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diff --git a/gnulib b/gnulib
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diff --git a/gnulib/lib/csharpcomp.c b/gnulib/lib/csharpcomp.c
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+/* Compile a C# program.
+ Copyright (C) 2003-2011 Free Software Foundation, Inc.
+ Written by Bruno Haible <bruno@clisp.org>, 2003.
+
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
+
+#include <config.h>
+#include <alloca.h>
+
+/* Specification. */
+#include "csharpcomp.h"
+
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "execute.h"
+#include "spawn-pipe.h"
+#include "wait-process.h"
+#include "sh-quote.h"
+#include "safe-read.h"
+#include "xmalloca.h"
+#include "error.h"
+#include "gettext.h"
+
+#define _(str) gettext (str)
+
+
+/* Survey of C# compilers.
+
+ Program from
+
+ cscc pnet
+ mcs mono
+ csc sscli
+
+ We try the CIL interpreters in the following order:
+ 1. "cscc", because it is a completely free system.
+ 2. "mcs", because it is a free system but doesn't integrate so well
+ with Unix. (Command line options start with / instead of -. Errors go
+ to stdout instead of stderr. Source references are printed as
+ "file(lineno)" instead of "file:lineno:".)
+ 3. "csc", although it is not free, because it is a kind of "reference
+ implementation" of C#.
+ But the order can be changed through the --enable-csharp configuration
+ option.
+ */
+
+static int
+compile_csharp_using_pnet (const char * const *sources,
+ unsigned int sources_count,
+ const char * const *libdirs,
+ unsigned int libdirs_count,
+ const char * const *libraries,
+ unsigned int libraries_count,
+ const char *output_file, bool output_is_library,
+ bool optimize, bool debug,
+ bool verbose)
+{
+ static bool cscc_tested;
+ static bool cscc_present;
+
+ if (!cscc_tested)
+ {
+ /* Test for presence of cscc:
+ "cscc --version >/dev/null 2>/dev/null" */
+ char *argv[3];
+ int exitstatus;
+
+ argv[0] = "cscc";
+ argv[1] = "--version";
+ argv[2] = NULL;
+ exitstatus = execute ("cscc", "cscc", argv, false, false, true, true,
+ true, false, NULL);
+ cscc_present = (exitstatus == 0);
+ cscc_tested = true;
+ }
+
+ if (cscc_present)
+ {
+ unsigned int argc;
+ char **argv;
+ char **argp;
+ int exitstatus;
+ unsigned int i;
+
+ argc =
+ 1 + (output_is_library ? 1 : 0) + 2 + 2 * libdirs_count
+ + 2 * libraries_count + (optimize ? 1 : 0) + (debug ? 1 : 0)
+ + sources_count;
+ argv = (char **) xmalloca ((argc + 1) * sizeof (char *));
+
+ argp = argv;
+ *argp++ = "cscc";
+ if (output_is_library)
+ *argp++ = "-shared";
+ *argp++ = "-o";
+ *argp++ = (char *) output_file;
+ for (i = 0; i < libdirs_count; i++)
+ {
+ *argp++ = "-L";
+ *argp++ = (char *) libdirs[i];
+ }
+ for (i = 0; i < libraries_count; i++)
+ {
+ *argp++ = "-l";
+ *argp++ = (char *) libraries[i];
+ }
+ if (optimize)
+ *argp++ = "-O";
+ if (debug)
+ *argp++ = "-g";
+ for (i = 0; i < sources_count; i++)
+ {
+ const char *source_file = sources[i];
+ if (strlen (source_file) >= 10
+ && memcmp (source_file + strlen (source_file) - 10, ".resources",
+ 10) == 0)
+ {
+ char *option = (char *) xmalloca (12 + strlen (source_file) + 1);
+
+ memcpy (option, "-fresources=", 12);
+ strcpy (option + 12, source_file);
+ *argp++ = option;
+ }
+ else
+ *argp++ = (char *) source_file;
+ }
+ *argp = NULL;
+ /* Ensure argv length was correctly calculated. */
+ if (argp - argv != argc)
+ abort ();
+
+ if (verbose)
+ {
+ char *command = shell_quote_argv (argv);
+ printf ("%s\n", command);
+ free (command);
