gcc: Various fixups to ensure consistent gcc builds

(ported from oe-core for consistency)

We ensure that:
* the shared work directory contains PR and ensure PR values are consistent across gcc builds
* the regexp to handle library directories is in a specific task and run once

This avoids breakage that was seen in incremental builds after commit
be1f70d68b6b75772ebab8bdff683ddd7c42b0cd in oe-core where the interpretor could
become corrupted. This was due to the sed expression corrupting
the source directory.

Signed-off-by: Koen Kooi <koen@dominion.thruhere.net>

meta-oe/recipes-devtools/gcc/gcc-4.5.inc

@@ -14,7 +14,7 @@ LIC_FILES_CHKSUM = "file://COPYING;md5=59530bdf33659b29e73d4adb9f9f6552 \
 
 
 PV = "4.5"
-INC_PR = "r39"
+PR = "r40"
 
 # BINV should be incremented after updating to a revision
 # after a minor gcc release (e.g. 4.5.1 or 4.5.2) has been made

meta-oe/recipes-devtools/gcc/gcc-cross-canadian_4.5.bb

@@ -5,7 +5,6 @@ require recipes-devtools/gcc/gcc-cross-canadian.inc
 require recipes-devtools/gcc/gcc-configure-sdk.inc
 require recipes-devtools/gcc/gcc-package-sdk.inc
 
-PR = "${INC_PR}.0"
 
 DEPENDS += "gmp-nativesdk mpfr-nativesdk libmpc-nativesdk elfutils-nativesdk"
 RDEPENDS_${PN} += "mpfr-nativesdk libmpc-nativesdk elfutils-nativesdk"

meta-oe/recipes-devtools/gcc/gcc-cross-initial_4.5.bb

@@ -1,5 +1,4 @@
 require recipes-devtools/gcc/gcc-cross_${PV}.bb
 require recipes-devtools/gcc/gcc-cross-initial.inc
 
-PR = "${INC_PR}.0"
 

meta-oe/recipes-devtools/gcc/gcc-cross-intermediate_4.5.bb

@@ -1,4 +1,3 @@
 require recipes-devtools/gcc/gcc-cross_${PV}.bb
 require recipes-devtools/gcc/gcc-cross-intermediate.inc
-PR = "${INC_PR}.0"
 

meta-oe/recipes-devtools/gcc/gcc-cross_4.5.bb

@@ -1,4 +1,3 @@
-PR = "${INC_PR}.2"
 
 require recipes-devtools/gcc/gcc-${PV}.inc
 require recipes-devtools/gcc/gcc-cross4.inc

meta-oe/recipes-devtools/gcc/gcc-crosssdk-initial_4.5.bb

@@ -1,4 +1,3 @@
 require recipes-devtools/gcc/gcc-cross-initial_${PV}.bb
 require recipes-devtools/gcc/gcc-crosssdk-initial.inc
 
-PR = "${INC_PR}.0"

meta-oe/recipes-devtools/gcc/gcc-crosssdk-intermediate_4.5.bb

@@ -1,4 +1,3 @@
 require recipes-devtools/gcc/gcc-cross-intermediate_${PV}.bb
 require recipes-devtools/gcc/gcc-crosssdk-intermediate.inc
 
-PR = "${INC_PR}.0"

meta-oe/recipes-devtools/gcc/gcc-crosssdk_4.5.bb

@@ -1,4 +1,3 @@
 require recipes-devtools/gcc/gcc-cross_${PV}.bb
 require recipes-devtools/gcc/gcc-crosssdk.inc
 
-PR = "${INC_PR}.0"

meta-oe/recipes-devtools/gcc/gcc-runtime_4.5.bb

@@ -1,4 +1,3 @@
-PR = "${INC_PR}.1"
 
 require recipes-devtools/gcc/gcc-${PV}.inc
 require recipes-devtools/gcc/gcc-configure-runtime.inc

meta-oe/recipes-devtools/gcc/gcc_4.5.bb

@@ -1,4 +1,3 @@
-PR = "${INC_PR}.1"
 
 require recipes-devtools/gcc/gcc-${PV}.inc
 require recipes-devtools/gcc/gcc-configure-target.inc

meta-oe/recipes-devtools/gcc/libgcc_4.5.bb

@@ -1,6 +1,5 @@
 require recipes-devtools/gcc/gcc-${PV}.inc
 
-PR = "${INC_PR}.1"
 
 INHIBIT_DEFAULT_DEPS = "1"
 DEPENDS = "virtual/${TARGET_PREFIX}gcc virtual/${TARGET_PREFIX}g++"