OpenBLAS: fix linking on older Mac versions

Tweak ar options instead of using weak linking. Ensure that the
_xerbla_ symbol exists by always writing the correct xerbla.c.o file
to the archive regardless of compilation order.

Fixes: https://trac.macports.org/ticket/68810

math/OpenBLAS/Portfile

@@ -33,14 +33,14 @@ if {[string first "-devel" $subport] > 0} {
     checksums       rmd160  30577718a2f6880b2c9a799fa0dcf8830ef91c47 \
                     sha256  7be7acf6cc22c55a36980953942e1f6fecadf993bd6e02b793b70e15fbd25e9e \
                     size    24307835
-    revision        1
+    revision        2
 
     conflicts       OpenBLAS
 
     patchfiles      patch-libnoarch.devel.diff \
                     patch-openblas.pc-fixed-version-and-url.diff \
                     patch-enable-overstep-of-too-long-args-without-DYNAMIC_ARCH.diff \
-                    patch-weak-linking-old-macos.diff \
+                    patch-ar-options-old-macos.diff \
                     patch-OpenBLAS-old-macos.diff \
                     patch-OpenBLAS-i386-Apple.diff
 
@@ -56,15 +56,15 @@ if {[string first "-devel" $subport] > 0} {
     checksums       rmd160  eea6fe2c33762df4c47c7241808dabbdb085eed3 \
                     sha256  4c25cb30c4bb23eddca05d7d0a85997b8db6144f5464ba7f8c09ce91e2f35543 \
                     size    24073168
-    revision        3
+    revision        4
 
     conflicts       OpenBLAS-devel
 
     patchfiles      patch-libnoarch.release.diff \
                     patch-xcode15-fix.diff \
                     patch-openblas.pc-fixed-version-and-url.diff \
                     patch-enable-overstep-of-too-long-args-without-DYNAMIC_ARCH.diff \
-                    patch-weak-linking-old-macos.diff \
+                    patch-ar-options-old-macos.diff \
                     patch-OpenBLAS-old-macos.diff \
                     patch-OpenBLAS-i386-Apple.diff
 

math/OpenBLAS/files/patch-ar-options-old-macos.diff

@@ -0,0 +1,10 @@
+diff --git CMakeLists.txt CMakeLists.txt
+index 7c6b96f41..7e5d1e0fb 100644
+--- CMakeLists.txt
++++ CMakeLists.txt
+@@ -257,1 +257,1 @@ "sh -c 'cat ${CMAKE_BINARY_DIR}/CMakeFiles/openblas_shared.dir/objects*.rsp | xargs -n 1024 ${CMAKE_AR} -ru libopenblas.a && exit 0' "
+- "sh -c '${CMAKE_AR} -ru libopenblas.a ${CMAKE_BINARY_DIR}/driver/others/CMakeFiles/driver_others.dir/xerbla.c.o && exit 0' "
++ "sh -c '${CMAKE_AR} -rs libopenblas.a ${CMAKE_BINARY_DIR}/driver/others/CMakeFiles/driver_others.dir/xerbla.c.o && exit 0' "
+@@ -266,1 +266,1 @@   "sh -c 'cat ${CMAKE_BINARY_DIR}/CMakeFiles/openblas_shared.dir/objects*.rsp | xargs -n 1024 ${CMAKE_AR} -ru libopenblas.a && exit 0' "
+-   "sh -c '${CMAKE_AR} -ru libopenblas.a ${CMAKE_BINARY_DIR}/driver/others/CMakeFiles/driver_others.dir/xerbla.c.o && exit 0' "
++   "sh -c '${CMAKE_AR} -rs libopenblas.a ${CMAKE_BINARY_DIR}/driver/others/CMakeFiles/driver_others.dir/xerbla.c.o && exit 0' "