Apply voutcn/megahit#368 as a patch to fix the build on Linux ARM64

Signed-off-by: Martin Tzvetanov Grigorov <[email protected]>

recipes/megahit/linux-aarch64-support-pr-368.patch

@@ -0,0 +1,74 @@
+From 296ad6b5359ac5072a97fe0b7f72cad08031542f Mon Sep 17 00:00:00 2001
+From: Martin Tzvetanov Grigorov <[email protected]>
+Date: Wed, 27 Mar 2024 15:07:02 +0200
+Subject: [PATCH 1/5] Add support for non-x86_64 architectures (e.g. Linux
+ ARM64)
+
+Fixes https://github.com/voutcn/megahit/issues/320
+Based on: https://github.com/voutcn/megahit/pull/329
+
+Preserves the x86_64 specifics when building on x86_64 machine
+
+Signed-off-by: Martin Tzvetanov Grigorov <[email protected]>
+---
+ CMakeLists.txt           | 8 ++++++--
+ src/kmlib/kmrns.h        | 2 ++
+ src/utils/cpu_dispatch.h | 6 ++++++
+ 3 files changed, 14 insertions(+), 2 deletions(-)
+
+diff --git a/CMakeLists.txt b/CMakeLists.txt
+index 172a03d..d21b2d3 100644
+--- a/CMakeLists.txt
++++ b/CMakeLists.txt
+@@ -73,8 +73,12 @@ add_executable(megahit_core_popcnt ${OTHER_SOURCE} ${ASMBL_SOURCE} ${IDBA_SOURCE
+         ${CX1_SOURCE} ${TOOLKIT_SOURCE})
+ add_executable(megahit_core_no_hw_accel ${OTHER_SOURCE} ${ASMBL_SOURCE} ${IDBA_SOURCE} ${SDBG_SOURCE} ${LCASM_SOURCE}
+         ${SEQ_SOURCE} ${CX1_SOURCE} ${TOOLKIT_SOURCE})
+-set_target_properties(megahit_core PROPERTIES COMPILE_FLAGS "-mbmi2 -DUSE_BMI2 -mpopcnt")
+-set_target_properties(megahit_core_popcnt PROPERTIES COMPILE_FLAGS "-mpopcnt")
++
++if (CMAKE_SYSTEM_PROCESSOR MATCHES "(x86_64)|(amd64)|(AMD64)")
++    set_target_properties(megahit_core PROPERTIES COMPILE_FLAGS "-mbmi2 -DUSE_BMI2 -mpopcnt")
++    set_target_properties(megahit_core_popcnt PROPERTIES COMPILE_FLAGS "-mpopcnt")
++endif ()
++
+
+ if (STATIC_BUILD)
+     # TODO dirty
+diff --git a/src/kmlib/kmrns.h b/src/kmlib/kmrns.h
+index 9f2e9dd..0352858 100644
+--- a/src/kmlib/kmrns.h
++++ b/src/kmlib/kmrns.h
+@@ -8,7 +8,9 @@
+ #include <stdint.h>
+ #include <stdio.h>
+ #include <stdlib.h>
++#if defined(__x86_64__)
+ #include <x86intrin.h>
++#endif
+ #include <vector>
+
+ namespace kmlib {
+diff --git a/src/utils/cpu_dispatch.h b/src/utils/cpu_dispatch.h
+index ec01bb6..44ba1e2 100644
+--- a/src/utils/cpu_dispatch.h
++++ b/src/utils/cpu_dispatch.h
+@@ -5,6 +5,7 @@
+ #ifndef MEGAHIT_CPU_DISPATCH_H
+ #define MEGAHIT_CPU_DISPATCH_H
+
++#if defined(__x86_64__)
+ inline bool HasPopcnt() {
+   unsigned eax, ebx, ecx, edx;
+ #ifdef _MSC_VER
+@@ -32,5 +33,10 @@ inline bool HasBmi2() {
+ #endif
+   return ebx >> 8U & 1U;
+ }
++#else
++inline bool HasPopcnt() { return false; }
++inline bool HasBmi2() { return false; }
++#endif
++
+
+ #endif  // MEGAHIT_CPU_DISPATCH_H

recipes/megahit/meta.yaml

@@ -8,6 +8,8 @@ package:
 source:
   sha256: '{{sha256}}'
   url: https://github.com/voutcn/megahit/archive/v{{version}}.tar.gz
+  patches:
+    - linux-aarch64-support-pr-368.patch
 
 build:
   number: 5