diff --git a/recipe/bld.bat b/recipe/bld.bat
index 0f1bc90..dc54d14 100644
--- a/recipe/bld.bat
+++ b/recipe/bld.bat
@@ -12,6 +12,10 @@ for %%f in (CBLAS\testing\*.c) do (
 mkdir build
 cd build
 
+:: Disable building INDEX64_EXT_API, as it includes ILP64 symbols within the LP64 library.
+:: We cannot do that unless all the alternative providers do that as well, as otherwise
+:: packages can start linking to these symbols.
+
 cmake -G "Ninja" ^
     -DCMAKE_INSTALL_PREFIX=%LIBRARY_PREFIX% ^
     -DBUILD_SHARED_LIBS=yes ^
@@ -21,6 +25,7 @@ cmake -G "Ninja" ^
     -DLAPACKE=ON ^
     -DCBLAS=ON ^
     -DBUILD_DEPRECATED=ON ^
+    -DBUILD_INDEX64_EXT_API=OFF ^
     -Wno-dev ..
 
 ninja -j%CPU_COUNT%
diff --git a/recipe/build.sh b/recipe/build.sh
index 267bd3e..2702c3a 100644
--- a/recipe/build.sh
+++ b/recipe/build.sh
@@ -25,6 +25,10 @@ export FFLAGS="$FFLAGS -fno-optimize-sibling-calls"
 
 # CMAKE_INSTALL_LIBDIR="lib" suppresses CentOS default of lib64 (conda expects lib)
 
+# Disable building INDEX64_EXT_API, as it includes ILP64 symbols within the LP64 library.
+# We cannot do that unless all the alternative providers do that as well, as otherwise
+# packages can start linking to these symbols.
+
 cmake \
   -DCMAKE_INSTALL_PREFIX=${PREFIX} \
   -DCMAKE_INSTALL_LIBDIR="lib" \
@@ -34,6 +38,7 @@ cmake \
   -DCBLAS=ON \
   -DBUILD_DEPRECATED=ON \
   -DTEST_FORTRAN_COMPILER=OFF \
+  -DBUILD_INDEX64_EXT_API=OFF \
   ${CMAKE_ARGS} ..
 
 make install -j${CPU_COUNT} VERBOSE=1
diff --git a/recipe/meta.yaml b/recipe/meta.yaml
index af9e04a..3e57ef9 100644
--- a/recipe/meta.yaml
+++ b/recipe/meta.yaml
@@ -1,6 +1,6 @@
 {% set version = "3.12.1" %}
 # if build_num is reset to 0 (for new version), update increment for blas_minor below
-{% set build_num = 1 %}
+{% set build_num = 2 %}
 {% set version_major = version.split(".")[0] %}
 {% set version_minor = version.split(".")[1] %}
 # blas_major denotes major infrastructural change to how blas is managed