--- MITgcm/tools/genmake2	2004/07/21 16:34:46	1.89
+++ MITgcm/tools/genmake2	2004/10/05 16:10:31	1.104
@@ -1,6 +1,6 @@
 #! /usr/bin/env bash
 #
-# $Header: /home/ubuntu/mnt/e9_copy/MITgcm/tools/genmake2,v 1.89 2004/07/21 16:34:46 edhill Exp $
+# $Header: /home/ubuntu/mnt/e9_copy/MITgcm/tools/genmake2,v 1.104 2004/10/05 16:10:31 edhill Exp $
 #
 # Makefile generator for MITgcm UV codes
 #   created  by cnh 03/98
@@ -124,10 +124,10 @@
 EOF
     test -f Makefile  &&  mv -f Makefile Makefile.bak
     cat <<EOF >> Makefile
-%.$tfs : %.F
 .SUFFIXES:
-genmake_hello.$tfs: genmake_hello.F
-	$LN genmake_hello.F genmake_hello.$tfs
+.SUFFIXES: .$tfs .F
+.F.$tfs:
+	$LN \$< \$@
 EOF
     $MAKE "genmake_hello."$tfs > /dev/null 2>&1
     RETVAL=$?
@@ -195,30 +195,48 @@
 	    echo "    a system-default makedepend was not found."
 	    
 	    #  Try to build the cyrus implementation
-	    rm -f ./genmake_cy_md
-	    (
-		cd $ROOTDIR/tools/cyrus-imapd-makedepend  \
-		    &&  ./configure > /dev/null 2>&1  \
-		    &&  make > /dev/null 2>&1
-		if test -x ./makedepend.exe ; then
-		    $LN ./makedepend.exe ./makedepend
-		fi
-		./makedepend ifparser.c > /dev/null 2>&1  \
-		    &&  echo "true"
-	    ) > ./genmake_cy_md
-	    grep true ./genmake_cy_md > /dev/null 2>&1
+	    build_cyrus_makedepend
 	    RETVAL=$?
-	    if test "x$RETVAL" = x0 ; then
-		MAKEDEPEND='$(TOOLSDIR)/cyrus-imapd-makedepend/makedepend'
-	    else
+	    if test "x$RETVAL" != x0 ; then
 		MAKEDEPEND='$(TOOLSDIR)/xmakedepend'
 	    fi
 	    rm -f ./genmake_cy_md
 	fi
+    else
+	#  echo "MAKEDEPEND=${MAKEDEPEND}"
+	echo "${MAKEDEPEND}" | grep -i cyrus > /dev/null 2>&1
+	RETVAL=$?
+	if test x"$RETVAL" = x0 ; then
+	    build_cyrus_makedepend
+	fi
     fi
 }
 
 
+build_cyrus_makedepend()  {
+    rm -f ./genmake_cy_md
+    (
+	cd $ROOTDIR/tools/cyrus-imapd-makedepend  \
+	    &&  ./configure > /dev/null 2>&1  \
+	    &&  make > /dev/null 2>&1
+	if test -x ./makedepend.exe ; then
+	    $LN ./makedepend.exe ./makedepend
+	fi
+	./makedepend ifparser.c > /dev/null 2>&1  \
+	    &&  echo "true"
+    ) > ./genmake_cy_md
+    grep true ./genmake_cy_md > /dev/null 2>&1
+    RETVAL=$?
+    rm -f ./genmake_cy_md
+    if test "x$RETVAL" = x0 ; then
+	MAKEDEPEND='$(TOOLSDIR)/cyrus-imapd-makedepend/makedepend'
+	return 0
+    else
+	echo "WARNING: unable to build cyrus-imapd-makedepend"
+	return 1
+    fi
+}
+
 # Guess possible config options for this host
 find_possible_configs()  {
 
