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-rw-r--r--src/runtime/java/Makefile5
1 files changed, 3 insertions, 2 deletions
diff --git a/src/runtime/java/Makefile b/src/runtime/java/Makefile
index ce185e044..8310a5720 100644
--- a/src/runtime/java/Makefile
+++ b/src/runtime/java/Makefile
@@ -2,8 +2,9 @@ C_SOURCES = jpgf.c jsg.c jni_utils.c
JAVA_SOURCES = $(wildcard org/grammaticalframework/pgf/*.java) \
$(wildcard org/grammaticalframework/sg/*.java)
-JNI_PATH = /usr/lib/jvm/default-java/include
-#JNI_PATH = /System/Library/Frameworks/JavaVM.framework/Versions/A/Headers/
+JNI_PATH = $(if $(wildcard /usr/lib/jvm/default-java/include/.*), /usr/lib/jvm/default-java/include, \
+ $(if $(wildcard /System/Library/Frameworks/JavaVM.framework/Versions/A/Headers/.*), /System/Library/Frameworks/JavaVM.framework/Versions/A/Headers, \
+ $(error No JNI headers found)))
INSTALL_PATH = /usr/local/lib
LIBTOOL = $(if $(shell command -v glibtool 2>/dev/null), glibtool --tag=CC, libtool)