1 files changed, 93 insertions, 0 deletions
diff --git a/extension/configure b/extension/configure
index 6e280de9..0e6dd611 100755
--- a/extension/configure
+++ b/extension/configure
@@ -3660,6 +3660,99 @@ $as_echo "$ac_cv_safe_to_define___extensions__" >&6; }
 
 
 
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for z/OS USS compilation" >&5
+$as_echo_n "checking for z/OS USS compilation... " >&6; }
+if ${ac_cv_zos_uss+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+
+if test "OS/390" = "`uname`"
+then
+  ac_cv_zos_uss=yes
+else
+  ac_cv_zos_uss=no
+fi
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: ${ac_cv_zos_uss}" >&5
+$as_echo "${ac_cv_zos_uss}" >&6; }
+if test "x$ac_cv_zos_uss" = "xyes"
+then
+    ac_zos_uss_cc_id=unknown
+  echo " $CC " | $EGREP ' (/bin/)?c89 |_' >/dev/null && ac_zos_uss_cc_id=c89
+  echo " $CC " | $EGREP ' (/bin/)?c99 |_' >/dev/null && ac_zos_uss_cc_id=xlc
+  echo " $CC " | $EGREP ' (/bin/)?cc |_'  >/dev/null && ac_zos_uss_cc_id=cc
+  echo " $CC " | $EGREP ' (/bin/)?xlc |_' >/dev/null && ac_zos_uss_cc_id=xlc
+  echo " $CC " | $EGREP ' (/bin/)?xlC |_' >/dev/null && ac_zos_uss_cc_id=xlc++
+  echo " $CC " | $EGREP ' (/bin/)?xlc\+\+ |_' >/dev/null && ac_zos_uss_cc_id=xlc++
+  test "x$GCC" = "xyes" && ac_zos_uss_cc_id=gcc
+    CPPFLAGS="$CPPFLAGS -D_ALL_SOURCE"
+  test "$ac_zos_uss_cc_id" != xlc++ && CPPFLAGS="$CPPFLAGS -D_XOPEN_SOURCE=600"
+  case "$ac_zos_uss_cc_id" in
+  c89)
+                                        if test -n "$_C89_OPTIONS"
+    then
+      { $as_echo "$as_me:${as_lineno-$LINENO}: CC = $CC" >&5
+$as_echo "$as_me: CC = $CC" >&6;}
+      { $as_echo "$as_me:${as_lineno-$LINENO}: _C89_OPTIONS = $_C89_OPTIONS" >&5
+$as_echo "$as_me: _C89_OPTIONS = $_C89_OPTIONS" >&6;}
+    else
+      as_fn_error $? "c89-setup-required
+To build GNU Awk using \"c89\", please set
+
+    _C89_OPTIONS=\"-W c,langlvl(stdc99,libext),haltonmsg(CCN3296)\"
+
+in your environment, and reconfigure. (The above flags cannot be specified
+in CFLAGS/CPPFLAGS, due to the parentheses.)" "$LINENO" 5
+    fi
+    ;;
+  gcc)
+        ;;
+  cc)
+    as_fn_error $? "cc-invalid
+The z/OS \"cc\" compiler does not build GNU Awk correctly.
+
+If the \"xlc\" or \"c89\" compiler is available, please set CC accordingly
+and reconfigure. (\"xlc\" is the recommended compiler on z/OS.)" "$LINENO" 5
+    ;;
+  xlc*)
+        CFLAGS="$CFLAGS -qlanglvl=stdc99:libext"
+        cat >zos-cc <<EOF
+#!/bin/sh
+#
+# This wrapper script addresses two annoying peculiarities of the IBM
+# xlc/c99 compiler on z/OS:
+#
+# 1. Missing header files are considered warnings by default rather
+#    than fatal errors;
+#
+# 2. Include directories specified with -I are searched _after_ the
+#    system include directories (for #include<> directives) rather
+#    than before.
+#
+# This script allows the code and the build system to assume standard
+# compiler behavior.
+#
+
+PS4='zos-cc: '
+REAL_CC="$CC"
+
+set -x
+\$REAL_CC -qhaltonmsg=CCN3296 -qnosearch "\$@" -qsearch=/usr/include
+EOF
+    chmod +x zos-cc
+    { $as_echo "$as_me:${as_lineno-$LINENO}: wrapping $CC with zos-cc to obtain standard behavior" >&5
+$as_echo "$as_me: wrapping $CC with zos-cc to obtain standard behavior" >&6;}
+    CC="`pwd`/zos-cc"
+    ;;
+  *)
+    { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: unrecognized compiler environment" >&5
+$as_echo "$as_me: WARNING: unrecognized compiler environment" >&2;}
+    ;;
+  esac
+fi # ac_cv_zos_uss = yes
+
+
 INSTALL="$ac_aux_dir/install-sh -c"
 export INSTALL