Hello Matthew, On Fri, Jun 19, 2020 at 05:08:56PM +0100, Matthew Vernon wrote: > [can you reproduce with a little test program? but I think this is a build > issue not a pcre2 one at the moment]
The minimal program attached exhibits this behaviour as well.
In stable:
helge@samd:/tmp$ gcc -Duse_regexp=1 -g -O2 -c -o minimal.o minimal.c
helge@samd:/tmp$ gcc -g -O2 -lpcre2-8 -Wl,-z,relro -o minimal minimal.o
helge@samd:/tmp$ echo $?
0
In Sid chroot:
root@samd:/tmp/linuxinfo-3.2.0# gcc -Duse_regexp=1 -g -O2 -c -o minimal.o
minimal.c
root@samd:/tmp/linuxinfo-3.2.0# gcc -g -O2 -lpcre2-8 -Wl,-z,relro -o minimal
minimal.o
/usr/bin/ld: minimal.o: in function `regstrcmp':
/tmp/linuxinfo-3.2.0/minimal.c:50: undefined reference to `pcre2_compile_8'
/usr/bin/ld: /tmp/linuxinfo-3.2.0/minimal.c:78: undefined reference to
`pcre2_match_data_create_from_pattern_8'
/usr/bin/ld: /tmp/linuxinfo-3.2.0/minimal.c:80: undefined reference to
`pcre2_match_8'
/usr/bin/ld: /tmp/linuxinfo-3.2.0/minimal.c:107: undefined reference to
`pcre2_match_data_free_8'
/usr/bin/ld: /tmp/linuxinfo-3.2.0/minimal.c:108: undefined reference to
`pcre2_code_free_8'
/usr/bin/ld: /tmp/linuxinfo-3.2.0/minimal.c:102: undefined reference to
`pcre2_match_data_free_8'
/usr/bin/ld: /tmp/linuxinfo-3.2.0/minimal.c:103: undefined reference to
`pcre2_code_free_8'
/usr/bin/ld: /tmp/linuxinfo-3.2.0/minimal.c:63: undefined reference to
`pcre2_get_error_message_8'
collect2: error: ld returned 1 exit status
root@samd:/tmp/linuxinfo-3.2.0# echo $?
1
I'm not sure what else I could try. Thanks for any pointers.
Greetings
Helge
--
Dr. Helge Kreutzmann [email protected]
Dipl.-Phys. http://www.helgefjell.de/debian.php
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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/stat.h>
#include <sys/utsname.h>
#include <fcntl.h>
#include <ctype.h>
#include <sys/types.h>
#include <unistd.h>
#include <libintl.h>
#define _(String) gettext (String)
#define PCRE2_CODE_UNIT_WIDTH 8
#include <pcre2.h>
static char *models[] =
{
"K6 \\(166 - 266\\)", "K6",
"AMD-K6tm w/ mul", "K6 (MMX)",
"K6-2 \\(PR233 - PR333\\)", "K6-2"
};
int regstrcmp(const char *subjstring, const char *pstring)
{
pcre2_code *re;
PCRE2_SPTR pattern; /* PCRE2_SPTR is a pointer to unsigned code units of */
PCRE2_SPTR subject; /* the appropriate width (in this case, 8 bits). */
int errornumber;
int rc;
PCRE2_SIZE erroroffset;
size_t subject_length;
pcre2_match_data *match_data;
/* As pattern and subject are char arguments, they can be straightforwardly
cast to PCRE2_SPTR as we are working in 8-bit code units. */
pattern = (PCRE2_SPTR)pstring;
subject = (PCRE2_SPTR)subjstring;
subject_length = strlen((char *)subject);
/*************************************************************************
* Now we are going to compile the regular expression pattern, and handle *
* any errors that are detected. *
*************************************************************************/
re = pcre2_compile(
pattern, /* the pattern */
PCRE2_ZERO_TERMINATED, /* indicates pattern is zero-terminated */
0, /* default options */
&errornumber, /* for error number */
&erroroffset, /* for error offset */
NULL); /* use default compile context */
/* Compilation failed: print the error message and exit. */ /* This should not happen */
if (re == NULL)
{
PCRE2_UCHAR buffer[256];
pcre2_get_error_message(errornumber, buffer, sizeof(buffer));
printf(_("PCRE2 compilation failed at offset %d: %s\n"), (int)erroroffset,buffer);
return 1;
}
/*************************************************************************
* If the compilation succeeded, we call PCRE again, in order to do a *
* pattern match against the subject string. This does just ONE match. #
* Before running the match we must set up a match_data block for holding *
* the result. #
*************************************************************************/
/* Using this function ensures that the block is exactly the right size for
the number of capturing parentheses in the pattern. */
match_data = pcre2_match_data_create_from_pattern(re, NULL);
rc = pcre2_match(
re, /* the compiled pattern */
subject, /* the subject string */
subject_length, /* the length of the subject */
0, /* start at offset 0 in the subject */
0, /* default options */
match_data, /* block for storing the result */
NULL); /* use default match context */
/* Matching failed: handle error cases */
if (rc < 0)
{
switch(rc)
{
// case PCRE2_ERROR_NOMATCH: printf("No match\n"); break;
case PCRE2_ERROR_NOMATCH: break;
/*
Handle other special cases if you like
*/
default: printf(_("Matching error %d\n"), rc); break;
}
pcre2_match_data_free(match_data); /* Release memory used for the match */
pcre2_code_free(re); /* data and the compiled pattern. */
return 1;
}
pcre2_match_data_free(match_data); /* Release the memory that was used */
pcre2_code_free(re); /* for the match data and the pattern. */
return 0; /* Exit the function. */
}
int main(int argc, char *argv[])
{
char temp_string2[BUFSIZ];
if (regstrcmp(temp_string2, models[3]))
{
printf("Output");
}
}
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