+ }
+
+ exitstatus = execute ("cscc", "cscc", argv, false, false, false, false,
+ true, true, NULL);
+
+ for (i = 0; i < sources_count; i++)
+ if (argv[argc - sources_count + i] != sources[i])
+ freea (argv[argc - sources_count + i]);
+ freea (argv);
+
+ return (exitstatus != 0);
+ }
+ else
+ return -1;
+}
+
+static int
+compile_csharp_using_mono (const char * const *sources,
+ unsigned int sources_count,
+ const char * const *libdirs,
+ unsigned int libdirs_count,
+ const char * const *libraries,
+ unsigned int libraries_count,
+ const char *output_file, bool output_is_library,
+ bool optimize, bool debug,
+ bool verbose)
+{
+ static bool mcs_tested;
+ static bool mcs_present;
+
+ if (!mcs_tested)
+ {
+ /* Test for presence of mcs:
+ "mcs --version >/dev/null 2>/dev/null"
+ and (to exclude an unrelated 'mcs' program on QNX 6)
+ "mcs --version 2>/dev/null | grep Mono >/dev/null" */
+ char *argv[3];
+ pid_t child;
+ int fd[1];
+ int exitstatus;
+
+ argv[0] = "mcs";
+ argv[1] = "--version";
+ argv[2] = NULL;
+ child = create_pipe_in ("mcs", "mcs", argv, DEV_NULL, true, true, false,
+ fd);
+ mcs_present = false;
+ if (child != -1)
+ {
+ /* Read the subprocess output, and test whether it contains the
+ string "Mono". */
+ char c[4];
+ size_t count = 0;
+
+ while (safe_read (fd[0], &c[count], 1) > 0)
+ {
+ count++;
+ if (count == 4)
+ {
+ if (memcmp (c, "Mono", 4) == 0)
+ mcs_present = true;
+ c[0] = c[1]; c[1] = c[2]; c[2] = c[3];
+ count--;
+ }
+ }
+
+ close (fd[0]);
+
+ /* Remove zombie process from process list, and retrieve exit
+ status. */
+ exitstatus =
+ wait_subprocess (child, "mcs", false, true, true, false, NULL);
+ if (exitstatus != 0)
+ mcs_present = false;
+ }
+ mcs_tested = true;
+ }
+
+ if (mcs_present)
+ {
+ unsigned int argc;
+ char **argv;
+ char **argp;
+ pid_t child;
+ int fd[1];
+ FILE *fp;
+ char *line[2];
+ size_t linesize[2];
+ size_t linelen[2];
+ unsigned int l;
+ int exitstatus;
+ unsigned int i;
+
+ argc =
+ 1 + (output_is_library ? 1 : 0) + 1 + libdirs_count + libraries_count
+ + (debug ? 1 : 0) + sources_count;
+ argv = (char **) xmalloca ((argc + 1) * sizeof (char *));
+
+ argp = argv;
+ *argp++ = "mcs";
+ if (output_is_library)
+ *argp++ = "-target:library";
+ {
+ char *option = (char *) xmalloca (5 + strlen (output_file) + 1);
+ memcpy (option, "-out:", 5);
+ strcpy (option + 5, output_file);
+ *argp++ = option;
+ }
+ for (i = 0; i < libdirs_count; i++)
+ {
+ char *option = (char *) xmalloca (5 + strlen (libdirs[i]) + 1);
+ memcpy (option, "-lib:", 5);
+ strcpy (option + 5, libdirs[i]);
+ *argp++ = option;
+ }
+ for (i = 0; i < libraries_count; i++)
+ {
+ char *option = (char *) xmalloca (11 + strlen (libraries[i]) + 4 + 1);
+ memcpy (option, "-reference:", 11);
+ memcpy (option + 11, libraries[i], strlen (libraries[i]));
+ strcpy (option + 11 + strlen (libraries[i]), ".dll");
+ *argp++ = option;
+ }
+ if (debug)
+ *argp++ = "-debug";
+ for (i = 0; i < sources_count; i++)
+ {
+ const char *source_file = sources[i];
+ if (strlen (source_file) >= 10
+ && memcmp (source_file + strlen (source_file) - 10, ".resources",
+ 10) == 0)
+ {
+ char *option = (char *) xmalloca (10 + strlen (source_file) + 1);
+
+ memcpy (option, "-resource:", 10);
+ strcpy (option + 10, source_file);
+ *argp++ = option;
+ }
+ else
+ *argp++ = (char *) source_file;
+ }
+ *argp = NULL;
+ /* Ensure argv length was correctly calculated. */
+ if (argp - argv != argc)
+ abort ();
+
+ if (verbose)
+ {
+ char *command = shell_quote_argv (argv);
