Allow to use EXE_WRAPPER as makefile option

Makefile

@@ -10,6 +10,12 @@ all: dgl examples gen
 
 # --------------------------------------------------------------
 
+ifneq ($(CROSS_COMPILING),true)
+CAN_GENERATE_TTL = true
+else ifeq ($(EXE_WRAPPER),)
+CAN_GENERATE_TTL = true
+endif
+
 dgl:
 	$(MAKE) -C dgl
 
@@ -35,7 +41,7 @@ ifneq ($(MACOS_OR_WINDOWS),true)
 	install -m 755 examples/ExternalUI/ExternalLauncher.sh bin/d_extui.lv2/d_extui.sh
 endif
 
-ifneq ($(CROSS_COMPILING),true)
+ifneq ($(CAN_GENERATE_TTL),true)
 gen: examples utils/lv2_ttl_generator
 	@$(CURDIR)/utils/generate-ttl.sh
 ifeq ($(MACOS),true)

utils/generate-ttl.sh

@@ -9,13 +9,13 @@ else
   exit
 fi
 
-PWD="$(dirname "$0")"
+PWD="$(dirname "${0}")"
 
-if [ -f "$PWD/lv2_ttl_generator.exe" ]; then
-  GEN="$PWD/lv2_ttl_generator.exe"
+if [ -f "${PWD}/lv2_ttl_generator.exe" ]; then
+  GEN="${PWD}/lv2_ttl_generator.exe"
   EXT=dll
 else
-  GEN="$PWD/lv2_ttl_generator"
+  GEN="${PWD}/lv2_ttl_generator"
   if [ -d /Library/Audio ]; then
     EXT=dylib
   else
@@ -25,9 +25,9 @@ fi
 
 FOLDERS=`find . -type d -name \*.lv2`
 
-for i in $FOLDERS; do
-  cd $i
-  FILE="$(ls *.$EXT | sort | head -n 1)"
-  "$GEN" "./$FILE"
+for i in ${FOLDERS}; do
+  cd ${i}
+  FILE="$(ls *.${EXT} | sort | head -n 1)"
+  "${EXE_WRAPPER}" "${GEN}" "./${FILE}"
   cd ..
 done