0
0
mirror of https://github.com/nodejs/node.git synced 2024-11-30 15:30:56 +01:00
nodejs/tools/create_expfile.sh
Richard Lau 4804a18812 build: tidy up comments in create_expfile.sh
Fixes spelling, adds punctuation and rewords some sentences for
readability in the comments of `tools/create_expfile.sh`.

PR-URL: https://github.com/nodejs/node/pull/26220
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: James M Snell <jasnell@gmail.com>
2019-02-22 12:42:32 -05:00

52 lines
1.4 KiB
Bash
Executable File

#!/bin/sh
# Writes out all of the exported symbols to a file.
# This is needed on AIX as symbols are not exported
# by an executable by default and need to be listed
# specifically for export so that they can be used
# by native add-ons.
#
# The raw symbol data is obtained by using nm on
# the .a files which make up the node executable.
#
# -Xany processes symbols for both 32-bit and
# 64-bit (the default is for 32-bit only).
#
# -g selects only exported symbols.
#
# -C, -B and -p ensure that the output is in a
# format that can be easily parsed and converted
# into the required symbol.
#
# -C suppresses the demangling of C++ names.
# -B writes the output in BSD format.
# -p displays the info in a standard portable
# output format.
#
# Only include symbols if they are of the following
# types and don't start with a dot.
#
# T - Global text symbol.
# D - Global data symbol.
# B - Global bss symbol.
#
# The final sort allows removal of any duplicates.
#
# Symbols for the gtest libraries are excluded as
# they are not linked into the node executable.
#
echo "Searching $1 to write out expfile to $2"
# This special sequence must be at the start of the exp file.
echo "#!." > $2.tmp
# Pull the symbols from the .a files.
find $1 -name "*.a" | grep -v gtest \
| xargs nm -Xany -BCpg \
| awk '{
if ((($2 == "T") || ($2 == "D") || ($2 == "B")) &&
(substr($3,1,1) != ".")) { print $3 }
}' \
| sort -u >> $2.tmp
mv -f $2.tmp $2