Use programs more consistently (#141)

.github/workflows/main.yml

@@ -76,7 +76,7 @@ jobs:
       - name: autogen
         run: ./autogen.sh
       - name: configure
-        run: ./configure --host='${{matrix.cross.arch}}-unknown-elf' --enable-checks --enable-checks-pthreads --enable-checks-python AR='${{matrix.cross.cprefix}}ar' CC='${{matrix.cross.cprefix}}gcc' LD='${{matrix.cross.cprefix}}ld' RANLIB='${{matrix.cross.cprefix}}ranlib'
+        run: ./configure --host='${{matrix.cross.arch}}-unknown-elf' --enable-checks --enable-checks-pthreads --enable-checks-python CC='${{matrix.cross.cprefix}}gcc'
       - name: make
         run: make
       - name: check
@@ -121,7 +121,7 @@ jobs:
       - name: autogen
         run: ./autogen.sh
       - name: configure
-        run: ./configure --host='i386-elf' ${{matrix.debug}} --enable-freestanding --with-libc AR="$(which i686-linux-gnu-ar)" CC="$(which i686-linux-gnu-gcc)" LD="$(which i686-linux-gnu-ld)" RANLIB="$(which i686-linux-gnu-ranlib)"
+        run: ./configure --host='i386-elf' ${{matrix.debug}} --enable-freestanding --with-libc CC="$(which i686-linux-gnu-gcc)"
       - name: make
         run: make
 

README.md

@@ -212,11 +212,12 @@ without it in `$PATH`:
   --host='i386-elf' \
   --enable-freestanding \
   --with-libc \
-  AR="$(which i386-elf-ar)" \
-  CC="$(which i386-elf-gcc)" \
-  RANLIB="$(which i386-elf-ranlib)"
+  CC="$(which i386-elf-gcc)"
 ```
 
+The variables include `AR`, `AS`, `CC`, `CCAS`, `LD`, `NM`, `OBJDUMP`, `RANLIB`,
+`STRIP`. See the generated `config.log` for more information.
+
 To install into specific directory use full path: `DESTDIR="$(pwd)/dest" make
 install` instead of `DESTDIR=dest make install`.
 

configure.ac

@@ -319,10 +319,8 @@ AS_IF([test "$enable_freestanding" = yes],
 ##############
 
 AC_LANG([C])
-
-AM_PROG_AR
 AM_PROG_AS
-AC_PROG_CC
+
 AC_C_INLINE
 
 AC_HEADER_STDBOOL