--- /dev/null
+Taken from OpenSUSE 11 rpm source file - RP 26/8/08
+
+Add support for weak dependencies:
+
+A) use RPMTAG_SUGGESTS and RPMTAG_ENHANCES to store them.
+
+ This is different to upstream, which uses RPMSENSE_MISSINGOK
+ and RPMTAG_REQUIRES/RPMTAG_PROVIDES instead. I chose different
+ tags because I wanted to be compatible. The point is that
+ applications that don't know about the new MISSINGOK semantics
+ will mis-interpret the provides/requires otherwise, which
+ I deemed to risky.
+
+B) use RPMSENSE_STRONG to support a "strong" version, "Recommends"
+ instead of "Suggests" and "Supplements" instead of "Enhances".
+
+Needs extcond.diff for query operations.
+
+Index: build/parsePreamble.c
+===================================================================
+--- build/parsePreamble.c.orig 2008-04-01 08:28:21.000000000 +0100
++++ build/parsePreamble.c 2008-08-26 16:58:09.000000000 +0100
+@@ -129,6 +129,8 @@
+ { "post", RPMSENSE_SCRIPT_POST },
+ { "rpmlib", RPMSENSE_RPMLIB },
+ { "verify", RPMSENSE_SCRIPT_VERIFY },
++ { "hint", RPMSENSE_MISSINGOK },
++ { "strong", RPMSENSE_STRONG },
+ { NULL, 0 }
+ };
+
+@@ -140,6 +142,8 @@
+ { "build", RPMSENSE_SCRIPT_BUILD },
+ { "install", RPMSENSE_SCRIPT_INSTALL },
+ { "clean", RPMSENSE_SCRIPT_CLEAN },
++ { "hint", RPMSENSE_MISSINGOK },
++ { "strong", RPMSENSE_STRONG },
+ { NULL, 0 }
+ };
+
+@@ -692,6 +696,18 @@
+ if ((rc = parseRCPOT(spec, pkg, field, tag, 0, tagflags)))
+ return rc;
+ break;
++ case RPMTAG_SUGGESTSFLAGS:
++ case RPMTAG_ENHANCESFLAGS:
++ case RPMTAG_BUILDSUGGESTS:
++ case RPMTAG_BUILDENHANCES:
++ tagflags = RPMSENSE_MISSINGOK;
++ if (macro && (!strcmp(macro, "recommends") || !strcmp(macro, "buildrecommends")))
++ tagflags |= RPMSENSE_STRONG;
++ if (macro && (!strcmp(macro, "supplements") || !strcmp(macro, "buildsupplements")))
++ tagflags |= RPMSENSE_STRONG;
++ if ((rc = parseRCPOT(spec, pkg, field, tag, 0, tagflags)))
++ return rc;
++ break;
+ case RPMTAG_EXCLUDEARCH:
+ case RPMTAG_EXCLUSIVEARCH:
+ case RPMTAG_EXCLUDEOS:
+@@ -783,6 +799,14 @@
+ {RPMTAG_DISTTAG, 0, 0, 0, "disttag"},
+ {RPMTAG_CVSID, 0, 0, 0, "cvsid"},
+ {RPMTAG_SVNID, 0, 0, 0, "svnid"},
++ {RPMTAG_SUGGESTSFLAGS, 0, 0, 0, "recommends"},
++ {RPMTAG_SUGGESTSFLAGS, 0, 0, 0, "suggests"},
++ {RPMTAG_ENHANCESFLAGS, 0, 0, 0, "supplements"},
++ {RPMTAG_ENHANCESFLAGS, 0, 0, 0, "enhances"},
++ {RPMTAG_BUILDSUGGESTS, 0, 0, 0, "buildrecommends"},
++ {RPMTAG_BUILDSUGGESTS, 0, 0, 0, "buildsuggests"},
++ {RPMTAG_BUILDENHANCES, 0, 0, 0, "buildsupplements"},
++ {RPMTAG_BUILDENHANCES, 0, 0, 0, "buildenhances"},
+ /*@-nullassign@*/ /* LCL: can't add null annotation */
+ {0, 0, 0, 0, 0}
+ /*@=nullassign@*/
+Index: build/parseReqs.c
+===================================================================
+--- build/parseReqs.c.orig 2008-04-01 08:28:21.000000000 +0100
++++ build/parseReqs.c 2008-08-26 16:58:09.000000000 +0100
+@@ -85,6 +85,14 @@
+ tagflags |= RPMSENSE_ANY;
