libphobos: Remove --enable-unix configure option.

This option is not useful on its own as all posix modules require the
compiler to predefine version(Posix) anyway.  So the option has been
removed, and logic moved into DRUNTIME_OS_SOURCES, where the conditional
DRUNTIME_OS_POSIX is set instead.

libphobos/ChangeLog:

	* configure: Regenerate.
	* configure.ac: Remove DRUNTIME_OS_UNIX.
	* libdruntime/Makefile.am: Add DRUNTIME_DSOURCES_POSIX if
	DRUNTIME_OS_POSIX is true.
	* libdruntime/Makefile.in: Regenerate.
	* m4/druntime/os.m4 (DRUNTIME_OS_UNIX): Remove, move AM_CONDITIONAL
	logic to...
	(DRUNTIME_OS_SOURCES): ...here.  Rename conditional to
	DRUNTIME_OS_POSIX.

6 files changed, 47 insertions, 62 deletions

diff --git a/libphobos/ChangeLog b/libphobos/ChangeLog
index a67f2283533..216cd61baf1 100644
--- a/libphobos/ChangeLog
+++ b/libphobos/ChangeLog
@@ -1,5 +1,17 @@
 2020-04-08  Iain Buclaw  <ibuclaw@gdcproject.org>
 
+	* configure: Regenerate.
+	* configure.ac: Remove DRUNTIME_OS_UNIX.
+	* libdruntime/Makefile.am: Add DRUNTIME_DSOURCES_POSIX if
+	DRUNTIME_OS_POSIX is true.
+	* libdruntime/Makefile.in: Regenerate.
+	* m4/druntime/os.m4 (DRUNTIME_OS_UNIX): Remove, move AM_CONDITIONAL
+	logic to...
+	(DRUNTIME_OS_SOURCES): ...here.  Rename conditional to
+	DRUNTIME_OS_POSIX.
+
+2020-04-08  Iain Buclaw  <ibuclaw@gdcproject.org>
+
 	* Makefile.in: Regenerate.
 	* configure: Regenerate.
 	* configure.ac: Substite WARN_DFLAGS independently of GDCFLAGS.
diff --git a/libphobos/configure b/libphobos/configure
index 65e32d88f45..108518d86aa 100755
--- a/libphobos/configure
+++ b/libphobos/configure
@@ -662,6 +662,8 @@ DRUNTIME_OS_ARM_EABI_UNWINDER_FALSE
 DRUNTIME_OS_ARM_EABI_UNWINDER_TRUE
 DCFG_ARM_EABI_UNWINDER
 DCFG_THREAD_MODEL
+DRUNTIME_OS_POSIX_FALSE
+DRUNTIME_OS_POSIX_TRUE
 DRUNTIME_OS_SOLARIS_FALSE
 DRUNTIME_OS_SOLARIS_TRUE
 DRUNTIME_OS_MINGW_FALSE
@@ -682,8 +684,6 @@ DRUNTIME_OS_ANDROID_FALSE
 DRUNTIME_OS_ANDROID_TRUE
 DRUNTIME_OS_AIX_FALSE
 DRUNTIME_OS_AIX_TRUE
-DRUNTIME_OS_UNIX_FALSE
-DRUNTIME_OS_UNIX_TRUE
 DRUNTIME_CPU_S390_FALSE
 DRUNTIME_CPU_S390_TRUE
 DRUNTIME_CPU_SYSTEMZ_FALSE
@@ -835,7 +835,6 @@ enable_libtool_lock
 with_gcc_major_version_only
 enable_werror
 enable_druntime_gc
-enable_unix
 enable_thread_lib
 with_libatomic
 with_libbacktrace
@@ -1486,8 +1485,6 @@ Optional Features:
   --disable-libtool-lock  avoid locking (might break parallel builds)
   --enable-werror         turns on -Werror [default=no]
   --enable-druntime-gc    enable D runtime garbage collector (default: yes)
-  --enable-unix           enables Unix runtime (default: yes, for Unix
-                          targets)
   --enable-thread-lib=<arg>
                           specify linker option for the system thread library
                           (default: autodetect)
@@ -11649,7 +11646,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<_LT_EOF
-#line 11652 "configure"
+#line 11649 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -11755,7 +11752,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<_LT_EOF
-#line 11758 "configure"
+#line 11755 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -14105,31 +14102,6 @@ fi
 
 
 