@@ -251,7 +269,47 @@
 
     look_for_makedepend
 
-    # look for possible fortran compilers
+    #================================================================
+    #  look for possible C compilers
+    tmp="$MITGCM_CC $CC gcc c89 cc c99 mpicc"
+    p_CC=
+    for c in $tmp ; do
+	rm -f ./genmake_hello.c  ./genmake_hello
+	cat >> genmake_hello.c << EOF
+#include <stdio.h>
+int main(int argc, char **argv) {
+  printf("Hello!\n");
+  return 0;
+}
+EOF
+	$c -o genmake_hello genmake_hello.c > /dev/null 2>&1
+	RETVAL=$?
+	if test "x${RETVAL}" = x0 ; then
+	    p_CC="$p_CC $c"
+	fi
+    done
+    rm -f ./genmake_hello.c ./genmake_hello
+    if test "x${p_CC}" = x ; then
+	cat 1>&2 <<EOF
+
+Error: No C compilers were found in your path.  Please specify one using:
+
+    1) an "optfile" on (eg. "-optfile=path/to/OPTFILE"),
+    2) the CC or MITGCM_CC environment variables.
+
+EOF
+	exit 1
+    else
+	echo "  The possible C compilers found in your path are:"
+	echo "   "$p_CC
+	if test "x$CC" = x ; then
+	    CC=`echo $p_CC | $AWK '{print $1}'`
+	    echo "  Setting C compiler to: "$CC
+	fi
+    fi
+
+    #================================================================
+    #  look for possible FORTRAN compilers
     tmp="$MITGCM_FC $FC efc g77 f77 pgf77 pgf95 ifc f90 f95 mpif77 mpf77 mpxlf95"
     p_FC=
     for c in $tmp ; do
@@ -277,7 +335,7 @@
 
     1) an "optfile" on (eg. "-optfile=path/to/OPTFILE"),
     2) a command-line option (eg. "-fc NAME"), or
-    3) the MITGCM_FC environment variable.
+    3) the FC or MITGCM_FC environment variables.
 
 EOF
 	exit 1
@@ -448,6 +506,11 @@
           will search for a working compiler by trying a list of
           "usual suspects" such as g77, f77, etc.
 
+    -cc NAME | --cc NAME | -cc=NAME | --cc=NAME
+          Use "NAME" as the C compiler.  By default, genmake 
+          will search for a working compiler by trying a list of
+          "usual suspects" such as gcc, c89, cc, etc.
+
     -[no]ieee | --[no]ieee
           Do or don't use IEEE numerics.  Note that this option 
           *only* works if it is supported by the OPTFILE that 
@@ -457,8 +520,8 @@
           Include MPI header files and link to MPI libraries
     -mpi=PATH | --mpi=PATH
           Include MPI header files and link to MPI libraries using MPI_ROOT
-          set to PATH. i.e. Include files from $PATH/include, link to libraries
-          from $PATH/lib and use binaries from $PATH/bin.
+          set to PATH. i.e. Include files from \$PATH/include, link to libraries
+          from \$PATH/lib and use binaries from \$PATH/bin.
 
     -bash NAME
           Explicitly specify the Bourne or BASH shell to use
@@ -506,7 +569,7 @@
 EOF
 	return 1
     fi
-    c_tcall=`nm genmake_test.o | grep 'T ' | grep tcall | cut -d ' ' -f 3`
+    c_tcall=`nm genmake_test.o 2>/dev/null | grep 'T ' | grep tcall | cut -d ' ' -f 3`
     RETVAL=$?
     if test "x$RETVAL" != x0 ; then
 	FC_NAMEMANGLE=$default_nm
@@ -536,7 +599,7 @@
 EOF
 	return 1
     fi
-    f_tcall=`nm genmake_tcomp.o | grep 'T ' | grep tcall | cut -d ' ' -f 3`
+    f_tcall=`nm genmake_tcomp.o 2>/dev/null | grep 'T ' | grep tcall | cut -d ' ' -f 3`
     RETVAL=$?
     if test "x$RETVAL" != x0 ; then
 	FC_NAMEMANGLE=$default_nm
@@ -613,6 +676,7 @@
 