+ h = spec->buildRestrictions;
+ break;
++ case RPMTAG_SUGGESTSFLAGS:
++ case RPMTAG_ENHANCESFLAGS:
++ h = pkg->header;
++ break;
++ case RPMTAG_BUILDSUGGESTS:
++ case RPMTAG_BUILDENHANCES:
++ h = spec->buildRestrictions;
++ break;
+ default:
+ case RPMTAG_REQUIREFLAGS:
+ tagflags |= RPMSENSE_ANY;
+Index: build/reqprov.c
+===================================================================
+--- build/reqprov.c.orig 2008-04-01 08:28:21.000000000 +0100
++++ build/reqprov.c 2008-08-26 16:58:09.000000000 +0100
+@@ -48,6 +48,16 @@
+ flagtag = RPMTAG_TRIGGERFLAGS;
+ indextag = RPMTAG_TRIGGERINDEX;
+ extra = Flags & RPMSENSE_TRIGGER;
++ } else if (tagN == RPMTAG_SUGGESTSFLAGS || tagN == RPMTAG_BUILDSUGGESTS) {
++ nametag = RPMTAG_SUGGESTSNAME;
++ versiontag = RPMTAG_SUGGESTSVERSION;
++ flagtag = RPMTAG_SUGGESTSFLAGS;
++ extra = Flags & _ALL_REQUIRES_MASK;
++ } else if (tagN == RPMTAG_ENHANCESFLAGS || tagN == RPMTAG_BUILDENHANCES) {
++ nametag = RPMTAG_ENHANCESNAME;
++ versiontag = RPMTAG_ENHANCESVERSION;
++ flagtag = RPMTAG_ENHANCESFLAGS;
++ extra = Flags & _ALL_REQUIRES_MASK;
+ } else {
+ nametag = RPMTAG_REQUIRENAME;
+ versiontag = RPMTAG_REQUIREVERSION;
+Index: build/rpmfc.c
+===================================================================
+--- build/rpmfc.c.orig 2008-04-01 08:28:21.000000000 +0100
++++ build/rpmfc.c 2008-08-26 16:58:09.000000000 +0100
+@@ -1385,6 +1385,12 @@
+ { "Obsoletes", { "%{?__find_obsoletes}", NULL, NULL, NULL },
+ RPMTAG_OBSOLETENAME, RPMTAG_OBSOLETEVERSION, RPMTAG_OBSOLETEFLAGS,
+ 0, -1 },
++ { "Enhances", { "%{?__find_enhances}", NULL, NULL, NULL },
++ RPMTAG_ENHANCESNAME, RPMTAG_ENHANCESVERSION, RPMTAG_ENHANCESFLAGS,
++ RPMSENSE_STRONG, RPMSENSE_STRONG },
++ { "Supplements", { "%{?__find_supplements}", NULL, NULL, NULL },
++ RPMTAG_ENHANCESNAME, RPMTAG_ENHANCESVERSION, RPMTAG_ENHANCESFLAGS,
++ RPMSENSE_STRONG, 0 },
+ { NULL, { NULL, NULL, NULL, NULL }, 0, 0, 0, 0, 0 }
+ };
+
+@@ -1480,6 +1486,14 @@
+ failnonzero = 0;
+ tagflags = RPMSENSE_FIND_REQUIRES;
+ /*@switchbreak@*/ break;
++ case RPMTAG_ENHANCESFLAGS:
++ if (!pkg->autoProv)
++ continue;
++ failnonzero = 0;
++ tagflags = RPMSENSE_FIND_REQUIRES | RPMSENSE_MISSINGOK;
++ if (strcmp(dm->msg, "Supplements") == 0)
++ tagflags |= RPMSENSE_STRONG;
++ /*@switchbreak@*/ break;
+ default:
+ continue;
+ /*@notreached@*/ /*@switchbreak@*/ break;
+Index: lib/rpmlib.h
+===================================================================
+--- lib/rpmlib.h.orig 2008-04-01 08:28:22.000000000 +0100
++++ lib/rpmlib.h 2008-08-26 17:00:37.000000000 +0100
+@@ -530,7 +530,7 @@
+ RPMSENSE_TRIGGERPREIN = (1 << 25), /*!< @todo Implement %triggerprein. */
+ /*@=enummemuse@*/
+ RPMSENSE_KEYRING = (1 << 26),
+- RPMSENSE_PATCHES = (1 << 27),
++ RPMSENSE_STRONG = (1 << 27),
+ RPMSENSE_CONFIG = (1 << 28)
+ } rpmsenseFlags;
+
+Index: python/rpmmodule.c
+===================================================================
