Error: 'alpm_db_register_local' was not declared in this scope

Question

This is why I wish there was an actual API reference for ALPM instead of forcing developers to fend for themselves in a near-undocumented mess of a library.
That said, I need some help. I have the correct #includes in my code:
#include <alpm.h>
#include <alpm_list.h>
But apparently the compiler can't see what is supposed to be provided by the very first (I think?) header. My source is simple right now since I've mostly just begun my project:
#include <alpm.h>
#include <alpm_list.h>
#include "../function/pacman.h"
bool initALPM()
if(alpm_initialize()<0)
return false;
alpm_option_set_dbpath("/var/lib/pacman");
db = alpm_db_register_local();
return true;
bool releaseALPM()
if(alpm_release()<0)
return false;
return true;
std::vector<std::string> getPackageList()
std::vector<pmdb_t*> sync;
pmdb_t* local;
std::vector<std::string> packs;
return packs;
Any idea what I'm doing wrong in this? For all I can figure, I *should not* be having troubles with my compiler finding that function.
Also, any hint as to how I could get a list of "sync" databases?

Answer 1

If you were still able to find that function, you'd be using pacman 3.4. alpm_db_register_local was removed for 3.5.0. If you read the patch notes, you'll see that alpm_initialize() takes care of that for you. I'm also not sure how well alpm will play with c++ since it doesn't have the extern "C" decl in the header...
By default, no syncs are registered. pacman parses its own config file and registers the DBs it finds declared there with alpm. An example in C...
#include <stdio.h>
#include <alpm.h>
static const char *trees[] = {
"testing",
"core",
"extra",
"community",
NULL
int main(void) {
const char **tree;
pmdb_t *local;
alpm_list_t *i;
/* initialize -- this registers localdb for you */
alpm_initialize();
/* barebones setup */
alpm_option_set_root("/");
alpm_option_set_dbpath("/var/lib/pacman");
/* register syncs */
for (tree = trees; *tree; tree++) {
alpm_db_register_sync(*tree);
/* iterate over registered syncs */
printf("--- sync DBs -----------------\n");
for (i = alpm_option_get_syncdbs(); i; i = alpm_list_next(i)) {
pmdb_t *sync = alpm_list_getdata(i);
printf("%s\n", alpm_db_get_name(sync));
putchar('\n');
/* iterate over local database */
printf("--- local packages -----------\n");
local = alpm_option_get_localdb();
for (i = alpm_db_get_pkgcache(local); i; i = alpm_list_next(i)) {
pmpkg_t *pkg = alpm_list_getdata(i);
printf("%s\n", alpm_pkg_get_name(pkg));
putchar('\n');
/* cleanup */
alpm_release();
return 0;
Last edited by falconindy (2011-04-10 03:08:29)