From 112a2bc026f48bf9453c2bb8766f730e8c0d1bc9 Mon Sep 17 00:00:00 2001
From: midipix <writeonce@midipix.org>
Date: Sun, 24 Apr 2016 09:14:59 -0400
Subject: execution context: link mode: install mode: added -release semantics
 support.

---
 src/logic/slbt_exec_ctx.c     | 12 +++++++++++
 src/logic/slbt_exec_install.c | 12 ++++++++++-
 src/logic/slbt_exec_link.c    | 49 ++++++++++++++++++++++++++++++++++++-------
 3 files changed, 64 insertions(+), 9 deletions(-)

(limited to 'src/logic')

diff --git a/src/logic/slbt_exec_ctx.c b/src/logic/slbt_exec_ctx.c
index 23cae68..17c6cd8 100644
--- a/src/logic/slbt_exec_ctx.c
+++ b/src/logic/slbt_exec_ctx.c
@@ -357,6 +357,18 @@ int  slbt_get_exec_ctx(
 				dctx->cctx->verinfo.revision,
 				dctx->cctx->settings.impsuffix);
 		ch++;
+
+		/* relfilename */
+		if (dctx->cctx->release) {
+			ictx->ctx.relfilename = ch;
+			ch += sprintf(ch,"%s%s%s-%s%s",
+					ictx->ctx.ldirname,
+					dsoprefix,
+					dctx->cctx->libname,
+					dctx->cctx->release,
+					dctx->cctx->settings.dsosuffix);
+			ch++;
+		}
 	}
 
 	/* linking: exefilename */
diff --git a/src/logic/slbt_exec_install.c b/src/logic/slbt_exec_install.c
index a595774..0eddd6d 100644
--- a/src/logic/slbt_exec_install.c
+++ b/src/logic/slbt_exec_install.c
@@ -233,6 +233,7 @@ static int slbt_exec_install_entry(
 	char		lasource[PATH_MAX];
 	bool		fexe = false;
 	bool		fpe;
+	bool		frelease;
 	struct stat	st;
 
 	/* executable wrapper? */
@@ -297,9 +298,15 @@ static int slbt_exec_install_entry(
 			dest ? (char *)dest->arg : (char *)last->arg))
 		return -1;
 
-	/* libfoo.a --> libfoo.so */
+	/* dot/suffix */
 	strcpy(slnkname,srcfile);
 	dot = strrchr(slnkname,'.');
+
+	/* libfoo.a --> libfoo.so.release */
+	sprintf(dot,"%s.release",dctx->cctx->settings.dsosuffix);
+	frelease = stat(slnkname,&st) ? false : true;
+
+	/* libfoo.a --> libfoo.so */
 	strcpy(dot,dctx->cctx->settings.dsosuffix);
 
 	/* PE support: does .libs/libfoo.so.def exist? */
@@ -377,6 +384,9 @@ static int slbt_exec_install_entry(
 			false))
 		return -1;
 
+	if (frelease)
+		return 0;
+
 	/* libfoo.so.x.y.z --> libfoo.so.x */
 	strcpy(slnkname,target);
 
diff --git a/src/logic/slbt_exec_link.c b/src/logic/slbt_exec_link.c
index 72e9880..0386941 100644
--- a/src/logic/slbt_exec_link.c
+++ b/src/logic/slbt_exec_link.c
@@ -588,7 +588,8 @@ static int slbt_exec_link_create_archive(
 static int slbt_exec_link_create_library(
 	const struct slbt_driver_ctx *	dctx,
 	struct slbt_exec_ctx *		ectx,
-	const char *			dsofilename)
+	const char *			dsofilename,
+	const char *			relfilename)
 {
 	char ** parg;
 	char	cwd    [PATH_MAX];
@@ -630,6 +631,17 @@ static int slbt_exec_link_create_library(
 				>= sizeof(soname))
 			return -1;
 
+		*ectx->soname  = "-Wl,-soname";
+		*ectx->lsoname = soname;
+	} else if (relfilename) {
+		if ((size_t)snprintf(soname,sizeof(soname),"-Wl,%s%s-%s%s",
+					dctx->cctx->settings.dsoprefix,
+					dctx->cctx->libname,
+					dctx->cctx->release,
+					dctx->cctx->settings.dsosuffix)
+				>= sizeof(soname))
+			return -1;
+
 		*ectx->soname  = "-Wl,-soname";
 		*ectx->lsoname = soname;
 	}
@@ -654,7 +666,9 @@ static int slbt_exec_link_create_library(
 	}
 
 	/* output */
-	if (dctx->cctx->drvflags & SLBT_DRIVER_AVOID_VERSION) {
+	if (relfilename) {
+		strcpy(output,relfilename);
+	} else if (dctx->cctx->drvflags & SLBT_DRIVER_AVOID_VERSION) {
 		strcpy(output,dsofilename);
 	} else {
 		if ((size_t)snprintf(output,sizeof(output),"%s.%d.%d.%d",
@@ -841,11 +855,21 @@ static int slbt_exec_link_create_library_symlink(
 	char	target[PATH_MAX];
 	char	lnkname[PATH_MAX];
 
-	sprintf(target,"%s.%d.%d.%d",
-		ectx->dsofilename,
-		dctx->cctx->verinfo.major,
-		dctx->cctx->verinfo.minor,
-		dctx->cctx->verinfo.revision);
+	if (ectx->relfilename) {
+		strcpy(target,ectx->relfilename);
+		sprintf(lnkname,"%s.release",ectx->dsofilename);
+
+		if (slbt_create_symlink(
+				dctx,ectx,
+				target,lnkname,
+				false))
+			return -1;
+	} else
+		sprintf(target,"%s.%d.%d.%d",
+			ectx->dsofilename,
+			dctx->cctx->verinfo.major,
+			dctx->cctx->verinfo.minor,
+			dctx->cctx->verinfo.revision);
 
 	if (fmajor)
 		sprintf(lnkname,"%s.%d",
@@ -986,7 +1010,8 @@ int slbt_exec_link(
 		/* linking: libfoo.so.x.y.z */
 		if (slbt_exec_link_create_library(
 				dctx,ectx,
-				ectx->dsofilename)) {
+				ectx->dsofilename,
+				ectx->relfilename)) {
 			slbt_free_exec_ctx(actx);
 			return -1;
 		}
@@ -1007,6 +1032,14 @@ int slbt_exec_link(
 				slbt_free_exec_ctx(actx);
 				return -1;
 			}
+		} else if (ectx->relfilename) {
+			/* symlink: libfoo.so --> libfoo-x.y.z.so */
+			if (slbt_exec_link_create_library_symlink(
+					dctx,ectx,
+					false)) {
+				slbt_free_exec_ctx(actx);
+				return -1;
+			}
 		}
 
 		/* PE import libraries */
-- 
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