Use C

hello_gcc/README.md

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+# Hello World with C
+
+- Install Julia in advance
+- Just run the following command:
+
+```sh
+$ bash run.sh
+1.4142135623730951
+```

hello_gcc/main.c

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+#include <julia.h>
+JULIA_DEFINE_FAST_TLS // only define this once, in an executable (not in a shared library) if you want fast code.
+
+int main(int argc, char *argv[])
+{
+    /* required: setup the Julia context */
+    jl_init();
+
+    /* run Julia commands */
+    jl_eval_string("print(sqrt(2.0))");
+
+    /* strongly recommended: notify Julia that the
+         program is about to terminate. this allows
+         Julia time to cleanup pending write requests
+         and run all finalizers
+    */
+    jl_atexit_hook(0);
+    return 0;
+}

hello_gcc/run.sh

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+JULIA_DIR=`julia -e 'print(dirname(Sys.BINDIR))'`
+gcc -fPIC -I$JULIA_DIR/include/julia -L$JULIA_DIR/lib -Wl,-rpath,$JULIA_DIR/lib main.c -ljulia
+./a.out