+ printf ("%s\n", command);
+ free (command);
+ }
+
+ child = create_pipe_in ("mcs", "mcs", argv, NULL, false, true, true, fd);
+
+ /* Read the subprocess output, copying it to stderr. Drop the last
+ line if it starts with "Compilation succeeded". */
+ fp = fdopen (fd[0], "r");
+ if (fp == NULL)
+ error (EXIT_FAILURE, errno, _("fdopen() failed"));
+ line[0] = NULL; linesize[0] = 0;
+ line[1] = NULL; linesize[1] = 0;
+ l = 0;
+ for (;;)
+ {
+ linelen[l] = getline (&line[l], &linesize[l], fp);
+ if (linelen[l] == (size_t)(-1))
+ break;
+ l = (l + 1) % 2;
+ if (line[l] != NULL)
+ fwrite (line[l], 1, linelen[l], stderr);
+ }
+ l = (l + 1) % 2;
+ if (line[l] != NULL
+ && !(linelen[l] >= 21
+ && memcmp (line[l], "Compilation succeeded", 21) == 0))
+ fwrite (line[l], 1, linelen[l], stderr);
+ if (line[0] != NULL)
+ free (line[0]);
+ if (line[1] != NULL)
+ free (line[1]);
+ fclose (fp);
+
+ /* Remove zombie process from process list, and retrieve exit status. */
+ exitstatus =
+ wait_subprocess (child, "mcs", false, false, true, true, NULL);
+
+ for (i = 1 + (output_is_library ? 1 : 0);
+ i < 1 + (output_is_library ? 1 : 0)
+ + 1 + libdirs_count + libraries_count;
+ i++)
+ freea (argv[i]);
+ for (i = 0; i < sources_count; i++)
+ if (argv[argc - sources_count + i] != sources[i])
+ freea (argv[argc - sources_count + i]);
+ freea (argv);
+
+ return (exitstatus != 0);
+ }
+ else
+ return -1;
+}
+
+static int
+compile_csharp_using_sscli (const char * const *sources,
+ unsigned int sources_count,
+ const char * const *libdirs,
+ unsigned int libdirs_count,
+ const char * const *libraries,
+ unsigned int libraries_count,
+ const char *output_file, bool output_is_library,
+ bool optimize, bool debug,
+ bool verbose)
+{
+ static bool csc_tested;
+ static bool csc_present;
+
+ if (!csc_tested)
+ {
+ /* Test for presence of csc:
+ "csc -help >/dev/null 2>/dev/null \
+ && ! { csc -help 2>/dev/null | grep -i chicken > /dev/null; }" */
+ char *argv[3];
+ pid_t child;
+ int fd[1];
+ int exitstatus;
+
+ argv[0] = "csc";
+ argv[1] = "-help";
+ argv[2] = NULL;
+ child = create_pipe_in ("csc", "csc", argv, DEV_NULL, true, true, false,
+ fd);
+ csc_present = false;
+ if (child != -1)
+ {
+ /* Read the subprocess output, and test whether it contains the
+ string "chicken". */
+ char c[7];
+ size_t count = 0;
+
+ csc_present = true;
+ while (safe_read (fd[0], &c[count], 1) > 0)
+ {
+ if (c[count] >= 'A' && c[count] <= 'Z')
+ c[count] += 'a' - 'A';
+ count++;
+ if (count == 7)
+ {
+ if (memcmp (c, "chicken", 7) == 0)
+ csc_present = false;
+ c[0] = c[1]; c[1] = c[2]; c[2] = c[3];
+ c[3] = c[4]; c[4] = c[5]; c[5] = c[6];
+ count--;
+ }
+ }
+
+ close (fd[0]);
+
+ /* Remove zombie process from process list, and retrieve exit
+ status. */
+ exitstatus =
+ wait_subprocess (child, "csc", false, true, true, false, NULL);
+ if (exitstatus != 0)
+ csc_present = false;
+ }
+ csc_tested = true;
+ }
+
+ if (csc_present)
+ {
+ unsigned int argc;
+ char **argv;
+ char **argp;
+ int exitstatus;
+ unsigned int i;
+
+ argc =
+ 1 + 1 + 1 + libdirs_count + libraries_count
+ + (optimize ? 1 : 0) + (debug ? 1 : 0) + sources_count;
+ argv = (char **) xmalloca ((argc + 1) * sizeof (char *));
+
+ argp = argv;
+ *argp++ = "csc";
+ *argp++ =
+ (char *) (output_is_library ? "-target:library" : "-target:exe");
+ {
+ char *option = (char *) xmalloca (5 + strlen (output_file) + 1);
+ memcpy (option, "-out:", 5);
+ strcpy (option + 5, output_file);
+ *argp++ = option;
+ }
+ for (i = 0; i < libdirs_count; i++)
+ {