 
 check_netcdf_libs()  {
+    echo "" > genmake_tnc.log
     cat <<EOF > genmake_tnc.for
       program fgennc
 #include "netcdf.inc"
@@ -625,23 +689,30 @@
       IF (iret .NE. NF_NOERR) write(*,*) NF_STRERROR(iret)
       end
 EOF
-    #echo "$CPP $DEFINES $INCLUDES"
-    $CPP $DEFINES $INCLUDES genmake_tnc.for > genmake_tnc.f  \
-	&&  $FC $FFLAGS $FOPTIM -o genmake_tnc genmake_tnc.f $LIBS >> genmake_tnc.log 2>&1
+    #echo "$CPP $DEFINES $INCLUDES genmake_tnc.for > genmake_tnc.f"
+    #echo "$FC $FFLAGS $FOPTIM -c genmake_tnc.f"
+    #echo "$LINK -o genmake_tnc.o $LIBS"
+    $CPP $DEFINES $INCLUDES genmake_tnc.for > genmake_tnc.f 2>/dev/null  \
+	&&  $FC $FFLAGS $FOPTIM -c genmake_tnc.f >> genmake_tnc.log 2>&1  \
+	&&  $LINK -o genmake_tnc genmake_tnc.o $LIBS >> genmake_tnc.log 2>&1
     RET_COMPILE=$?
-    test -x ./genmake_tnc  &&  ./genmake_tnc >> genmake_tnc.log 2>&1
-    RETVAL=$?
-    if test "x$RET_COMPILE" = x0 -a "x$RETVAL" = x0 ; then
+
+    #EH3  Remove test program execution for machines that either disallow
+    #EH3  execution or cannot support it (eg. cross-compilers)
+    #EH3
+    #EH3 test -x ./genmake_tnc  &&  ./genmake_tnc >> genmake_tnc.log 2>&1
+    #EH3 RETVAL=$?
+    #EH3 if test "x$RET_COMPILE" = x0 -a "x$RETVAL" = x0 ; then
+
+    if test "x$RET_COMPILE" = x0 ; then
 	HAVE_NETCDF=t
     else
 	# try again with "-lnetcdf" added to the libs
-	$CPP $DEFINES $INCLUDES genmake_tnc.for > genmake_tnc.f  \
-	    &&  $FC $FFLAGS $FOPTIM -o genmake_tnc genmake_tnc.f \
-	    $LIBS -lnetcdf >> genmake_tnc_2.log 2>&1
+	$CPP $DEFINES $INCLUDES genmake_tnc.for > genmake_tnc.f 2>/dev/null  \
+	    &&  $FC $FFLAGS $FOPTIM -c genmake_tnc.f >> genmake_tnc.log 2>&1  \
+	    &&  $LINK -o genmake_tnc genmake_tnc.o $LIBS -lnetcdf >> genmake_tnc.log 2>&1
 	RET_COMPILE=$?
-	test -x ./genmake_tnc  &&  ./genmake_tnc >> genmake_tnc.log 2>&1
-	RETVAL=$?
-	if test "x$RET_COMPILE" = x0 -a "x$RETVAL" = x0 ; then
+	if test "x$RET_COMPILE" = x0 ; then
 	    LIBS="$LIBS -lnetcdf"
 	    HAVE_NETCDF=t
 	else
@@ -665,6 +736,7 @@
 S64=
 KPP=
 FC=
+#CC=gcc
 CPP=
 LINK=
 DEFINES=
@@ -672,7 +744,7 @@
 ENABLE=
 DISABLE=
 MAKEFILE=
-MAKEDEPEND=
+#MAKEDEPEND=
 PDEPEND=
 DUMPSTATE=t
 PDEFAULT=
@@ -710,9 +782,11 @@
 PWD=`pwd`
 MAKE=make
 AWK=awk
-THISHOSTNAME=`hostname`
+THISHOST=`hostname`
 THISCWD=`pwd`
 THISDATE=`date`
+THISUSER=`echo $USER`
+THISVER=
 MACHINE=`uname -a`
 EXECUTABLE=
 EXEHOOK=
@@ -746,7 +820,7 @@
 #  The following state is not directly set by command-line switches
 gm_s3="LN S64 KPP LINK PACKAGES MAKEDEPEND PDEPEND PDEFAULT INCLUDES FFLAGS FOPTIM "
 gm_s4="CFLAGS KFLAGS1 KFLAGS2 LIBS KPPFILES NOOPTFILES NOOPTFLAGS"
-gm_s5="TOOLSDIR SOURCEDIRS INCLUDEDIRS PWD MAKE THISHOSTNAME THISDATE MACHINE"
+gm_s5="TOOLSDIR SOURCEDIRS INCLUDEDIRS PWD MAKE THISHOST THISUSER THISDATE THISVER MACHINE"
 gm_s6="EXECUTABLE EXEHOOK EXEDIR PACKAGES_CONF"
 gm_s7="HAVE_SYSTEM HAVE_FDATE FC_NAMEMANGLE HAVE_ETIME"
 
