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我一直在安裝libsasl2（賽勒斯SASL）的版本有一些麻煩。OSX Yosemite上的libsasl2破解了嗎？缺少sasl_client_done
特別是，似乎本地頭文件和sasl_version報告了版本2.1.26，但沒有爲全局函數sasl_client_done提供符號。
我敢肯定，我應該有一個符號，因爲：
- 它的存在在提供SASL/sasl.h頭
- 的cyrsus SASL NEWS文件列表「實現sasl_client_done（）/sasl_server_done（）」作爲2.1.24功能
- 它的存在處處提供2.1.26外約塞米蒂
的對於再現：
- 注意，下面將打印樣品
- 「IMPL： '賽勒斯SASL'，版本：33619994，主要：2，次要：1，步驟：26」
- 樣品編譯和執行在Linux在取消
的註釋掉的代碼產生的優勝美地
Undefined symbols for architecture x86_64:
"_sasl_client_done", referenced from:
_main in foo-072675.o
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
調用編譯器：
clang -Wall -Werror -lsasl2 -o foo foo.c -v
與鐺-v：
Apple LLVM version 6.0 (clang-600.0.54) (based on LLVM 3.5svn)
Target: x86_64-apple-darwin14.0.0
Thread model: posix
"/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang" -cc1 -triple x86_64-apple-macosx10.10.0 -emit-obj -mrelax-all -disable-free -disable-llvm-verifier -main-file-name foo.c -mrelocation-model pic -pic-level 2 -mdisable-fp-elim -masm-verbose -munwind-tables -target-cpu core2 -target-linker-version 241.9 -v -resource-dir /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../lib/clang/6.0 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.10.sdk -Wall -Werror -fdebug-compilation-dir /Users/jcarey/work -ferror-limit 19 -fmessage-length 0 -stack-protector 1 -mstackrealign -fblocks -fobjc-runtime=macosx-10.10.0 -fencode-extended-block-signature -fdiagnostics-show-option -vectorize-slp -o /var/folders/wq/jypwqgv976n0db5l5qxw900r0000gq/T/foo-92054e.o -x c foo.c
clang -cc1 version 6.0 based upon LLVM 3.5svn default target x86_64-apple-darwin14.0.0
ignoring nonexistent directory "/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.10.sdk/usr/local/include"
ignoring nonexistent directory "/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.10.sdk/Library/Frameworks"
#include "..." search starts here:
#include <...> search starts here:
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../lib/clang/6.0/include
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.10.sdk/usr/include
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.10.sdk/System/Library/Frameworks (framework directory)
End of search list.
"/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ld" -demangle -dynamic -arch x86_64 -macosx_version_min 10.10.0 -syslibroot /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.10.sdk -o foo -lsasl2 /var/folders/wq/jypwqgv976n0db5l5qxw900r0000gq/T/foo-92054e.o -lSystem /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../lib/clang/6.0/lib/darwin/libclang_rt.osx.a
Undefined symbols for architecture x86_64:
"_sasl_client_done", referenced from:
_main in foo-92054e.o
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
和代碼的問題：
#include <sasl/sasl.h>
#include <stdio.h>
#include <stdint.h>
int main(int argc, char ** argv) {
const char *impl;
int version;
uint32_t buf;
uint16_t major;
uint8_t minor;
uint8_t step;
sasl_version(&impl, &version);
buf = version;
major = buf >> 24;
minor = (buf << 8) >> 24;
step = (buf << 24) >> 24;
printf("impl: '%s', version: %d, major: %d, minor: %d, step: %d\n", impl, version, major, minor, step);
/*
{
int (* scd)(void);
scd = &sasl_client_done;
printf("sasl_client_done: %p\n", scd);
}
*/
return 0;
}
我想的東西的扭曲與方式cyrus sasl被包裝爲優勝美地（使用從小牛符號列表也許？）。
您正在尋找的實用程序是nm。運行'nm/usr/lib/libsasl2.dylib'查看所有符號。你會發現它確實沒有在約塞米蒂有'sasl_client_done'。該庫被命名爲'libsasl2.2 *'，但顯然這並不意味着它對於OS X來說並不是真正的'2.1.x'版本。 – indiv 2014-10-31 00:57:08
我對nm很熟悉，但是認爲鏈接失敗與報告major.minor.step sasl_version（）2.1.26出相同的鏈接鏈更有用。 在這個世界裏，頭文件與發佈的dylib（sasl_version return（<2.1.24））不匹配，然後是我認爲我在其中的那個（他們沒有遵守LIBSASL_API導出宏）。 nm無法區分 – hanumantmk 2014-10-31 17:01:58