From e9922f6e7b595c390ea48d1f645f760bb8606243 Mon Sep 17 00:00:00 2001
From: Johannes Pietrzyk <40020979+JPietrzykTUD@users.noreply.github.com>
Date: Wed, 4 Sep 2024 14:11:21 +0200
Subject: [PATCH] Bash cpuflags (#109)

* added bash-only script to detect cpuid flags based on g++ and/or clang

* wip bash script

* unified arch detection

* wip arch detection

* dynamic executable detection

* removed old regex

* added lscpu detection as first-choice

* Updated install_tsl.sh

---------

Co-authored-by: Alexander Krause <alexander.krause@tu-dresden.de>
---
 .github/workflows/install_tsl.sh  | 10 ++++++++--
 .github/workflows/release-tsl.yml |  1 +
 detect_flags.sh                   |  2 +-
 3 files changed, 10 insertions(+), 3 deletions(-)

diff --git a/.github/workflows/install_tsl.sh b/.github/workflows/install_tsl.sh
index a389637..f3ed264 100755
--- a/.github/workflows/install_tsl.sh
+++ b/.github/workflows/install_tsl.sh
@@ -9,9 +9,15 @@ WORK_DIR=$(pwd)
 
 
 curl -L "https://github.com/db-tu-dresden/TSL/releases/latest/download/tsl.tar.gz" -o ${TMP_DIR}/tsl.tar.gz
-LSCPU_FLAGS_STRING=$(LANG=en;lscpu | grep 'Flags:' | sed -E 's/Flags:\s*//g' | sed -E 's/\s/:/g')
+curl -L "https://github.com/db-tu-dresden/TSL/releases/latest/download/detect_flags.sh" -o ${TMP_DIR}/detect_flags.sh
+chmod +x ${TMP_DIR}/detect_flags.sh
+
 #create array from flags string
-AVAIL_FLAGS=(${LSCPU_FLAGS_STRING//:/ })
+# AVAIL_FLAGS=($(${TMP_DIR}/detect_flags.sh))
+IFS=' ' read -r -a AVAIL_FLAGS <<< "$(${TMP_DIR}/detect_flags.sh)"
+unset IFS
+
+
 #unpack tsl.conf
 tar -xf ${TMP_DIR}/tsl.tar.gz -C ${TMP_DIR} ${TAR_PREFIX_TSL_DIR}/tsl.conf
 
diff --git a/.github/workflows/release-tsl.yml b/.github/workflows/release-tsl.yml
index 75c8eb0..b5128c3 100644
--- a/.github/workflows/release-tsl.yml
+++ b/.github/workflows/release-tsl.yml
@@ -158,6 +158,7 @@ jobs:
           files: |
             ${{ github.workspace }}/tsl.tar.gz
             ${{ github.workspace }}/.github/workflows/install_tsl.sh
+            ${{ github.workspace }}/detect_flags.sh
             ${{ github.workspace }}/${{ steps.rpm.outputs.out }}/${{ steps.rpm.outputs.name}}
             ${{ github.workspace }}/${{ steps.deb.outputs.out }}/${{ steps.deb.outputs.name}}
           tag_name: ${{ inputs.tag-name }}
diff --git a/detect_flags.sh b/detect_flags.sh
index fc27a60..fabcdb7 100755
--- a/detect_flags.sh
+++ b/detect_flags.sh
@@ -29,7 +29,7 @@ function parse_flags {
     fi
 }
 
-lscpu_exe=$(which lscpu)
+lscpu_exe=$(which lscpu 2>/dev/null)
 if [[ ! -z ${lscpu_exe} && -f $lscpu_exe && -x $lscpu_exe ]]; then 
     flags=$(eval LANG=en;lscpu|grep -i flags | tr ' ' '\n' | grep -v -E '^Flags:|^$' | sort -d | tr '\n' ' ')
     echo "$flags"