PR modula2/111530: Build failure on BSD due to getopt_long_only GNU extension dependency

This patch uses the libiberty getopt long functions (wrapped up inside
libgm2/libm2pim/cgetopt.cc) and only enables this implementation if
libgm2/configure.ac detects no getopt_long and friends on the target.

gcc/m2/ChangeLog:

	PR modula2/111530
	* gm2-libs-ch/cgetopt.c (cgetopt_cgetopt_long): Re-format.
	(cgetopt_cgetopt_long_only): Re-format.
	(cgetopt_SetOption):  Re-format and assign flag to NULL
	if name is also NULL.
	* gm2-libs/GetOpt.def (AddLongOption): Add index parameter
	and change flag to be a VAR parameter rather than a pointer.
	(GetOptLong): Re-format.
	(GetOpt): Correct comment.
	* gm2-libs/GetOpt.mod: Re-write to rely on cgetopt rather
	than implement long option creation in GetOpt.
	* gm2-libs/cgetopt.def (SetOption): has_arg type is INTEGER.

libgm2/ChangeLog:

	PR modula2/111530
	* Makefile.in: Regenerate.
	* aclocal.m4: Regenerate.
	* config.h.in: Regenerate.
	* configure: Regenerate.
	* configure.ac (AC_CHECK_HEADERS): Include getopt.h.
	(GM2_CHECK_LIB): getopt_long check.
	(GM2_CHECK_LIB): getopt_long_only check.
	* libm2cor/Makefile.in: Regenerate.
	* libm2iso/Makefile.in: Regenerate.
	* libm2log/Makefile.in: Regenerate.
	* libm2min/Makefile.in: Regenerate.
	* libm2pim/Makefile.in: Regenerate.
	* libm2pim/cgetopt.cc: Re-write using conditional on configure
	and long function code from libiberty/getopt.c.

gcc/testsuite/ChangeLog:

	PR modula2/111530
	* gm2/pimlib/run/pass/testgetopt.mod: New test.

Signed-off-by: Gaius Mulley <gaiusmod2@gmail.com>

1 files changed, 142 insertions, 5 deletions

diff --git a/libgm2/configure b/libgm2/configure
index d55a7f4..a0ad71e 100755
--- a/libgm2/configure
+++ b/libgm2/configure
@@ -4950,8 +4950,8 @@ fi
 
 
 
-for ac_header in limits.h stddef.h string.h strings.h stdlib.h \
-                 time.h \
+for ac_header in getopt.h limits.h stddef.h string.h strings.h \
+                 stdlib.h time.h \
 		 fcntl.h unistd.h sys/file.h sys/time.h sys/mman.h \
 		 sys/resource.h sys/param.h sys/times.h sys/stat.h \
                  sys/socket.h \
@@ -4973,7 +4973,6 @@ done
 
 
 
-
  case ${build_alias} in
   "") build_noncanonical=${build} ;;
   *) build_noncanonical=${build_alias} ;;
@@ -12789,7 +12788,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<_LT_EOF
-#line 12792 "configure"
+#line 12791 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -12895,7 +12894,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<_LT_EOF
-#line 12898 "configure"
+#line 12897 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -18061,6 +18060,144 @@ $as_echo "#define HAVE_GETGID 1" >>confdefs.h
   fi
 
