我正在尝试使用xlC编译器在AIX上编译boost C++库的正则表达式部分,并将其用作64位动态库,因为我需要比较几个C++正则表达式库和内置解决方案的性能,并且boost似乎是一个可行的选择。
以下是我的确切操作系统和编译器版本:
$ uname -a
AIX host_name 1 7 00F9A2144C00
$ xlC -qversion
IBM XL C/C++ for AIX, V13.1.2 (5725-C72, 5765-J07)
Version: 13.01.0002.0000
由于我没有root权限,无法安装boost库,我只是试图将regex部分编译成共享对象文件,并获取测试应用程序所需的所有头文件。我尝试编译最新可用版本(1.59.0),以及版本1.55.0,因为我发现IBM已发布了一个boost源代码补丁:http://www-01.ibm.com/support/docview.wss?uid=swg27042921。
我使用以下命令编译boost,并将头文件和共享对象文件复制到我的开发文件夹中:
bootstrap.sh --with-toolset=vacpp --prefix=/my/user/directory --exec-prefix=/my/user/directory
./b2 address-model=64 cxxflags=-q64 cflags=-q64
b2 tools/bcp
./dist/bin/bcp boost/regex.hpp /my/include/directory
cp stage/lib/libboost_regex.so /my/library/directory
我知道我可以添加
--with-libraries=regex
标记来仅编译正则表达式部分,但这与我的问题无关。使用两个版本,无论是否修补了boost源代码,我都遇到了相同的问题。
首先:我已经编译了一些库,并将它们链接到我的简单测试应用程序,例如PCRE C++正则表达式库。当我尝试链接boost正则表达式库时,使用
-lboost_regex
编译标志,我会收到以下错误消息:ld: 0706-006 Cannot find or open library file: -l boost_regex
ld:open(): No such file or directory
make: The error code from the last command is 255.
这个问题可以通过添加
-brtl
编译标志来解决。据我所知,只有在尝试链接静态库时才需要使用它,因此对我来说,libboost_regex.so实际上应该是libboost_regex.a。第二个问题:当我在代码中添加
#include "boost/regex.hpp"
这行时,我会收到编译错误。"/opt/IBM/xlC/13.1.2/include/xtr1common", line 217.19: 1540-0130 (S) "false_type" is not declared.
"/opt/IBM/xlC/13.1.2/include/xtr1common", line 223.19: 1540-0130 (S) "true_type" is not declared.
"/opt/IBM/xlC/13.1.2/include/xtr1common", line 229.19: 1540-0130 (S) "true_type" is not declared.
"/opt/IBM/xlC/13.1.2/include/xtr1common", line 235.19: 1540-0130 (S) "true_type" is not declared.
"/opt/IBM/xlC/13.1.2/include/xtr1common", line 244.11: 1540-0130 (S) "false_type" is not declared.
"/opt/IBM/xlC/13.1.2/include/xtr1common", line 250.11: 1540-0130 (S) "true_type" is not declared.
make: The error code from the last command is 1.
我的测试应用非常简单。以下是我的Makefile文件的内容:
all:
/opt/IBM/xlC/13.1.2/bin/xlC -q64 -Iinclude -Llibs -lpcrecpp main.cpp -o regexp_test
clean:
rm regexp_test
这是我的基础测试应用程序的源代码:
#include <iostream>
#include <string.h>
#ifndef __IBMCPP_TR1__
#define __IBMCPP_TR1__ 1
#include <regex>
#undef __IBMCPP_TR1__
#endif
#define __IBMCPP_TR1__ 1
/* Regular expression libraries to be included */
#include <sys/types.h>
#include <regex.h>
#include "pcrecpp.h"
// #include "boost/regex.hpp"
#include "deelx.h"
int main(int argc, char **argv)
{
if(argc != 4){
std::cerr << "Use: ./regexp_test <posix|tr1|pcre|deelx> value regexp" << std::endl;
return 1;
}
int status;
char buffer[256], regexp[256];
snprintf(buffer,sizeof(buffer),argv[2]);
snprintf(regexp,sizeof(regexp),argv[3]);
std::string buffer_string = buffer;
bool match = false;
if(strcmp(argv[1],"posix")==0){
regex_t comp;
if (regcomp(&comp, regexp, REG_EXTENDED) != 0) {
std::cerr << "The regular expression '" << regexp << "' could not be compiled!" << std::endl;
return 1;
} else {
status = regexec(&comp, buffer, (size_t) 0, NULL, 0);
regfree(&comp);
if (status == 0) {
match = true;
}
}
} else if(strcmp(argv[1],"tr1")==0){
try {
std::tr1::smatch matches;
std::tr1::regex rgx(regexp);
status = std::tr1::regex_search(buffer_string, matches, rgx);
if(status){
match = true;
}
}
catch(std::tr1::regex_error& re)
{
std::cerr << "TR1 exception caught!" << std::endl;
}
} else if(strcmp(argv[1],"pcre")==0){
pcrecpp::RE re(regexp);
if(re.PartialMatch(buffer)){
match = true;
}
} else if(strcmp(argv[1],"deelx")==0){
static CRegexpT <char> deelx_regexp(regexp, IGNORECASE | MULTILINE);
MatchResult result = deelx_regexp.Match(buffer);
if(result.IsMatched()){
match = true;
}
} else {
std::cerr << "Use: ./regexp_test <posix|tr1|pcre|deelx> value regexp" << std::endl;
return 1;
}
if (!match) {
std::cout << "The regular expression '" << regexp << "' does NOT match the value '" << buffer << "'." << std::endl;
} else {
std::cout << "The regular expression '" << regexp << "' matches the value '" << buffer << "'." << std::endl;
}
return 0;
}
这些问题如何解决?欢迎提供任何提示或建议。