文件操作 - ax_prog_scalac.m4
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文件: /usr/share/aclocal/ax_prog_scalac.m4
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# =========================================================================== # https://www.gnu.org/software/autoconf-archive/ax_prog_scalac.html # =========================================================================== # # SYNOPSIS # # AX_PROG_SCALAC # # DESCRIPTION # # AX_PROG_SCALAC will check that a scala compiler is available, that it # works and set SCALAC for the Makefile. # # AX_PROG_SCALAC will search the path for a Scala compiler. To choose # another compiler use the environment variable SCALAC. # # LICENSE # # Copyright (c) 2013 Sveinung Kvilhaugsvik <sveinung84@users.sourceforge.net> # # Copying and distribution of this file, with or without modification, are # permitted in any medium without royalty provided the copyright notice # and this notice are preserved. This file is offered as-is, without any # warranty. #serial 2 AC_ARG_VAR(SCALAC, [scala compiler]) AC_DEFUN([AX_PROG_SCALAC], [ AC_CHECK_PROGS(SCALAC, [scalac]) AS_IF([test x"$SCALAC" != x], [ AC_CACHE_VAL(ax_cv_scalac_works, [ AC_MSG_CHECKING([if the Scala compiler works]) TESTFILE=conftest.scala echo ["object conftest {"] > $TESTFILE echo [" def main(args: Array[String]): Unit = return"] >> $TESTFILE echo ["}"] >> $TESTFILE [$SCALAC $TESTFILE && ax_cv_scalac_works=yes || ax_cv_scalac_works=no] AC_MSG_RESULT($ax_cv_scalac_works) AS_IF([test x"$ax_cv_scalac_works" != xyes], [ AC_MSG_ERROR([Scala compiler does not work. Unable to compile $TESTFILE]) ]) ]) ], AC_MSG_WARN([Scala compiler not found])) ])
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