 
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking m2 front end checking c library for getopt_long" >&5
+$as_echo_n "checking m2 front end checking c library for getopt_long... " >&6; }
+  if test x$gcc_no_link != xyes; then
+    { $as_echo "$as_me:${as_lineno-$LINENO}: checking for getopt_long in -lc" >&5
+$as_echo_n "checking for getopt_long in -lc... " >&6; }
+if ${ac_cv_lib_c_getopt_long+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-lc  $LIBS"
+if test x$gcc_no_link = xyes; then
+  as_fn_error $? "Link tests are not allowed after GCC_NO_EXECUTABLES." "$LINENO" 5
+fi
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+/* Override any GCC internal prototype to avoid an error.
+   Use char because int might match the return type of a GCC
+   builtin and then its argument prototype would still apply.  */
+#ifdef __cplusplus
+extern "C"
+#endif
+char getopt_long ();
+int
+main ()
+{
+return getopt_long ();
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+  ac_cv_lib_c_getopt_long=yes
+else
+  ac_cv_lib_c_getopt_long=no
+fi
+rm -f core conftest.err conftest.$ac_objext \
+    conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_c_getopt_long" >&5
+$as_echo "$ac_cv_lib_c_getopt_long" >&6; }
+if test "x$ac_cv_lib_c_getopt_long" = xyes; then :
+
+$as_echo "#define HAVE_GETOPT_LONG 1" >>confdefs.h
+
+else
+
+  $as_echo "#undef HAVE_GETOPT_LONG" >>confdefs.h
+
+fi
+
+  else
+    if test "x$ac_cv_lib_c_getopt_long" = xyes; then
+
+$as_echo "#define HAVE_GETOPT_LONG 1" >>confdefs.h
+
+    elif test "x$ac_cv_func_getopt_long" = xyes; then
+
+$as_echo "#define HAVE_GETOPT_LONG 1" >>confdefs.h
+
+    else
+
+  $as_echo "#undef HAVE_GETOPT_LONG" >>confdefs.h
+
+    fi
+  fi
+
+
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking m2 front end checking c library for getopt_long_only" >&5
+$as_echo_n "checking m2 front end checking c library for getopt_long_only... " >&6; }
+  if test x$gcc_no_link != xyes; then
+    { $as_echo "$as_me:${as_lineno-$LINENO}: checking for getopt_long_only in -lc" >&5
+$as_echo_n "checking for getopt_long_only in -lc... " >&6; }
+if ${ac_cv_lib_c_getopt_long_only+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-lc  $LIBS"
+if test x$gcc_no_link = xyes; then
+  as_fn_error $? "Link tests are not allowed after GCC_NO_EXECUTABLES." "$LINENO" 5
+fi
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+/* Override any GCC internal prototype to avoid an error.
+   Use char because int might match the return type of a GCC
+   builtin and then its argument prototype would still apply.  */
+#ifdef __cplusplus
+extern "C"
+#endif
+char getopt_long_only ();
+int
+main ()
+{
+return getopt_long_only ();
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+  ac_cv_lib_c_getopt_long_only=yes
+else
+  ac_cv_lib_c_getopt_long_only=no
+fi
+rm -f core conftest.err conftest.$ac_objext \
+    conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_c_getopt_long_only" >&5
+$as_echo "$ac_cv_lib_c_getopt_long_only" >&6; }
+if test "x$ac_cv_lib_c_getopt_long_only" = xyes; then :
+
+$as_echo "#define HAVE_GETOPT_LONG_ONLY 1" >>confdefs.h
+
+else
+
+  $as_echo "#undef HAVE_GETOPT_LONG_ONLY" >>confdefs.h
+
+fi
+
+  else
+    if test "x$ac_cv_lib_c_getopt_long_only" = xyes; then
+
+$as_echo "#define HAVE_GETOPT_LONG_ONLY 1" >>confdefs.h
+
+    elif test "x$ac_cv_func_getopt_long_only" = xyes; then
+
+$as_echo "#define HAVE_GETOPT_LONG_ONLY 1" >>confdefs.h
+
+    else
+
+  $as_echo "#undef HAVE_GETOPT_LONG_ONLY" >>confdefs.h
+
+    fi
+  fi
+
+
   { $as_echo "$as_me:${as_lineno-$LINENO}: checking m2 front end checking c library for getpid" >&5
 $as_echo_n "checking m2 front end checking c library for getpid... " >&6; }
   if test x$gcc_no_link != xyes; then