-  # Check whether --enable-unix was given.
-if test "${enable_unix+set}" = set; then :
-  enableval=$enable_unix; :
-else
-  enable_unix=auto
-fi
-
-
-  case "$druntime_cv_target_os" in
-    aix*|*bsd*|cygwin*|darwin*|gnu*|linux*|skyos*|*solaris*|sysv*) d_have_unix=1 ;;
-  esac
-  if test -n "$d_have_unix" && test "$enable_unix" = auto ; then
-    enable_unix=yes
-  fi
-   if test "$enable_unix" = "yes"; then
-  DRUNTIME_OS_UNIX_TRUE=
-  DRUNTIME_OS_UNIX_FALSE='#'
-else
-  DRUNTIME_OS_UNIX_TRUE='#'
-  DRUNTIME_OS_UNIX_FALSE=
-fi
-
-
-
-
 
   druntime_target_os_parsed=""
   case "$druntime_cv_target_os" in
@@ -14239,6 +14211,21 @@ else
 fi
 
 
+  druntime_target_posix="no"
+  case "$druntime_cv_target_os" in
+    aix*|*bsd*|cygwin*|darwin*|gnu*|linux*|skyos*|*solaris*|sysv*)
+      druntime_target_posix="yes"
+      ;;
+  esac
+   if test "$druntime_target_posix" = "yes"; then
+  DRUNTIME_OS_POSIX_TRUE=
+  DRUNTIME_OS_POSIX_FALSE='#'
+else
+  DRUNTIME_OS_POSIX_TRUE='#'
+  DRUNTIME_OS_POSIX_FALSE=
+fi
+
+
 
 
   { $as_echo "$as_me:${as_lineno-$LINENO}: checking for thread model used by GDC" >&5
@@ -15599,10 +15586,6 @@ if test -z "${DRUNTIME_CPU_S390_TRUE}" && test -z "${DRUNTIME_CPU_S390_FALSE}";
   as_fn_error $? "conditional \"DRUNTIME_CPU_S390\" was never defined.
 Usually this means the macro was only invoked conditionally." "$LINENO" 5
 fi
-if test -z "${DRUNTIME_OS_UNIX_TRUE}" && test -z "${DRUNTIME_OS_UNIX_FALSE}"; then
-  as_fn_error $? "conditional \"DRUNTIME_OS_UNIX\" was never defined.
-Usually this means the macro was only invoked conditionally." "$LINENO" 5
-fi
 if test -z "${DRUNTIME_OS_AIX_TRUE}" && test -z "${DRUNTIME_OS_AIX_FALSE}"; then
   as_fn_error $? "conditional \"DRUNTIME_OS_AIX\" was never defined.
 Usually this means the macro was only invoked conditionally." "$LINENO" 5
@@ -15643,6 +15626,10 @@ if test -z "${DRUNTIME_OS_SOLARIS_TRUE}" && test -z "${DRUNTIME_OS_SOLARIS_FALSE
   as_fn_error $? "conditional \"DRUNTIME_OS_SOLARIS\" was never defined.
 Usually this means the macro was only invoked conditionally." "$LINENO" 5
 fi
+if test -z "${DRUNTIME_OS_POSIX_TRUE}" && test -z "${DRUNTIME_OS_POSIX_FALSE}"; then
+  as_fn_error $? "conditional \"DRUNTIME_OS_POSIX\" was never defined.
+Usually this means the macro was only invoked conditionally." "$LINENO" 5
+fi
 if test -z "${DRUNTIME_OS_ARM_EABI_UNWINDER_TRUE}" && test -z "${DRUNTIME_OS_ARM_EABI_UNWINDER_FALSE}"; then
   as_fn_error $? "conditional \"DRUNTIME_OS_ARM_EABI_UNWINDER\" was never defined.
 Usually this means the macro was only invoked conditionally." "$LINENO" 5
diff --git a/libphobos/configure.ac b/libphobos/configure.ac
index 09e334d2045..594d2001b06 100644
--- a/libphobos/configure.ac
+++ b/libphobos/configure.ac
@@ -122,7 +122,6 @@ DRUNTIME_MULTILIB
 DRUNTIME_WERROR
 DRUNTIME_GC
 DRUNTIME_CPU_SOURCES
-DRUNTIME_OS_UNIX
 DRUNTIME_OS_SOURCES
 DRUNTIME_OS_THREAD_MODEL
 DRUNTIME_OS_ARM_EABI_UNWINDER
diff --git a/libphobos/libdruntime/Makefile.am b/libphobos/libdruntime/Makefile.am
index b7e4575e0f1..41ccfaa339c 100644
--- a/libphobos/libdruntime/Makefile.am
+++ b/libphobos/libdruntime/Makefile.am
@@ -47,7 +47,7 @@ else
     DRUNTIME_SOURCES_CONFIGURED += $(DRUNTIME_DSOURCES_GCSTUB)
 endif
 # OS specific sources
-if DRUNTIME_OS_UNIX
+if DRUNTIME_OS_POSIX
     DRUNTIME_SOURCES_CONFIGURED += $(DRUNTIME_DSOURCES_POSIX)
 endif
 if DRUNTIME_OS_DARWIN
diff --git a/libphobos/libdruntime/Makefile.in b/libphobos/libdruntime/Makefile.in
index 61dd0d496e3..9277e0a1665 100644
--- a/libphobos/libdruntime/Makefile.in
+++ b/libphobos/libdruntime/Makefile.in
@@ -112,7 +112,7 @@ target_triplet = @target@
 @DRUNTIME_GC_ENABLE_TRUE@am__append_1 = $(DRUNTIME_DSOURCES_GC)
 @DRUNTIME_GC_ENABLE_FALSE@am__append_2 = $(DRUNTIME_DSOURCES_GCSTUB)
 # OS specific sources
-@DRUNTIME_OS_UNIX_TRUE@am__append_3 = $(DRUNTIME_DSOURCES_POSIX)
+@DRUNTIME_OS_POSIX_TRUE@am__append_3 = $(DRUNTIME_DSOURCES_POSIX)
 @DRUNTIME_OS_DARWIN_TRUE@am__append_4 = $(DRUNTIME_DSOURCES_DARWIN)
 @DRUNTIME_OS_DRAGONFLYBSD_TRUE@am__append_5 = $(DRUNTIME_DSOURCES_DRAGONFLYBSD)
 @DRUNTIME_OS_ANDROID_TRUE@am__append_6 = $(DRUNTIME_DSOURCES_BIONIC)
@@ -272,7 +272,7 @@ am__objects_7 = core/sys/posix/aio.lo core/sys/posix/arpa/inet.lo \
 	core/sys/posix/syslog.lo core/sys/posix/termios.lo \
 	core/sys/posix/time.lo core/sys/posix/ucontext.lo \
 	core/sys/posix/unistd.lo core/sys/posix/utime.lo
-@DRUNTIME_OS_UNIX_TRUE@am__objects_8 = $(am__objects_7)
+@DRUNTIME_OS_POSIX_TRUE@am__objects_8 = $(am__objects_7)
 am__objects_9 = core/sys/darwin/crt_externs.lo \
 	core/sys/darwin/dlfcn.lo core/sys/darwin/execinfo.lo \
 	core/sys/darwin/mach/dyld.lo core/sys/darwin/mach/getsect.lo \
diff --git a/libphobos/m4/druntime/os.m4 b/libphobos/m4/druntime/os.m4
index 74167aa2cde..47d4c6a6c80 100644
--- a/libphobos/m4/druntime/os.m4
+++ b/libphobos/m4/druntime/os.m4
@@ -52,33 +52,12 @@ AC_DEFUN([DRUNTIME_OS_DETECT],
 ])
 