+--- python/rpmmodule.c.orig 2008-04-01 08:28:22.000000000 +0100
++++ python/rpmmodule.c 2008-08-26 16:58:09.000000000 +0100
+@@ -433,7 +433,7 @@
+ REGISTER_ENUM(RPMSENSE_RPMLIB);
+ REGISTER_ENUM(RPMSENSE_TRIGGERPREIN);
+ REGISTER_ENUM(RPMSENSE_KEYRING);
+- REGISTER_ENUM(RPMSENSE_PATCHES);
++ REGISTER_ENUM(RPMSENSE_STRONG);
+ REGISTER_ENUM(RPMSENSE_CONFIG);
+
+ REGISTER_ENUM(RPMTRANS_FLAG_TEST);
+Index: lib/rpmds.c
+===================================================================
+--- lib/rpmds.c.orig 2008-04-01 08:28:22.000000000 +0100
++++ lib/rpmds.c 2008-08-26 16:58:09.000000000 +0100
+@@ -320,6 +320,11 @@
+ tagEVR = RPMTAG_TRIGGERVERSION;
+ tagF = RPMTAG_TRIGGERFLAGS;
+ } else
++ if (tagN == RPMTAG_ENHANCESNAME) {
++ Type = "Enhances";
++ tagEVR = RPMTAG_ENHANCESVERSION;
++ tagF = RPMTAG_ENHANCESFLAGS;
++ } else
+ goto exit;
+
+ /*@-branchstate@*/
+Index: rpmpopt.in
+===================================================================
+--- rpmpopt.in.orig 2008-04-01 08:28:22.000000000 +0100
++++ rpmpopt.in 2008-08-26 16:58:09.000000000 +0100
+@@ -68,6 +68,22 @@
+ --POPTdesc=$"list capabilities required by package(s)"
+ rpm alias -R --requires
+
++rpm alias --suggests --qf \
++ "[%|SUGGESTSFLAGS:depflag_strong?{}:{%{SUGGESTSNAME} %{SUGGESTSFLAGS:depflags} %{SUGGESTSVERSION}\n}|]" \
++ --POPTdesc=$"list capabilities this package suggests"
++
++rpm alias --recommends --qf \
++ "[%|SUGGESTSFLAGS:depflag_strong?{%{SUGGESTSNAME} %{SUGGESTSFLAGS:depflags} %{SUGGESTSVERSION}\n}|]" \
++ --POPTdesc=$"list capabilities this package recommends"
++
++rpm alias --enhances --qf \
++ "[%|ENHANCESFLAGS:depflag_strong?{}:{%{ENHANCESNAME} %{ENHANCESFLAGS:depflags} %{ENHANCESVERSION}\n}|]" \
++ --POPTdesc=$"list capabilities this package enhances"
++
++rpm alias --supplements --qf \
++ "[%|ENHANCESFLAGS:depflag_strong?{%{ENHANCESNAME} %{ENHANCESFLAGS:depflags} %{ENHANCESVERSION}\n}|]" \
++ --POPTdesc=$"list capabilities this package supplements"
++
+ rpm alias --info --qf 'Name : %-27{NAME} Relocations: %|PREFIXES?{[%{PREFIXES} ]}:{(not relocatable)}|\n\
+ Version : %-27{VERSION} Vendor: %{VENDOR}\n\
+ Release : %-27{RELEASE} Build Date: %{BUILDTIME:date}\n\
+@@ -351,6 +367,22 @@
+ --POPTdesc=$"list capabilities required by package(s)"
+ rpmq alias -R --requires
+
++rpmq alias --suggests --qf \
++ "[%|SUGGESTSFLAGS:depflag_strong?{}:{%{SUGGESTSNAME} %{SUGGESTSFLAGS:depflags} %{SUGGESTSVERSION}\n}|]" \
++ --POPTdesc=$"list capabilities this package suggests"
++
++rpmq alias --recommends --qf \
++ "[%|SUGGESTSFLAGS:depflag_strong?{%{SUGGESTSNAME} %{SUGGESTSFLAGS:depflags} %{SUGGESTSVERSION}\n}|]" \
++ --POPTdesc=$"list capabilities this package recommends"
++
++rpmq alias --enhances --qf \
++ "[%|ENHANCESFLAGS:depflag_strong?{}:{%{ENHANCESNAME} %{ENHANCESFLAGS:depflags} %{ENHANCESVERSION}\n}|]" \
++ --POPTdesc=$"list capabilities this package enhances"
++
++rpmq alias --supplements --qf \
