Fixes <http://bugs.gnu.org/22375>. * gnu/packages/patches/automake-regexp-syntax.patch: New file. * gnu/packages/autotools.scm (automake)[source]: Use it. * gnu-system.am (dist_patch_DATA): Add it.
		
			
				
	
	
		
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From <https://lists.gnu.org/archive/html/automake-patches/2015-07/msg00000.html>.
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See also <http://bugs.gnu.org/22372>.
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From 34163794a58b5bd91c5d6bd9adf5437571c7a479 Mon Sep 17 00:00:00 2001
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From: Pavel Raiskup <praiskup@redhat.com>
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Date: Tue, 7 Jul 2015 10:54:24 +0200
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Subject: [PATCH] bin/automake: escape '{' in regexp pattern
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Based on perlre(1) documentation:
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.. in Perl v5.26, literal uses of a curly bracket will be required
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to be escaped, say by preceding them with a backslash ("\{" ) or
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enclosing them within square brackets ("[{]") ..
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References:
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https://bugzilla.redhat.com/1239379
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* bin/automake.in (substitute_ac_subst_variables): Escape the
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occurrence of '{' character.
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---
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 bin/automake.in | 2 +-
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 1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/bin/automake.in b/bin/automake.in
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index 0c29184..c294ced 100644
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--- a/bin/automake.in
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+++ b/bin/automake.in
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@@ -3898,7 +3898,7 @@ sub substitute_ac_subst_variables_worker
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 sub substitute_ac_subst_variables
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 {
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   my ($text) = @_;
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-  $text =~ s/\${([^ \t=:+{}]+)}/substitute_ac_subst_variables_worker ($1)/ge;
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+  $text =~ s/\$\{([^ \t=:+{}]+)}/substitute_ac_subst_variables_worker ($1)/ge;
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   return $text;
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 }
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