lin-epics-modules/require
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allow backward compatible minor versions in require

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zimoch
2007-04-11 14:28:34 +00:00
parent 056c3ef8e3
commit 9f647b322c
1 changed files with 15 additions and 4 deletions
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require.c
+15 -4
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@@ -43,6 +43,12 @@ int require(char* lib, char* version)
char dbdname[256];
char depname[256];
/* try to find module in local /bin directory first, then in path
prefer *Lib.munch file over *Lib file
check for dependencies in *.dep file
load *.dbd file if it exists
*/
/* first try local library */
if (version)
{
@@ -165,17 +171,22 @@ int require(char* lib, char* version)
/* Library already loaded. Check Version. */
if (version && strcmp(loaded, version) != 0)
{
/* non-numerical versions must match exactly
numerical versions must have exact match in major version and
backward-compatible match in minor version and patch level
*/
int lmajor, lminor, lpatch, lmatches;
int major, minor, patch, matches;
lmatches = sscanf(loaded, "%d.%d.%d", &lmajor, &lminor, &lpatch);
matches = sscanf(version, "%d.%d.%d", &major, &minor, &patch);
if (matches == 0 || lmatches == 0 /* non-numerical version*/
if (((matches == 0 || lmatches == 0) &&
strcmp(loaded, version) != 0)
|| major != lmajor
|| (matches >= 2 && minor != lminor)
|| (matches > 2 && patch != lpatch))
|| (matches >= 2 && minor > lminor)
|| (matches > 2 && minor == lminor && patch > lpatch))
{
printf("Version conflict between requested %s\n"
printf("Conflict between requested version %s\n"
"and already loaded version %s.\n"
"Aborting startup stript.\n",
lib, loaded);