bootloader: Fix error in Make build system when signature options is on

components/bootloader/Makefile.projbuild

@@ -17,6 +17,8 @@ CONFIG_SECURE_BOOT_SIGNING_KEY ?=
 SECURE_BOOT_SIGNING_KEY=$(abspath $(call dequote,$(CONFIG_SECURE_BOOT_SIGNING_KEY)))
 export SECURE_BOOT_SIGNING_KEY  # used by bootloader_support component
 
+BOOTLOADER_SIGNED_BIN ?=
+
 # Has a matching value in bootloader_support esp_flash_partitions.h
 BOOTLOADER_OFFSET := 0x1000
 

components/bootloader_support/component.mk

@@ -7,7 +7,9 @@ else
 COMPONENT_PRIV_INCLUDEDIRS := include_bootloader
 endif
 
-COMPONENT_SRCDIRS := src
+COMPONENT_SRCDIRS := src \
+			src/secure_boot_v2 \
+			src/secure_boot_v1
 
 ifndef IS_BOOTLOADER_BUILD
 COMPONENT_SRCDIRS += src/idf  # idf sub-directory contains platform agnostic IDF versions
@@ -33,15 +35,27 @@ COMPONENT_OBJEXCLUDE += src/bootloader_flash_config_esp32s2.o \
 			src/bootloader_random_esp32s3.o \
 			src/bootloader_random_esp32c3.o
 
-ifndef CONFIG_SECURE_SIGNED_APPS_ECDSA_SCHEME
-COMPONENT_OBJEXCLUDE += src/secure_boot_v1/secure_boot_signatures_bootloader.o \
-			src/secure_boot_v1/secure_boot_signatures_app.o
-endif
-
-ifndef CONFIG_SECURE_SIGNED_APPS_RSA_SCHEME
-COMPONENT_OBJEXCLUDE += src/secure_boot_v2/secure_boot_signatures_bootloader.o \
-			src/secure_boot_v2/secure_boot_signatures_app.o
-endif
+ifdef IS_BOOTLOADER_BUILD
+	ifndef CONFIG_SECURE_SIGNED_APPS_ECDSA_SCHEME
+		COMPONENT_OBJEXCLUDE += src/secure_boot_v1/secure_boot_signatures_bootloader.o
+	endif
+
+	ifndef CONFIG_SECURE_SIGNED_APPS_RSA_SCHEME
+		COMPONENT_OBJEXCLUDE += src/secure_boot_v2/secure_boot_signatures_bootloader.o
+	endif
+	COMPONENT_OBJEXCLUDE += src/secure_boot_v1/secure_boot_signatures_app.o \
+				src/secure_boot_v2/secure_boot_signatures_app.o
+else
+	ifndef CONFIG_SECURE_SIGNED_APPS_ECDSA_SCHEME
+		COMPONENT_OBJEXCLUDE += src/secure_boot_v1/secure_boot_signatures_app.o
+	endif
+
+	ifndef CONFIG_SECURE_SIGNED_APPS_RSA_SCHEME
+		COMPONENT_OBJEXCLUDE += src/secure_boot_v2/secure_boot_signatures_app.o
+	endif
+	COMPONENT_OBJEXCLUDE += src/secure_boot_v1/secure_boot_signatures_bootloader.o \
+				src/secure_boot_v2/secure_boot_signatures_bootloader.o
+endif # IS_BOOTLOADER_BUILD
 
 ifndef CONFIG_SECURE_BOOT
 COMPONENT_OBJEXCLUDE += src/$(IDF_TARGET)/secure_boot.o