@@ -787,7 +861,7 @@
     echo "none found"
 fi
 
-#  echo "$0::$1:$2:$3:$4:$5:$6:$7:"
+#echo "$0::$1:$2:$3:$4:$5:$6:$7:"
 #OPTIONS=
 #n=0
 #for i ; do 
@@ -799,7 +873,7 @@
 #done
 #parse_options
 ac_prev=
-for ac_option in $@ ; do
+for ac_option in "$@" ; do
 
     G2ARGS="$G2ARGS \"$ac_option\""
 
@@ -895,7 +969,12 @@
 #		ac_prev=cpp ;;
 #	    -cpp=* | --cpp=*)
 #		CPP=$ac_optarg ;;
-	    
+	
+	-cc | --cc)
+	    ac_prev=CC ;;
+	-cc=* | --cc=*)
+	    CC=$ac_optarg ;;
+	
 	-fortran | --fortran | -fc | --fc)
 	    ac_prev=FC ;;
 	-fc=* | --fc=*)
@@ -966,6 +1045,7 @@
     echo 
 fi
 
+#  Find the MITgcm ${ROOTDIR}
 if test "x${ROOTDIR}" = x ; then
     tmp=`echo $PWD | sed -e 's/\// /g' | awk '{print $NR}'`
     if test "x$tmp" = "xbin" -a -d ../model -a -d ../eesup -a -d ../pkg ; then
@@ -992,6 +1072,11 @@
     exit 1
 fi
 
+#  Find the MITgcm ${THISVER}
+if test -f "${ROOTDIR}/doc/tag-index" ; then
+    THISVER=`grep checkpoint ${ROOTDIR}/doc/tag-index | head -1`
+fi
+
 echo "  getting OPTFILE information:  "
 if test "x${OPTFILE}" = x ; then
     if test "x$MITGCM_OF" = x ; then
@@ -1051,7 +1136,7 @@
     fi
 fi
 
