root / autotools / ac_ghc_pkg.m4 @ 2c04ae0d
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# Copyright (C) 2012 Google Inc. |
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# |
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# This program is free software; you can redistribute it and/or modify |
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# it under the terms of the GNU General Public License as published by |
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# the Free Software Foundation; either version 2 of the License, or |
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# (at your option) any later version. |
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# |
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# This program is distributed in the hope that it will be useful, but |
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# WITHOUT ANY WARRANTY; without even the implied warranty of |
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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# General Public License for more details. |
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# |
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# You should have received a copy of the GNU General Public License |
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# along with this program; if not, write to the Free Software |
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
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# 02110-1301, USA. |
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##### |
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# |
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# SYNOPSIS |
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# |
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# AC_GHC_PKG_CHECK(modname, action_found, action_not_found, extended) |
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# |
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# DESCRIPTION |
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# |
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# Checks for a Haskell (GHC) module. If found, execute the second |
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# argument, if not found, the third one. |
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# |
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# If the fourth argument is non-empty, then the check will be some |
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# via 'ghc-pkg list' (which supports patterns), otherwise it will |
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# use just 'ghc-pkg latest'. |
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# |
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# |
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##### |
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|
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AC_DEFUN([AC_GHC_PKG_CHECK],[ |
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if test -z $GHC_PKG; then |
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AC_MSG_ERROR([GHC_PKG not defined]) |
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fi |
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AC_MSG_CHECKING([haskell library $1]) |
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if test -n "$4"; then |
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GHC_PKG_RESULT=$($GHC_PKG --simple-output list '$1'|tail -n1) |
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else |
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GHC_PKG_RESULT=$($GHC_PKG latest '$1' 2>/dev/null) |
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fi |
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if test -n "$GHC_PKG_RESULT"; then |
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AC_MSG_RESULT($GHC_PKG_RESULT) |
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$2 |
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else |
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AC_MSG_RESULT([no]) |
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$3 |
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fi |
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]) |
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|
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##### |
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# |
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# SYNOPSIS |
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# |
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# AC_GHC_PKG_REQUIRE(modname, extended) |
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# |
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# DESCRIPTION |
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# |
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# Checks for a Haskell (GHC) module, and abort if not found. If the |
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# second argument is non-empty, then the check will be some via |
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# 'ghc-pkg list' (which supports patterns), otherwise it will use |
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# just 'ghc-pkg latest'. |
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# |
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# |
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##### |
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|
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AC_DEFUN([AC_GHC_PKG_REQUIRE],[ |
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AC_GHC_PKG_CHECK($1, [], |
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[AC_MSG_FAILURE([Required Haskell module $1 not found])], |
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$2) |
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]) |