It now builds properly!

build/protobuf.py

@@ -31,6 +31,7 @@ def proto(self, name, srcs: Targets = [], deps: Targets = []):
         ]
     )
 
+    if srcs:
         dirs = sorted({"$[dir]/" + dirname(f) for f in filenamesof(srcs)})
         simplerule(
             replaces=self,
@@ -66,6 +67,18 @@ def proto(self, name, srcs: Targets = [], deps: Targets = []):
                 "protodeps": set(protodeps) | {self},
             },
         )
+    else:
+        simplerule(
+            replaces=self,
+            ins=protodeps,
+            outs=["=stamp"],
+            commands=["touch $[outs]"],
+            label="PROTO",
+            args={
+                "protosrcs": [],
+                "protodeps": set(protodeps),
+            },
+        )
 
 
 @Rule

dep/fmt/build.py

@@ -21,6 +21,6 @@ cxxlibrary(
         "fmt/printf.h": "./include/fmt/printf.h",
         "fmt/ranges.h": "./include/fmt/ranges.h",
         "fmt/std.h": "./include/fmt/std.h",
-        "fmt/xchar.h": "./include/fmt/xchar.h"
+        "fmt/xchar.h": "./include/fmt/xchar.h",
     },
 )

scripts/encodedecodetest.sh

@@ -14,7 +14,9 @@ destfile=$dir/dest.img
 
 dd if=/dev/urandom of=$srcfile bs=1048576 count=2 2>&1
 
+echo $fluxengine write $format -i $srcfile -d $fluxfile --drive.rotational_period_ms=200 $flags
 $fluxengine write $format -i $srcfile -d $fluxfile --drive.rotational_period_ms=200 $flags
+echo $fluxengine read $format -s $fluxfile -o $destfile --drive.rotational_period_ms=200 $flags
 $fluxengine read $format -s $fluxfile -o $destfile --drive.rotational_period_ms=200 $flags
 if [ ! -s $destfile ]; then
 	echo "Zero length output file!" >&2

src/gui/build.py

@@ -16,7 +16,7 @@ endif
 """
 )
 
-extrasrcs = []
+extrasrcs = ["./layout.cpp"]
 if config.windows:
     extrasrcs += [
         simplerule(
@@ -31,9 +31,7 @@ if config.windows:
 
 cxxprogram(
     name="gui",
-    srcs=glob("*.c", root_dir="src/gui") +
-    glob("*.h", root_dir="src/gui")
-    + extrasrcs,
+    srcs=glob("src/gui/*.cc") + glob("src/gui/*.h") + extrasrcs,
     cflags=["$(WX_CFLAGS)"],
     ldflags=["$(WX_LDFLAGS)"],
     deps=[