From 2c8b5d5f2b2660b7cb6a9918711414d4bbb7d22c Mon Sep 17 00:00:00 2001
From: Bergmann Atmet <BergmannAtmet@github>
Date: Wed, 8 Jul 2026 18:23:31 +0300
Subject: [PATCH] try linking against the cblas library before blas

 `CMakeLists.txt` checks for the cblas header files. But that doesn't
 cover the linking part.

 Find and link against the cblas library. Otherwise, try the blas
 library.

Signed-off-by: Bergmann Atmet <BergmannAtmet@github>
---
 src/CMakeLists.txt | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 3a2753b..335708f 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -193,8 +193,9 @@ if(APPLE)
 elseif(TRANSCRIBE_USE_SYSTEM_BLAS)
     # BLA_VENDOR can be set by the user to prefer a specific BLAS
     # (e.g. -DBLA_VENDOR=OpenBLAS). find_package probes the system.
+    find_package(CBLAS QUIET)
     find_package(BLAS QUIET)
-    if(BLAS_FOUND)
+    if(CBLAS_FOUND OR BLAS_FOUND)
         # find_package(BLAS) may find a Fortran-only BLAS (e.g. libblas3
         # on Debian/Ubuntu) that lacks the cblas C wrappers. Verify that
         # cblas.h exists before enabling; otherwise the build compiles
@@ -202,7 +203,12 @@ elseif(TRANSCRIBE_USE_SYSTEM_BLAS)
         include(CheckIncludeFile)
         check_include_file(cblas.h HAVE_CBLAS_H)
         if(HAVE_CBLAS_H)
-            target_link_libraries(transcribe PRIVATE ${BLAS_LIBRARIES})
+            if(CBLAS_FOUND)
+                target_link_libraries(transcribe PRIVATE ${CBLAS_LIBRARIES})
+            elseif(BLAS_FOUND)
+                target_link_libraries(transcribe PRIVATE ${BLAS_LIBRARIES})
+            endif()
+
             target_compile_definitions(transcribe PRIVATE TRANSCRIBE_HAS_BLAS=1)
             message(STATUS "transcribe: BLAS found — decoder will use cblas_sgemv")
         else()