-#  Check that FC, LINK, CPP, S64, LN, and MAKE are defined.  If not,
+#  Check that FC, CC, LINK, CPP, S64, LN, and MAKE are defined.  If not,
 #  either set defaults or complain and abort!
 if test ! "x$BASH" = x ; then
     # add a trailing space so that it works within the Makefile syntax (see below)
@@ -1067,6 +1152,16 @@
 EOF
     exit 1
 fi
+if test "x$CC" = x ; then
+    CC=cc
+#     cat <<EOF 1>&2
+# Error: no C compiler: please specify using one of the following:
+#   1) within the options file ("CC=...") as specified by "-of=OPTFILE"
+#   2) the "-cc=XXX" command-line option
+#   3) the "./genmake_local" file
+# EOF
+#     exit 1
+fi
 if test "x$LINK" = x ; then
     LINK=$FC
 fi
@@ -1250,7 +1345,30 @@
     exit 1
 fi
 if test "x$S64" = x ; then
-    S64='$(TOOLSDIR)/set64bitConst.sh'
+    echo "3.0 _d 3" | ${TOOLSDIR}/set64bitConst.sh > /dev/null 2>&1
+    RETVAL=$?
+    if test "x${RETVAL}" = x0 ; then
+	S64='$(TOOLSDIR)/set64bitConst.sh'
+    else
+	echo "3.0 _d 3" | ${TOOLSDIR}/set64bitConst.csh > /dev/null 2>&1
+	RETVAL=$?
+	if test "x${RETVAL}" = x0 ; then
+	    S64='$(TOOLSDIR)/set64bitConst.csh'
+	else
+	    cat <<EOF
+
+ERROR: neither of the two default scripts:
+
+    ${TOOLSDIR}/set64bitConst.sh
+    ${TOOLSDIR}/set64bitConst.csh
+
+  are working so please check paths or specify (with \$S64) a 
+  working version of this script.
+
+EOF
+	    exit 1
+	fi
+    fi
 fi
 THIS_SCRIPT=`echo ${0} | sed 's:'$TOOLSDIR':\$(TOOLSDIR):'`
 
@@ -1395,6 +1513,41 @@
 rm -f ./.tmp_pack
 echo "    packages are:  $PACKAGES"
 
+#  Check availability of NetCDF and then either build the MNC template
+#  files or delete mnc from the list of available packages.
+echo $PACKAGES | grep ' mnc ' > /dev/null 2>&1
+RETVAL=$?
+if test "x$RETVAL" = x0 ; then
+    if test "x$HAVE_NETCDF" != xt ; then
+	cat <<EOF
+
+*********************************************************************
+WARNING: the "mnc" package was enabled but tests failed to compile
+  NetCDF applications.  Please check that:
+
+  1) NetCDF is correctly installed for this compiler and
+  2) the LIBS variable (within the "optfile") specifies the correct 
+       NetCDF library to link against.
+
+  Due to this failure, the "mnc" package is now DISABLED.
+*********************************************************************
+
+EOF
+	PACKAGES=`echo $PACKAGES | sed -e 's/mnc//g'`
+	DISABLE="$DISABLE mnc"
+    else
+	( cd $ROOTDIR"/pkg/mnc" && $MAKE templates ) > make_mnc.errors 2>&1
+	RETVAL=$?
+	if test "x${RETVAL}" = x0 ; then
+	    rm -f make_mnc.errors
+	else
+	    echo "Error: problem encountered while building source files in pkg/mnc:"
+	    cat make_mnc.errors 1>&2
+	    exit 1
+	fi
+    fi
+fi
+
 echo "  applying package dependency rules"
 ck=
 while test "x$ck" != xtt ; do
@@ -1479,33 +1632,6 @@
     fi
 done
 