++ "[%|ENHANCESFLAGS:depflag_strong?{%{ENHANCESNAME} %{ENHANCESFLAGS:depflags} %{ENHANCESVERSION}\n}|]" \
++ --POPTdesc=$"list capabilities this package supplements"
++
+ rpmq alias --info --qf 'Name : %-27{NAME} Relocations: %|PREFIXES?{[%{PREFIXES} ]}:{(not relocatable)}|\n\
+ Version : %-27{VERSION} Vendor: %{VENDOR}\n\
+ Release : %-27{RELEASE} Build Date: %{BUILDTIME:date}\n\
+@@ -452,6 +484,22 @@
+ --POPTdesc=$"list capabilities required by package(s)"
+ rpmquery alias -R --requires
+
++rpmquery alias --suggests --qf \
++ "[%|SUGGESTSFLAGS:depflag_strong?{}:{%{SUGGESTSNAME} %{SUGGESTSFLAGS:depflags} %{SUGGESTSVERSION}\n}|]" \
++ --POPTdesc=$"list capabilities this package suggests"
++
++rpmquery alias --recommends --qf \
++ "[%|SUGGESTSFLAGS:depflag_strong?{%{SUGGESTSNAME} %{SUGGESTSFLAGS:depflags} %{SUGGESTSVERSION}\n}|]" \
++ --POPTdesc=$"list capabilities this package recommends"
++
++rpmquery alias --enhances --qf \
++ "[%|ENHANCESFLAGS:depflag_strong?{}:{%{ENHANCESNAME} %{ENHANCESFLAGS:depflags} %{ENHANCESVERSION}\n}|]" \
++ --POPTdesc=$"list capabilities this package enhances"
++
++rpmquery alias --supplements --qf \
++ "[%|ENHANCESFLAGS:depflag_strong?{%{ENHANCESNAME} %{ENHANCESFLAGS:depflags} %{ENHANCESVERSION}\n}|]" \
++ --POPTdesc=$"list capabilities this package supplements"
++
+ rpmquery alias --info --qf 'Name : %-27{NAME} Relocations: %|PREFIXES?{[%{PREFIXES} ]}:{(not relocatable)}|\n\
+ Version : %-27{VERSION} Vendor: %{VENDOR}\n\
+ Release : %-27{RELEASE} Build Date: %{BUILDTIME:date}\n\
+Index: lib/formats.c
+===================================================================
+--- lib/formats.c.orig 2008-04-01 08:28:22.000000000 +0100
++++ lib/formats.c 2008-08-26 16:58:09.000000000 +0100
+@@ -543,6 +543,38 @@
+ return val;
+ }
+
++static /*@only@*/ char * depflag_strongFormat(int_32 type, const void * data,
++ char * formatPrefix, int padding, /*@unused@*/ int element)
++ /*@modifies formatPrefix @*/
++ /*@requires maxRead(data) >= 0 @*/
++{
++ char * val;
++ char buf[10];
++ int anint;
++
++ if (type != RPM_INT32_TYPE) {
++ val = xstrdup(_("(not a number)"));
++ } else {
++ anint = *((int_32 *) data);
++ buf[0] = '\0';
++
++/*@-boundswrite@*/
++ if (anint & RPMSENSE_STRONG)
++ strcat(buf, "strong");
++/*@=boundswrite@*/
++
++ val = xmalloc(7 + padding);
++/*@-boundswrite@*/
++ strcat(formatPrefix, "s");
++/*@=boundswrite@*/
++ /*@-formatconst@*/
++ sprintf(val, formatPrefix, buf);
++ /*@=formatconst@*/
++ }
++
++ return val;
++}
++
+ /**
+ * Retrieve mounted file system paths.
+ * @param h header
+@@ -1171,6 +1203,7 @@
+ { HEADER_EXT_FORMAT, "base64", { base64Format } },
+ { HEADER_EXT_FORMAT, "pgpsig", { pgpsigFormat } },
+ { HEADER_EXT_FORMAT, "depflags", { depflagsFormat } },
++ { HEADER_EXT_FORMAT, "depflag_strong", { depflag_strongFormat } },
+ { HEADER_EXT_FORMAT, "fflags", { fflagsFormat } },
+ { HEADER_EXT_FORMAT, "perms", { permsFormat } },
+ { HEADER_EXT_FORMAT, "permissions", { permsFormat } },
