* Imported original elk 3.0 tree.

git-svn-id: svn://svn.zoy.org/elk/trunk@1 55e467fa-43c5-0310-a8a2-de718669efc6

scripts/src/ldflags

@@ -0,0 +1,8 @@
+. ../config/system
+. ../config/site
+
+cat <<HERE
+# Echo the LDFLAGS required for linking the Elk interpreter kernel.
+
+echo $ldflags
+HERE

scripts/src/linkscheme

@@ -0,0 +1,89 @@
+. ../config/system
+. ../config/site
+
+cat <<HERE
+#!/bin/sh
+
+# This script creates an interpreter that is linked statically with your
+# extensions and/or application-specific object files (usually on platforms
+# that don't support incremental linking).
+# 
+# The first argument is the executable to be created, the remaining
+# arguments are the object files and optional libraries.
+#
+# See INSTALL in the toplevel directory of the distribution for an
+# example and further information.
+
+if [ \$# = 0 ]
+then
+    echo Usage: "\$0: output-file [object-files]"
+    exit 1
+fi
+ofile=$install_dir/lib/standalone.o
+aout=\$1
+if [ -f \$aout ]
+then
+    echo \$aout already exists.
+    exit 1
+fi
+shift
+extensions=\$*
+
+# A special case is required for AIX.  The AIX linker discards all object
+# files whose external symbols are not referenced.  This stupid \`garbage
+# collection' cannot be switched off.  Since extensions do not have entry
+# points that are called directly, they are garbage collected away by the
+# linker (the interpreter scans its symbol table on startup to find the
+# entry points and calls them indirectly by using the symbol values).
+#
+# To avoid this, we have to create an \`export list' containing at least one
+# external function from each extension.  We are using the elk_init_
+# functions, as it is guaranteed that each extensions exports at least one
+# such function.
+#
+# We grep in the nm output for all lines of this form (i.e. entries that
+# start with .elk_init_ and have a symbol type of "extern"):
+# 
+# .elk_init_foobar      |    113520|extern|             |      |     |.text
+#
+# then select the symbol name, and delete the initial period.
+
+case $system in
+*-aix3*-cc)
+    echo Creating export list for AIX 3.x linker:
+    for e in \$extensions
+    do
+	case \$e in
+	-l*) ;;
+	  *)
+	    nm -e \$e | grep '^\.$init_prefix.*|extern|' | sed -e 's/[|.]//g'\\
+		| awk '{print \$1}' >> exportlist
+	    ;;
+	esac
+    done
+    cat exportlist
+    $cc -o \$aout -bexport:exportlist \$ofile \$extensions $ldflags
+    rm exportlist
+    ;;
+*-aix4*-cc)
+    echo Creating export list for AIX 4.x linker:
+    for e in \$extensions
+    do
+	case \$e in
+	-l*) ;;
+	  *)
+	    nm \$e | grep '^\.$init_prefix.* *T ' \\
+		| awk '{print \$1}' >> exportlist
+	    ;;
+	esac
+    done
+    cat exportlist
+    $cc -o \$aout -bexport:exportlist \$ofile \$extensions $ldflags
+    rm exportlist
+    ;;
+*)
+    $cc -o \$aout \$ofile \$extensions $ldflags
+    ;;
+esac
+chmod +x \$aout
+HERE

scripts/src/makedl-dl

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+. ../config/system
+. ../config/site
+
+cat <<HERE
+#!/bin/sh
+
+# Link one dynamically loadable extension (an object file); or
+# combine several object files into one dynamically loadable extension
+# and resolve against libraries.
+#
+# Arguments are the output file and one or more object files and libraries.
+
+if [ \$# -lt 2 ]; then
+    echo Usage: "\$0: output-file object-files [libraries]"
+    exit 1
+fi
+
+output=\$1
+shift
+
+$ld -r $obj_ldflags \$*
+mv a.out \$output
+chmod 644 \$output
+HERE

scripts/src/makedl-ld

@@ -0,0 +1,24 @@
+. ../config/system
+. ../config/site
+
+cat <<HERE
+#!/bin/sh
+
+# Link one dynamically loadable extension (an object file); or
+# combine several object files into one dynamically loadable extension
+# and resolve against libraries.
+#
+# Arguments are the output file and one or more object files and libraries.
+
+if [ \$# -lt 2 ]; then
+    echo Usage: "\$0: output-file object-files [libraries]"
+    exit 1
+fi
+
+output=\$1
+shift
+
+$ld -r $obj_ldflags $xflag \$*
+mv a.out \$output
+chmod 644 \$output
+HERE

scripts/src/makedl-none

@@ -0,0 +1,25 @@
+. ../config/system
+. ../config/site
+
+cat <<HERE
+#!/bin/sh
+
+# Dynamic loading is not supported on this platform.  This shell script
+# just combines several .o files into a single .o file.
+#
+# Arguments are the output file and one or more object files and libraries.
+
+if [ \$# -lt 2 ]; then
+    echo Usage: "\$0: output-file object-files [libraries]"
+    exit 1
+fi
+
+output=\$1
+shift
+
+if [ \$# != 1 -o _\$1 != _\$output ]; then
+    $ld -r $obj_ldflags $xflag \$*
+    mv a.out \$output
+    chmod 644 \$output
+fi
+HERE

scripts/src/makedl-rld

@@ -0,0 +1,23 @@
+. ../config/system
+. ../config/site
+
+cat <<HERE
+#!/bin/sh
+
+# Link one dynamically loadable extension (an object file); or
+# combine several object files into one dynamically loadable extension
+# and resolve against libraries.
+#
+# Arguments are the output file and one or more object files and libraries.
+
+if [ \$# -lt 2 ]; then
+    echo Usage: "\$0: output-file object-files [libraries]"
+    exit 1
+fi
+
+output=\$1
+shift
+
+$ld -r -o \$output $obj_ldflags $xflag \$*
+chmod 644 \$output
+HERE

scripts/src/makedl-shl

@@ -0,0 +1,24 @@
+. ../config/system
+. ../config/site
+
+cat <<HERE
+#!/bin/sh
+
+# Link one dynamically loadable extension (an object file); or
+# combine several object files into one dynamically loadable extension
+# and resolve against libraries.
+#
+# Arguments are the output file and one or more object files and libraries.
+
+if [ \$# -lt 2 ]; then
+    echo Usage: "\$0: output-file object-files [libraries]"
+    exit 1
+fi
+
+output=\$1
+shift
+
+$ld -b $obj_ldflags $xflag \$*
+mv a.out \$output
+chmod 755 \$output
+HERE