Add support for debug builds

Apparently all I needed to do was disable function sections and LTO

Author: lambda-fairy

Cargo.toml

@@ -13,6 +13,9 @@ path = "efi"
 name = "akira"
 crate-type = ["staticlib"]
 
+[profile.dev]
+panic = "abort"
+
 [profile.release]
 panic = "abort"
 lto = true

Makefile

@@ -1,3 +1,6 @@
+# Either 'debug' or 'release'
+PROFILE := release
+
 TARGET := x86_64-efi-pe
 
 AR := $(TARGET)-ar
@@ -8,11 +11,12 @@ LD := $(TARGET)-ld
 # $2: Extra options
 cargo = \
 	OVERRIDE_TARGET=$(TARGET) \
-	OVERRIDE_PROFILE=release \
+	OVERRIDE_PROFILE=$(PROFILE) \
 	OVERRIDE_RUSTC=$(shell which rustc) \
 	OVERRIDE_RUSTDOC=$(shell which rustdoc) \
 	PATH="$(realpath rustc-override):$$PATH" \
-	cargo $1 --target $(realpath $(TARGET).json) --release $2
+	cargo $1 --target $(realpath $(TARGET).json) $(PROFILE_FLAG) $2
+PROFILE_FLAG := $(if $(filter release,$(PROFILE)),--release,)
 
 # Runs `cargo rustc` with the specified options
 # $1: Options passed to Cargo
@@ -32,7 +36,7 @@ all: akira.gpt akira.iso
 
 # Abbreviations for intermediate build files
 LIBCORE_RLIB := core/target/$(TARGET)/libcore.rlib
-LIBAKIRA_A := target/$(TARGET)/release/libakira.a
+LIBAKIRA_A := target/$(TARGET)/$(PROFILE)/libakira.a
 BOOTX64_EFI := build/efi/boot/bootx64.efi
 
 # When any of these files change, the main crate will be rebuilt

x86_64-efi-pe.json

@@ -5,6 +5,7 @@
     "os": "efi",
     "arch": "x86_64",
     "data-layout": "e-m:e-i64:64-f80:128-n8:16:32:64-S128",
+    "function-sections": false,
     "linker": "x86_64-efi-pe-ld",
     "ar": "x86_64-efi-pe-ar",
     "pre-link-args": ["-m64"],