Replace autotools with meson

To introduce much simpler build configuration which is also easier to
maintain.

src/Makefile.am

@@ -1,24 +0,0 @@
-AM_CPPFLAGS = -I$(srcdir)/include
-AM_CFLAGS = -Wall
-bin_PROGRAMS = tio
-tio_SOURCES = tty.c \
-              options.c \
-              time.c \
-              main.c \
-              log.c \
-              error.c \
-              include/tio/tty.h \
-              include/tio/options.h \
-              include/tio/time.h \
-              include/tio/print.h \
-              include/tio/log.h \
-              include/tio/error.h
-
-if ADD_SETSPEED2
-tio_SOURCES += setspeed2.c
-endif
-
-if ENABLE_BASH_COMPLETION
-bashcompletiondir=@BASH_COMPLETION_DIR@
-bashcompletion_DATA=bash-completion/tio
-endif

src/bash-completion/meson.build

@@ -0,0 +1,19 @@
+conf = configuration_data()
+conf.set('baudrates', baudrates)
+
+completion_file = configure_file( input: files('tio.in'),
+                                  output: 'tio',
+                                  configuration: conf,
+                                )
+
+bashcompletiondir = get_option('bashcompletiondir')
+if bashcompletiondir == ''
+  bash_completion_dep = dependency('bash-completion', required: false)
+  if bash_completion_dep.found()
+    bashcompletiondir = join_paths(get_option('datadir'), 'bash-completion', 'completions')
+  endif
+endif
+
+if (bashcompletiondir != 'no') and (bashcompletiondir != '')
+  install_data(completion_file, install_dir: bashcompletiondir)
+endif

src/bash-completion/tio.in

@@ -27,7 +27,7 @@ _tio()
     #  Complete the arguments to the options.
     case "${prev}" in
         -b | --baudrate)
-            local baudrates="@BAUDRATES@"
+            local baudrates="@baudrates@"
             COMPREPLY=( $(compgen -W "$baudrates" -- ${cur}) )
             return 0
             ;;

src/error.c

@@ -24,9 +24,9 @@
 #include <stdlib.h>
 #include <string.h>
 #include <errno.h>
-#include "tio/options.h"
-#include "tio/print.h"
-#include "tio/error.h"
+#include "options.h"
+#include "print.h"
+#include "error.h"
 
 char error[2][1000];
 

src/log.c

@@ -24,9 +24,9 @@
 #include <stdlib.h>
 #include <string.h>
 #include <errno.h>
-#include "tio/options.h"
-#include "tio/print.h"
-#include "tio/error.h"
+#include "options.h"
+#include "print.h"
+#include "error.h"
 
 static FILE *fp;
 static bool log_error = false;

src/main.c

@@ -23,11 +23,11 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <unistd.h>
-#include "tio/options.h"
-#include "tio/tty.h"
-#include "tio/log.h"
-#include "tio/error.h"
-#include "tio/print.h"
+#include "options.h"
+#include "tty.h"
+#include "log.h"
+#include "error.h"
+#include "print.h"
 
 int main(int argc, char *argv[])
 {

src/meson.build

@@ -0,0 +1,24 @@
+config_h = configuration_data()
+config_h.set_quoted('VERSION', meson.project_version())
+config_h.set('BAUDRATE_CASES', baudrate_cases)
+configure_file(output: 'config.h', configuration: config_h)
+
+tio_sources = [
+  'error.c',
+  'log.c',
+  'main.c',
+  'options.c',
+  'misc.c',
+  'tty.c'
+  ]
+
+if tcgets2 != ''
+  tio_sources += 'setspeed2.c'
+endif
+
+executable('tio',
+  tio_sources,
+  install: true,
+)
+
+subdir('bash-completion')

src/misc.c

@@ -25,8 +25,8 @@
 #include <string.h>
 #include <time.h>
 #include <sys/time.h>
-#include "tio/error.h"
-#include "tio/print.h"
+#include "error.h"
+#include "print.h"
 
 // "YYYY-MM-DDThh:mm:ss.sss" (ISO-8601 format).
 #define TIME_STRING_SIZE 24
@@ -51,7 +51,7 @@ char * current_time(void)
         len = snprintf(time_string + len, TIME_STRING_SIZE - len, ".%03ld", (long)tv.tv_usec / 1000);
     }
 
-    return (len >= 0) && (len < TIME_STRING_SIZE) ? time_string : NULL;
+    return (len < TIME_STRING_SIZE) ? time_string : NULL;
 }
 
 void delay(long ms)

src/misc.h

@@ -19,10 +19,7 @@
  * 02110-1301, USA.
  */
 
-#ifndef TIME_H
-#define TIME_H
+#pragma once
 
 char * current_time(void);
 void delay(long ms);
-
-#endif

src/options.c

@@ -30,8 +30,8 @@
 #include <getopt.h>
 #include <termios.h>
 #include <limits.h>
-#include "tio/options.h"
-#include "tio/error.h"
+#include "options.h"
+#include "error.h"
 
 /* Default options */
 struct option_t option =

src/tty.c

@@ -38,12 +38,12 @@
 #include <time.h>
 #include <dirent.h>
 #include "config.h"
-#include "tio/tty.h"
-#include "tio/print.h"
-#include "tio/options.h"
-#include "tio/time.h"
-#include "tio/log.h"
-#include "tio/error.h"
+#include "tty.h"
+#include "print.h"
+#include "options.h"
+#include "misc.h"
+#include "log.h"
+#include "error.h"
 
 #ifdef HAVE_TERMIOS2
 extern int setspeed2(int fd, int baudrate);
@@ -364,9 +364,9 @@ void tty_configure(void)
          * Only switch cases for baud rates detected supported by the host
          * system are inserted.
          *
-         * To see which baud rates are being probed see configure.ac
+         * To see which baud rates are being probed see meson.build
          */
-        AUTOCONF_BAUDRATE_CASES
+        BAUDRATE_CASES
 
         default:
 #ifdef HAVE_TERMIOS2