[build] cleanup autotools references (openthread#9242)

Author: jwhui

.gitattributes

@@ -18,21 +18,3 @@
 *.png    binary !eol
 *.jpg    binary !eol
 *.gif    binary !eol
-
-# Files normalized to always keep Unix line endings
-.default-version  eol=lf
-bootstrap*        eol=lf
-config.guess      eol=lf
-config.status     eol=lf
-configure         eol=lf
-libtool           eol=lf
-libtoolize        eol=lf
-autoreconf        eol=lf
-mkversion         eol=lf
-*.sh              eol=lf
-*-sh              eol=lf
-*.m4              eol=lf
-configure.ac      eol=lf
-Makefile.am       eol=lf
-Makefile.in       eol=lf
-Makefile          eol=lf

.github/workflows/build.yml

@@ -420,12 +420,10 @@ jobs:
     - name: Bootstrap
       run: |
         brew update
-        brew install automake m4
         wget --tries 4 https://github.com/ninja-build/ninja/releases/download/v1.11.1/ninja-mac.zip
         unzip ninja-mac.zip && mv ninja /usr/local/bin/.
     - name: Build
       run: |
-        export PATH=$(brew --prefix m4)/bin:$PATH
         script/check-posix-build
         script/check-simulation-build
 

.gitignore

@@ -1,63 +1,29 @@
 *.a
 *.bak
-*.db
 *.flash
 *.gcda
 *.gcno
 *.log
 *.o
-*.lo
-*.la
 *.ninja*
-*.opendb
 *.orig
 *.pcap
 *.pyc
-*.suo
 *.swn
 *.swo
 *.swp
 *.trs
-*.user
 *.bak
 *~
-.deps
-.dirstamp
 .DS_Store
-.local-version
-.libs
 .vagrant
-aclocal.m4
-autom4te.cache
 build
 CMakeCache.txt
 CMakeFiles
 cmake_install.cmake
-configure
-config.log
-config.status
 doc/Doxyfile
 doc/html
-etc/cmake/openthread-config-generic.h
-include/openthread-config.h
-include/openthread-config.h.in
-include/openthread-config-generic.h
-include/openthread-config-generic.h.in
-include/stamp-h1
-ipch
-libtool
-Makefile
-Makefile.in
 output
-third_party/nlbuild-autotools/repo/third_party/autoconf/compile
-third_party/nlbuild-autotools/repo/third_party/autoconf/depcomp
-third_party/nlbuild-autotools/repo/third_party/autoconf/ltmain.sh
-third_party/nlbuild-autotools/repo/third_party/autoconf/m4/libtool.m4
-third_party/nlbuild-autotools/repo/third_party/autoconf/m4/ltoptions.m4
-third_party/nlbuild-autotools/repo/third_party/autoconf/m4/ltsugar.m4
-third_party/nlbuild-autotools/repo/third_party/autoconf/m4/ltversion.m4
-third_party/nlbuild-autotools/repo/third_party/autoconf/m4/lt~obsolete.m4
-third_party/nlbuild-autotools/repo/third_party/autoconf/missing
 /tmp/
 
 # IDE / editor files