$ ./run.sh 
+ rm -rf '*.so' '*.o' m1.import.scm m2.import.scm 'src/*.so' src/m1.o src/m2.o
+ tree
.
├── main.scm
├── run.sh
└── src
    ├── m1.scm
    └── m2.scm

1 directory, 4 files
+ echo ----------------------------------------
----------------------------------------
+ more run.sh src/m1.scm src/m2.scm main.scm
+ cat
::::::::::::::
run.sh
::::::::::::::
#!/usr/bin/env bash
set -euox pipefail

rm -rf *.so *.o *.import.scm src/*.so src/*.o
tree

echo "----------------------------------------"
more run.sh src/m1.scm src/m2.scm main.scm | cat
echo "----------------------------------------"

csc -c -O3 -J -unit m1 src/m1.scm
csc -c -O3 -J -uses m1 -unit m2 src/m2.scm
tree
csc -static main.scm -uses m1 src/m1.o -uses m2 src/m2.o
./main
::::::::::::::
src/m1.scm
::::::::::::::
(module
 m1 (m1-bar) (import scheme (chicken base))
 (define (m1-bar f) (print "m1-bar called " f) `(list m1-bar ,f)))
::::::::::::::
src/m2.scm
::::::::::::::
(module
 m2
 (m2-macro)
 (import scheme (chicken base))
 (import m1)
 (define-syntax m2-macro
   (ir-macro-transformer (lambda (e inj cmp)
                           (m1-bar (cdr e))))))
::::::::::::::
main.scm
::::::::::::::
(import m2)
(print (m2-macro "hello" "there"))
+ echo ----------------------------------------
----------------------------------------
+ csc -c -O3 -J -unit m1 src/m1.scm
+ csc -c -O3 -J -uses m1 -unit m2 src/m2.scm
+ tree
.
├── m1.import.scm
├── m2.import.scm
├── main.scm
├── run.sh
└── src
    ├── m1.o
    ├── m1.scm
    ├── m2.o
    └── m2.scm

1 directory, 8 files
+ csc -static main.scm -uses m1 src/m1.o -uses m2 src/m2.o

Error: during expansion of (m2-macro ...) - unbound variable: m1#m1-bar

	Call history:

	<syntax>	  (##core#begin (print (m2-macro "hello" "there")))
	<syntax>	  (print (m2-macro "hello" "there"))
	<syntax>	  (m2-macro "hello" "there")
	<eval>	  (m1-bar (cdr e))	<--