From 218df582dd34efb7dae271c587ab5a97c10398a4 Mon Sep 17 00:00:00 2001
From: Adrian Thurston <thurston@colm.net>
Date: Fri, 27 Dec 2019 19:35:03 +0200
Subject: ragel: check that javac works

If ulimit -a is used, javac may not run. Added a configure check to verify it
runs. refs #92
---
 configure.ac | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

(limited to 'configure.ac')

diff --git a/configure.ac b/configure.ac
index 2a124740..09af2894 100644
--- a/configure.ac
+++ b/configure.ac
@@ -262,6 +262,24 @@ AC_PATH_PROG([RUST_BIN], [rustc])
 AC_PATH_PROG([JULIA_BIN], [julia])
 AC_PATH_PROG([GNUSTEP_CONFIG], [gnustep-config])
 
+dnl
+dnl Java test cases are now requring a large virtual address space. On systems
+dnl where this is limited by ulimit, java will fail to run.
+dnl
+
+if test "x$JAVAC_BIN" != x; then
+	echo 'class conftest { public static void main( String[] args ) { } }' > conftest.java
+	echo -n "checking if javac is able to compile programs ... "
+	if sh -c "$JAVAC_BIN conftest.java" >>config.log 2>&1; then
+		echo "yes"
+	else
+		echo "no"
+		JAVAC_BIN=""
+	fi
+	rm -f conftest.java conftest.class
+fi
+
+
 dnl
 dnl Julia requires a large virtual address space. On systems where this is
 dnl limited by ulimit, julia will fail to run.
-- 
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