user/llvm18: Ensure stack sizes are set properly

* Run `chelf` on the binaries after they are installed, in case they are
  re-linked during the install process.  This was the cause of #1272.

* Disable two more tests that caused failures on gwyn due to #1250.

Closes: #1272

bootstrap/llvm18/APKBUILD

@@ -130,7 +130,9 @@ prepare() {
 
 	#1250
 	rm -v \
+		test/tools/dsymutil/ARM/DWARFLinkerParallel/accel-imported-declarations.test \
 		test/tools/dsymutil/X86/DWARFLinkerParallel/odr-member-functions.cpp \
+		test/tools/dsymutil/X86/DWARFLinkerParallel/odr-parents.test \
 		test/tools/dsymutil/X86/DWARFLinkerParallel/odr-predictable-output2.test \
 		test/tools/dsymutil/X86/DWARFLinkerParallel/odr-string.test \
 		test/tools/dsymutil/X86/DWARFLinkerParallel/odr-uniquing.cpp
@@ -246,6 +248,13 @@ package() {
 	ln -s ../../include/$pkgname include
 
 	ln -s "$pkgdir"/usr/lib/cmake/llvm ../$pkgname/lib/cmake/llvm
+
+	# Thread 3 requires a lot of stack space to LTO when targeting ARM.
+	# Note that this occurs even when crossing (on a ppc64 host).
+	chelf -s 1048576 bin/llvm-lto2
+	# Needed for parallel-linker support (pthread stack size).
+	chelf -s 1048576 bin/dsymutil
+	chelf -s 1048576 bin/llvm-dwarfutil
 }
 
 static() {

user/llvm18/APKBUILD

@@ -130,7 +130,9 @@ prepare() {
 
 	#1250
 	rm -v \
+		test/tools/dsymutil/ARM/DWARFLinkerParallel/accel-imported-declarations.test \
 		test/tools/dsymutil/X86/DWARFLinkerParallel/odr-member-functions.cpp \
+		test/tools/dsymutil/X86/DWARFLinkerParallel/odr-parents.test \
 		test/tools/dsymutil/X86/DWARFLinkerParallel/odr-predictable-output2.test \
 		test/tools/dsymutil/X86/DWARFLinkerParallel/odr-string.test \
 		test/tools/dsymutil/X86/DWARFLinkerParallel/odr-uniquing.cpp
@@ -246,6 +248,13 @@ package() {
 	ln -s ../../include/$pkgname include
 
 	ln -s "$pkgdir"/usr/lib/cmake/llvm ../$pkgname/lib/cmake/llvm
+
+	# Thread 3 requires a lot of stack space to LTO when targeting ARM.
+	# Note that this occurs even when crossing (on a ppc64 host).
+	chelf -s 1048576 bin/llvm-lto2
+	# Needed for parallel-linker support (pthread stack size).
+	chelf -s 1048576 bin/dsymutil
+	chelf -s 1048576 bin/llvm-dwarfutil
 }
 
 static() {