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authorMichael Adam <obnox@samba.org>2009-08-28 15:01:17 +0200
committerMichael Adam <obnox@samba.org>2009-09-11 15:31:23 +0200
commit4530fcd820af41080d820159605880d33fd48476 (patch)
tree698e35014b46467b3b4be2681ddc32dfe9933221
parent9da49338043dedbf17c99ceed24c2934514d0157 (diff)
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tevent: add scripts to extract library symbols (exports file) from headers
Michael
-rw-r--r--lib/tevent/script/mksyms.awk76
-rwxr-xr-xlib/tevent/script/mksyms.sh45
2 files changed, 121 insertions, 0 deletions
diff --git a/lib/tevent/script/mksyms.awk b/lib/tevent/script/mksyms.awk
new file mode 100644
index 0000000000..a30bea4d34
--- /dev/null
+++ b/lib/tevent/script/mksyms.awk
@@ -0,0 +1,76 @@
+#
+# mksyms.awk
+#
+# Extract symbols to export from C-header files.
+# output in version-script format for linking shared libraries.
+#
+# Copyright (C) 2008 Micheal Adam <obnox@samba.org>
+#
+BEGIN {
+ inheader=0;
+ current_file="";
+ print "#"
+ print "# This file is automatically generated with \"make symbols\". DO NOT EDIT "
+ print "#"
+ print "{"
+ print "\tglobal:"
+}
+
+END {
+ print""
+ print "\tlocal: *;"
+ print "};"
+}
+
+{
+ if (FILENAME!=current_file) {
+ print "\t\t# The following definitions come from",FILENAME
+ current_file=FILENAME
+ }
+ if (inheader) {
+ if (match($0,"[)][ \t]*[;][ \t]*$")) {
+ inheader = 0;
+ }
+ next;
+ }
+}
+
+/^static/ || /^[ \t]*typedef/ || !/^[a-zA-Z\_]/ {
+ next;
+}
+
+/^extern[ \t]+[^()]+[;][ \t]*$/ {
+ gsub(/[^ \t]+[ \t]+/, "");
+ sub(/[;][ \t]*$/, "");
+ printf "\t\t%s;\n", $0;
+ next;
+}
+
+# look for function headers:
+{
+ gotstart = 0;
+ if ($0 ~ /^[A-Za-z_][A-Za-z0-9_]+/) {
+ gotstart = 1;
+ }
+ if(!gotstart) {
+ next;
+ }
+}
+
+/[_A-Za-z0-9]+[ \t]*[(].*[)][ \t]*;[ \t]*$/ {
+ sub(/[(].*$/, "");
+ gsub(/[^ \t]+[ \t]+/, "");
+ gsub(/^[*]/, "");
+ printf "\t\t%s;\n",$0;
+ next;
+}
+
+/[_A-Za-z0-9]+[ \t]*[(]/ {
+ inheader=1;
+ sub(/[(].*$/, "");
+ gsub(/[^ \t]+[ \t]+/, "");
+ gsub(/^[*]/, "");
+ printf "\t\t%s;\n",$0;
+ next;
+}
+
diff --git a/lib/tevent/script/mksyms.sh b/lib/tevent/script/mksyms.sh
new file mode 100755
index 0000000000..714d55abae
--- /dev/null
+++ b/lib/tevent/script/mksyms.sh
@@ -0,0 +1,45 @@
+#! /bin/sh
+
+#
+# mksyms.sh
+#
+# Extract symbols to export from C-header files.
+# output in version-script format for linking shared libraries.
+#
+# This is the shell wrapper for the mksyms.awk core script.
+#
+# Copyright (C) 2008 Micheal Adam <obnox@samba.org>
+#
+
+LANG=C; export LANG
+LC_ALL=C; export LC_ALL
+LC_COLLATE=C; export LC_COLLATE
+
+if [ $# -lt 2 ]
+then
+ echo "Usage: $0 awk output_file header_files"
+ exit 1
+fi
+
+awk="$1"
+shift
+
+symsfile="$1"
+shift
+symsfile_tmp="$symsfile.$$.tmp~"
+
+proto_src="`echo $@ | tr ' ' '\n' | sort | uniq `"
+
+echo creating $symsfile
+
+mkdir -p `dirname $symsfile`
+
+${awk} -f `dirname $0`/mksyms.awk $proto_src > $symsfile_tmp
+
+if cmp -s $symsfile $symsfile_tmp 2>/dev/null
+then
+ echo "$symsfile unchanged"
+ rm $symsfile_tmp
+else
+ mv $symsfile_tmp $symsfile
+fi