helpers: Improve Makefile to support isolated build envs

frida · Mar 7, 2024 · 69d3634 · 69d3634
1 parent e82c1ac
commit 69d3634
Showing 1 changed file with 13 additions and 5 deletions.
diff --git a/src/linux/helpers/Makefile b/src/linux/helpers/Makefile
@@ -1,16 +1,24 @@
-FRIDA_MONOREPO ?= ../../../..
+top_srcdir := ../../..
+releng := $(top_srcdir)/releng
+
+BUILDDIR ?= $(top_srcdir)/build
+FRIDA_MONOREPO ?= $(top_srcdir)/..
 
 ifdef FRIDA_HOST
 host_os := $(shell echo $(FRIDA_HOST) | cut -f1 -d"-")
 host_arch := $(shell echo $(FRIDA_HOST) | cut -f2 -d"-")
 else
-host_os := $(shell $(FRIDA_MONOREPO)/releng/detect-os.sh)
-host_arch := $(shell $(FRIDA_MONOREPO)/releng/detect-arch.sh)
+host_os := $(shell $(releng)/detect-os.sh)
+host_arch := $(shell $(releng)/detect-arch.sh)
 endif
 
-build: $(FRIDA_MONOREPO)/build/frida*-$(host_os)-$(host_arch).txt ext/linux/tools/include/nolibc/nolibc.h
+crossfile := $(shell test -d "$(BUILDDIR)" \
+		&& echo "$(BUILDDIR)/frida-$(host_os)-$(host_arch).txt" \
+		|| echo $(FRIDA_MONOREPO)/build/frida*-$(host_os)-$(host_arch).txt)
+
+build: ext/linux/tools/include/nolibc/nolibc.h
 	rm -rf build
-	meson setup --cross-file $< -Db_lto=true build
+	meson setup --cross-file $(crossfile) -Db_lto=true build
 	meson compile -C build
 	cp build/bootstrapper.bin bootstrapper-$(host_arch).bin
 	cp build/loader.bin loader-$(host_arch).bin