-#  Build MNC templates and check for ability to build and use NetCDF
-echo $PACKAGES | grep ' mnc ' > /dev/null 2>&1
-RETVAL=$?
-if test "x$RETVAL" = x0 ; then
-    ( cd $ROOTDIR"/pkg/mnc" && $MAKE templates ) > make_mnc.errors 2>&1
-    RETVAL=$?
-    if test "x${RETVAL}" = x0 ; then
-	rm -f make_mnc.errors
-    else
-	echo "Error: problem encountered while building source files in pkg/mnc:"
-	cat make_mnc.errors 1>&2
-	exit 1
-    fi
-    if test "x$HAVE_NETCDF" != xt ; then
-	cat <<EOF
-
-WARNING: the "mnc" package has been enabled but tests failed to 
-  compile and/or execute NetCDF applications.  Please check that:
-
-  1) NetCDF is installed for your compiler and
-  2) the LIBS variable (within the 'optfile") specifies the correct 
-       NetCDF library to link against.
-  
-EOF
-    fi
-fi
-
 # Create a list of #define and #undef to enable/disable packages
 PACKAGES_DOT_H=PACKAGES_CONFIG.h
 #  The following UGLY HACK sets multiple "#undef"s and it needs to go 
@@ -1652,6 +1778,8 @@
 			;;
                   ./FC_NAMEMANGLE.h)
 			;;
+                  ./BUILD_INFO.h)
+			;;
                   *)
 		  	touch .links.tmp/$sf
 		  	deplist="$deplist $sf"
@@ -1708,7 +1836,7 @@
 echo "# by the command:" >> $MAKEFILE
 echo "#    $0 $G2ARGS" >> $MAKEFILE
 echo "# executed by:" >> $MAKEFILE
-echo "#    $USER@${THISHOSTNAME}:${THISCWD}" >> $MAKEFILE
+echo "#    ${THISUSER}@${THISHOST}:${THISCWD}" >> $MAKEFILE
 
 EXE_AD=$EXECUTABLE"_ad"
 EXE_FTL=$EXECUTABLE"_ftl"
@@ -1754,7 +1882,7 @@
 DISABLED_PACKAGES = ${DISABLED_PACKAGES}
 
 # These files are created by Makefile
-SPECIAL_FILES = ${PACKAGES_DOT_H} AD_CONFIG.h FC_NAMEMANGLE.h
+SPECIAL_FILES = ${PACKAGES_DOT_H} AD_CONFIG.h FC_NAMEMANGLE.h BUILD_INFO.h
 
 EOF
 
@@ -1773,6 +1901,8 @@
 FC = ${FC}
 # Fortran compiler
 F90C = ${F90C}
+# C compiler
+CC = ${CC}
 # Link editor
 LINK = ${LINK} ${LDADD}
 
@@ -1856,7 +1986,7 @@
 cleanlinks:
 	-find . -type l -exec rm {} \;
 
-# Special targets ($SPECIAL_FILES) which are create by make
+# Special targets (SPECIAL_FILES) which are create by make
 ${PACKAGES_DOT_H}:
 	@echo Creating \$@ ...
 	@$BASH\$(TOOLSDIR)/convert_cpp_cmd2defines "Warning - this file is automatically generated - do NOT edit" -bPACKAGES_CONFIG_H "Disabled packages:" \$(DISABLED_PACKAGES) " " "Enabled packages:" \$(ENABLED_PACKAGES) > \$@
@@ -1867,9 +1997,21 @@
 	@echo Creating \$@ ...
 	echo "$FC_NAMEMANGLE" > \$@
 
+BUILD_INFO.h:
+	@echo Creating \$@ ...
+EOF
+
+test ! "x$THISVER" = x  && echo "	-echo \"#define THISVER '$THISVER'\" > \$@"   >> $MAKEFILE
+test ! "x$THISUSER" = x && echo "	-echo \"#define THISUSER '$THISUSER'\" >> \$@" >> $MAKEFILE
+test ! "x$THISDATE" = x && echo "	-echo \"#define THISDATE '$THISDATE'\" >> \$@" >> $MAKEFILE
+test ! "x$THISHOST" = x && echo "	-echo \"#define THISHOST '$THISHOST'\" >> \$@" >> $MAKEFILE
+
+cat >>$MAKEFILE <<EOF
+
 # The normal chain of rules is (  .F - .$FS - .o  )
 
-%.o : %.F
+## This nullifies any default implicit rules concerning these two file types:
+## %.o : %.F
 
 .F.$FS:
 	\$(CPP) \$(DEFINES) \$(INCLUDES) > \$@