1#!/usr/bin/env perl 2#*************************************************************************** 3# _ _ ____ _ 4# Project ___| | | | _ \| | 5# / __| | | | |_) | | 6# | (__| |_| | _ <| |___ 7# \___|\___/|_| \_\_____| 8# 9# Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al. 10# 11# This software is licensed as described in the file COPYING, which 12# you should have received as part of this distribution. The terms 13# are also available at https://curl.se/docs/copyright.html. 14# 15# You may opt to use, copy, modify, merge, publish, distribute and/or sell 16# copies of the Software, and permit persons to whom the Software is 17# furnished to do so, under the terms of the COPYING file. 18# 19# This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY 20# KIND, either express or implied. 21# 22# SPDX-License-Identifier: curl 23# 24########################################################################### 25# 26# Experience has shown that the symbols-in-versions file is useful to 27# applications that want to build with a wide range of libcurl versions. It 28# is however easy to get it wrong and the source gets a bit messy with all the 29# fixed numerical comparisons. 30# 31# The point of this script is to provide an easy-to-use macro for libcurl- 32# using applications to do preprocessor checks for specific libcurl defines, 33# and yet make the code clearly show what the macro is used for. 34# 35# Run this script and generate libcurl-symbols.h and then use that header in 36# a fashion similar to: 37# 38# #include "libcurl-symbols.h" 39# 40# #if LIBCURL_HAS(CURLOPT_MUTE) 41# has mute 42# #else 43# no mute 44# #endif 45# 46# 47open F, "<symbols-in-versions"; 48 49sub str2num { 50 my ($str)=@_; 51 if($str =~ /([0-9]*)\.([0-9]*)\.*([0-9]*)/) { 52 return sprintf("0x%06x", $1<<16 | $2 << 8 | $3); 53 } 54} 55 56print <<EOS 57 58#include <curl/curl.h> 59 60#define LIBCURL_HAS(x) \\ 61 (defined(x ## _FIRST) && (x ## _FIRST <= LIBCURL_VERSION_NUM) && \\ 62 (!defined(x ## _LAST) || ( x ## _LAST >= LIBCURL_VERSION_NUM))) 63 64EOS 65 ; 66 67while(<F>) { 68 if(/^(CURL[^ ]*)[ \t]*(.*)/) { 69 my ($sym, $vers)=($1, $2); 70 71 my $intr; 72 my $rm; 73 my $dep; 74 75 # is there removed info? 76 if($vers =~ /([\d.]+)[ \t-]+([\d.-]+)[ \t]+([\d.]+)/) { 77 ($intr, $dep, $rm)=($1, $2, $3); 78 } 79 # is it a dep-only line? 80 elsif($vers =~ /([\d.]+)[ \t-]+([\d.]+)/) { 81 ($intr, $dep)=($1, $2); 82 } 83 else { 84 $intr = $vers; 85 } 86 87 my $inum = str2num($intr); 88 89 print <<EOS 90#define ${sym}_FIRST $inum /* Added in $intr */ 91EOS 92; 93 my $irm = str2num($rm); 94 if($rm) { 95 print <<EOS 96#define ${sym}_LAST $irm /* Last featured in $rm */ 97EOS 98; 99 } 100 101 } 102} 103