+ char *option = (char *) xmalloca (5 + strlen (libdirs[i]) + 1);
+ memcpy (option, "-lib:", 5);
+ strcpy (option + 5, libdirs[i]);
+ *argp++ = option;
+ }
+ for (i = 0; i < libraries_count; i++)
+ {
+ char *option = (char *) xmalloca (11 + strlen (libraries[i]) + 4 + 1);
+ memcpy (option, "-reference:", 11);
+ memcpy (option + 11, libraries[i], strlen (libraries[i]));
+ strcpy (option + 11 + strlen (libraries[i]), ".dll");
+ *argp++ = option;
+ }
+ if (optimize)
+ *argp++ = "-optimize+";
+ if (debug)
+ *argp++ = "-debug+";
+ for (i = 0; i < sources_count; i++)
+ {
+ const char *source_file = sources[i];
+ if (strlen (source_file) >= 10
+ && memcmp (source_file + strlen (source_file) - 10, ".resources",
+ 10) == 0)
+ {
+ char *option = (char *) xmalloca (10 + strlen (source_file) + 1);
+
+ memcpy (option, "-resource:", 10);
+ strcpy (option + 10, source_file);
+ *argp++ = option;
+ }
+ else
+ *argp++ = (char *) source_file;
+ }
+ *argp = NULL;
+ /* Ensure argv length was correctly calculated. */
+ if (argp - argv != argc)
+ abort ();
+
+ if (verbose)
+ {
+ char *command = shell_quote_argv (argv);
+ printf ("%s\n", command);
+ free (command);
+ }
+
+ exitstatus = execute ("csc", "csc", argv, false, false, false, false,
+ true, true, NULL);
+
+ for (i = 2; i < 3 + libdirs_count + libraries_count; i++)
+ freea (argv[i]);
+ for (i = 0; i < sources_count; i++)
+ if (argv[argc - sources_count + i] != sources[i])
+ freea (argv[argc - sources_count + i]);
+ freea (argv);
+
+ return (exitstatus != 0);
+ }
+ else
+ return -1;
+}
+
+bool
+compile_csharp_class (const char * const *sources,
+ unsigned int sources_count,
+ const char * const *libdirs,
+ unsigned int libdirs_count,
+ const char * const *libraries,
+ unsigned int libraries_count,
+ const char *output_file,
+ bool optimize, bool debug,
+ bool verbose)
+{
+ bool output_is_library =
+ (strlen (output_file) >= 4
+ && memcmp (output_file + strlen (output_file) - 4, ".dll", 4) == 0);
+ int result;
+
+ /* First try the C# implementation specified through --enable-csharp. */
+#if CSHARP_CHOICE_PNET
+ result = compile_csharp_using_pnet (sources, sources_count,
+ libdirs, libdirs_count,
+ libraries, libraries_count,
+ output_file, output_is_library,
+ optimize, debug, verbose);
+ if (result >= 0)
+ return (bool) result;
+#endif
+
+#if CSHARP_CHOICE_MONO
+ result = compile_csharp_using_mono (sources, sources_count,
+ libdirs, libdirs_count,
+ libraries, libraries_count,
+ output_file, output_is_library,
+ optimize, debug, verbose);
+ if (result >= 0)
+ return (bool) result;
+#endif
+
+ /* Then try the remaining C# implementations in our standard order. */
+#if !CSHARP_CHOICE_PNET
+ result = compile_csharp_using_pnet (sources, sources_count,
+ libdirs, libdirs_count,
+ libraries, libraries_count,
+ output_file, output_is_library,
+ optimize, debug, verbose);
+ if (result >= 0)
+ return (bool) result;
+#endif
+
+#if !CSHARP_CHOICE_MONO
+ result = compile_csharp_using_mono (sources, sources_count,
+ libdirs, libdirs_count,
+ libraries, libraries_count,
+ output_file, output_is_library,
+ optimize, debug, verbose);
+ if (result >= 0)
+ return (bool) result;
+#endif
+
+ result = compile_csharp_using_sscli (sources, sources_count,
+ libdirs, libdirs_count,
+ libraries, libraries_count,
+ output_file, output_is_library,
+ optimize, debug, verbose);
+ if (result >= 0)
+ return (bool) result;
+
+ error (0, 0, _("C# compiler not found, try installing pnet"));
+ return true;
+}
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