_PROGRAMS = jitters
+jitters_SOURCES = \
+    src/jitters.c \
+    $(NULL)
+
+# Add warnings
+jitters_CFLAGS = $(WARN_CFLAGS)
+jitters_LDFLAGS = $(WARN_LDFLAGS)
+
+# Extra files to include in 'make dist'
+EXTRA_DIST = \
+    bootstrap \
+    $(NULL)

bootstrap

@@ -0,0 +1,19 @@
+#! /bin/sh
+
+# Stop on errors
+set -e
+
+# Find where the sources are
+src_dir="$(dirname "$0")"
+test -z "$src_dir" && src_dir=.
+
+# Bootstrap in a subshell
+(
+    cd "$src_dir"
+    autoreconf -fvi
+)
+
+# Call configure, unless NOCONFIGURE is set
+if test -z "$NOCONFIGURE"; then
+    "$src_dir"/configure "$@"
+fi

configure.ac

@@ -0,0 +1,35 @@
+# Disallow unexpanded macros
+m4_pattern_forbid([^(AM|AC|AX|LT)_])
+
+# Initialize the project name, version, and maitainer address
+AC_INIT([jitters], [0.1-dev], [bruno@belanyi.fr])
+# Only use C for this project
+AC_LANG([C])
+
+# Auxiliary files
+AC_CONFIG_AUX_DIR([build-aux])
+AC_CONFIG_MACRO_DIR([build-aux/m4])
+
+# Non-recursive Make build system
+AM_INIT_AUTOMAKE([foreign subdir-objects
+                  dist-bzip2 no-dist-gzip
+                  silent-rules
+                  -Wall -Werror])
+# Use silent rules unless `make V=1` is used
+AM_SILENT_RULES([yes])
+AC_CONFIG_SRCDIR([src/jitters.c])
+AC_CONFIG_FILES([Makefile])
+
+# Activate release-mode when there is no dash in version
+AX_IS_RELEASE([dash-version])
+# Build in debug-mode by default, except when in release
+AX_CHECK_ENABLE_DEBUG([yes])
+
+# Standard C99 setup
+AC_PROG_CC_C99
+AC_PROG_CC_STDC
+
+# Warnings
+AX_COMPILER_FLAGS([], [], [], [-Wall -Wextra -pedantic])
+
+AC_OUTPUT

src/jitters.c

@@ -0,0 +1,8 @@
+#include <stdio.h>
+
+int main(void)
+{
+    puts("Hello World!");
+
+    return 0;
+}