 
-# DRUNTIME_OS_UNIX
-# ----------------
-# Add --enable-unix option or autodetects if system is unix
-# and create the DRUNTIME_OS_UNIX conditional.
-AC_DEFUN([DRUNTIME_OS_UNIX],
-[
-  AC_REQUIRE([DRUNTIME_OS_DETECT])
-  AC_ARG_ENABLE(unix,
-    AC_HELP_STRING([--enable-unix],
-                   [enables Unix runtime (default: yes, for Unix targets)]),
-    :,[enable_unix=auto])
-
-  case "$druntime_cv_target_os" in
-    aix*|*bsd*|cygwin*|darwin*|gnu*|linux*|skyos*|*solaris*|sysv*) d_have_unix=1 ;;
-  esac
-  if test -n "$d_have_unix" && test "$enable_unix" = auto ; then
-    enable_unix=yes
-  fi
-  AM_CONDITIONAL([DRUNTIME_OS_UNIX], [test "$enable_unix" = "yes"])
-])
-
-
 # DRUNTIME_OS_SOURCES
 # -------------------
 # Detect target OS and add DRUNTIME_OS_AIX DRUNTIME_OS_DARWIN
 # DRUNTIME_OS_FREEBSD DRUNTIME_OS_LINUX DRUNTIME_OS_MINGW
 # DRUNTIME_OS_SOLARIS DRUNTIME_OS_OPENBSD conditionals.
+# If the system is posix, add DRUNTIME_OS_POSIX conditional.
 AC_DEFUN([DRUNTIME_OS_SOURCES],
 [
   AC_REQUIRE([DRUNTIME_OS_DETECT])
@@ -130,6 +109,14 @@ AC_DEFUN([DRUNTIME_OS_SOURCES],
                  [test "$druntime_target_os_parsed" = "mingw"])
   AM_CONDITIONAL([DRUNTIME_OS_SOLARIS],
                  [test "$druntime_target_os_parsed" = "solaris"])
+
+  druntime_target_posix="no"
+  case "$druntime_cv_target_os" in
+    aix*|*bsd*|cygwin*|darwin*|gnu*|linux*|skyos*|*solaris*|sysv*)
+      druntime_target_posix="yes"
+      ;;
+  esac
+  AM_CONDITIONAL([DRUNTIME_OS_POSIX], [test "$druntime_target_posix" = "yes"])
 ])