Add f77 shell script frontend for f2c/gcc

svn path=/head/; revision=3233

usr.bin/f2c/Makefile

@@ -29,4 +29,8 @@ tokdefs.h: ${.CURDIR}/tokens
 CLEANFILES+=\
 	gram.c tokdefs.h y.tab.h
 
+afterinstall:
+	${INSTALL} -c -o ${BINOWN} -g ${BINGRP} -m ${BINMODE} \
+	  ${INSTALLFLAGS} f77.script ${DESTDIR}${BINDIR}/f77
+
 .include <bsd.prog.mk>

usr.bin/f2c/f77.script

@@ -0,0 +1,114 @@
+#!/bin/sh
+# Compile Fortran code, adding -lf2c.
+# This is a slightly modified g++ script.
+
+: || exec /bin/sh -f $0 $argv:q
+
+# The compiler name might be different when doing cross-compilation
+# (this should be configured)
+gcc_name=cc
+speclang=-xnone
+
+# replace the command name by the name of the new command
+progname=`basename $0`
+case "$0" in
+  */*)
+    gcc=`echo $0 | sed -e "s;/[^/]*$;;"`/$gcc_name
+    ;;
+  *)
+    gcc=$gcc_name
+    ;;
+esac
+
+# $first is yes for first arg, no afterwards.
+first=yes
+# If next arg is the argument of an option, $quote is non-empty.
+# More precisely, it is the option that wants an argument.
+quote=
+# $library is made empty to disable use of libf2c.
+#library=-lF77 -lI77 -lm
+library="-lf2c -lm"
+numargs=$#
+
+# ash requires the newline before `do'.
+for arg
+do
+  if [ $first = yes ]
+  then
+    # Need some 1st arg to `set' which does not begin with `-'.
+    # We get rid of it after the loop ends.
+    set gcc
+    first=no
+  fi
+  # If you have to ask what this does, you should not edit this file. :-)
+  # The ``S'' at the start is so that echo -nostdinc does not eat the
+  # -nostdinc.
+  arg=`echo "S$arg" | sed "s/^S//; s/'/'\\\\\\\\''/g"`
+  if [ x$quote != x ]
+  then
+    quote=
+  else
+    quote=
+    case $arg in
+      -nostdlib)
+	# Inhibit linking with -lf2c.
+	library=
+	;;
+      -lm | -lmath)
+ 	# Because libf2c uses things from the math library, make sure it
+	# always comes before the math library.  We recognize both -lm
+	# and -lmath, since on some systems (e.g. m88k SVR3), it
+	# doesn't call it libm.a for some reason.
+	#set "$@" $library
+	#library=""
+	;;
+      -[bBVDUoeTuIYmLiA] | -Tdata)
+	# these switches take following word as argument,
+	# so don't treat it as a file name.
+	quote=$arg
+	;;
+      -[cSEM] | -MM)
+	# Don't specify libraries if we won't link,
+	# since that would cause a warning.
+	library=
+	;;
+      -x*)
+	speclang=$arg
+	;;
+      -v)
+	# catch `f77 -v'
+	if [ $numargs = 1 ] ; then library="" ; fi
+	;;
+      -*)
+	# Pass other options through; they don't need -x and aren't inputs.
+	;;
+      *)
+	# If file ends in .i, put options around it.
+	# But not if a specified -x option is currently active.
+	case "$speclang $arg" in -xnone\ *.i)
+	  set "$@" -xf2c "'$arg'" -xnone
+	  continue
+	esac
+	;;
+    esac
+  fi
+  set "$@" "'$arg'"
+done
+
+# Get rid of that initial 1st arg
+if [ $first = no ]; then
+  shift
+else
+  echo "$0: No input files specified."
+  exit 1
+fi
+
+if [ x$quote != x ]
+then
+  echo "$0: argument to \`$quote' missing"
+  exit 1
+fi
+
+eval $gcc "$@" $library
+
+