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-rwxr-xr-xBuild/source/texk/lacheck/configure4
1 files changed, 4 insertions, 0 deletions
diff --git a/Build/source/texk/lacheck/configure b/Build/source/texk/lacheck/configure
index 3836f31fb25..717c4cff525 100755
--- a/Build/source/texk/lacheck/configure
+++ b/Build/source/texk/lacheck/configure
@@ -12830,6 +12830,10 @@ cat >>confdefs.h <<\_ACEOF
#define HAVE_PROTOTYPES 1
_ACEOF
+else
+ { { $as_echo "$as_me:$LINENO: error: Sorry, your compiler does not understand prototypes." >&5
+$as_echo "$as_me: error: Sorry, your compiler does not understand prototypes." >&2;}
+ { (exit 1); exit 1; }; }
fi
{ $as_echo "$as_me:$LINENO: checking whether program_invocation_name is predefined" >&5
$as_echo_n "checking whether program_invocation_name is predefined... " >&6; }