bootstrap: Build files only once.

* build-aux/bootstrap.sh.in: Build files only once.

build-aux/bootstrap.sh.in

@@ -49,9 +49,11 @@ cp crt1.s $mes_cpu-mes
 
 objects=
 for c in $libc_mini_SOURCES; do
+    o=$(basename $c .c).o
+    if test ${srcdest}$c -nt $o; then
         echo "  CC       $c"
         $CC -c $AM_CPPFLAGS $CPPFLAGS $AM_CFLAGS $CFLAGS ${srcdest}$c
-    o=$(basename $c .c).o
+    fi
     objects="$objects $o"
 done
 echo "  AR       $mes_cpu-mes/libc-mini.a"
@@ -59,9 +61,11 @@ $AR crD $mes_cpu-mes/libc-mini.a $objects
 
 objects=
 for c in $libc_SOURCES; do
+    o=$(basename $c .c).o
+    if test ${srcdest}$c -nt $o; then
         echo "  CC       $c"
         $CC -c $AM_CPPFLAGS $CPPFLAGS $AM_CFLAGS $CFLAGS ${srcdest}$c
-    o=$(basename $c .c).o
+    fi
     objects="$objects $o"
 done
 echo "  AR       $mes_cpu-mes/libc.a"
@@ -69,9 +73,11 @@ $AR crD $mes_cpu-mes/libc.a $objects
 
 objects=
 for c in $libc_tcc_SOURCES; do
+    o=$(basename $c .c).o
+    if test ${srcdest}$c -nt $o; then
         echo "  CC       $c"
         $CC -c $AM_CPPFLAGS $CPPFLAGS $AM_CFLAGS $CFLAGS ${srcdest}$c
-    o=$(basename $c .c).o
+    fi
     objects="$objects $o"
 done
 echo "  AR       $mes_cpu-mes/libc+tcc.a"
@@ -83,9 +89,11 @@ CPPFLAGS="-D HAVE_CONFIG_H=1 -I ${srcdest}include -I ${srcdest}include/$mes_kern
 
 objects=
 for c in $mes_SOURCES; do
+    o=$(basename $c .c).o
+    if test ${srcdest}$c -nt $o; then
         echo "  CC       $c"
         $CC -c $AM_CPPFLAGS $CPPFLAGS $AM_CFLAGS $CFLAGS ${srcdest}$c
-    o=$(basename $c .c).o
+    fi
     objects="$objects $o"
 done
 echo "  CCLD     src/mes"

build-aux/configure-lib.sh

@@ -47,7 +47,7 @@ libc_mini_SOURCES="$libc_mini_shared_SOURCES"
 
 if test $mes_libc = mes; then
     libc_mini_SOURCES="$libc_mini_SOURCES
-lib/mes/write.c
+lib/mes/mini-write.c
 "
 fi
 
@@ -101,7 +101,7 @@ lib/posix/getcwd.c
 lib/posix/getenv.c
 lib/posix/isatty.c
 lib/posix/open.c
-lib/posix/read.c
+lib/posix/buffered-read.c
 lib/posix/setenv.c
 lib/posix/wait.c
 lib/stdio/fgetc.c