build: Use linker directly instead of going thru compiler; ensure we are buildable with an llvm toolchain

decompressor/Makefile

@@ -7,16 +7,20 @@ endif
 TOOLCHAIN = x86_64-elf
 
 TOOLCHAIN_CC = $(TOOLCHAIN)-gcc
+TOOLCHAIN_LD = $(TOOLCHAIN)-ld
 TOOLCHAIN_OBJCOPY = $(TOOLCHAIN)-objcopy
 
 ifeq ($(shell which $(TOOLCHAIN_CC)), )
 TOOLCHAIN_CC := gcc
 endif
+ifeq ($(shell which $(TOOLCHAIN_LD)), )
+TOOLCHAIN_LD := ld
+endif
 ifeq ($(shell which $(TOOLCHAIN_OBJCOPY)), )
 TOOLCHAIN_OBJCOPY := objcopy
 endif
 
-CFLAGS = -flto -Os -pipe -Wall -Wextra -Werror
+CFLAGS = -Os -pipe -Wall -Wextra -Werror
 
 INTERNAL_CFLAGS = \
 	-m32 \
@@ -36,16 +40,11 @@ INTERNAL_CFLAGS = \
 	-MMD \
 	-I.
 
-LDFLAGS = -flto -Os
+LDFLAGS =
 
 INTERNAL_LDFLAGS = \
-	-m32 \
+	-melf_i386 \
-	-march=i386 \
-	-Wl,-melf_i386 \
 	-nostdlib \
-	-no-pie \
-	-fno-pic \
-	-fno-pie \
 	-z max-page-size=0x1000 \
 	-static \
 	-Tlinker.ld
@@ -65,7 +64,7 @@ builddir:
 	for i in $(OBJ); do mkdir -p `dirname $$i`; done
 
 $(BUILDDIR)/decompressor.bin: $(OBJ)
-	$(TOOLCHAIN_CC) $(OBJ) $(LDFLAGS) $(INTERNAL_LDFLAGS) -o $(BUILDDIR)/decompressor.elf
+	$(TOOLCHAIN_LD) $(OBJ) $(LDFLAGS) $(INTERNAL_LDFLAGS) -o $(BUILDDIR)/decompressor.elf
 	$(TOOLCHAIN_OBJCOPY) -O binary $(BUILDDIR)/decompressor.elf $@
 
 -include $(HEADER_DEPS)

decompressor/linker.ld

@@ -25,6 +25,18 @@ SECTIONS
         bss_end = .;
     }
 
+    .symtab : {
+        *(.symtab)
+    }
+
+    .strtab : {
+        *(.strtab)
+    }
+
+    .shstrtab : {
+        *(.shstrtab)
+    }
+
     /DISCARD/ : {
         *(*)
     }

stage23/Makefile

@@ -16,6 +16,7 @@ endif
 TOOLCHAIN = x86_64-elf
 
 TOOLCHAIN_CC = $(TOOLCHAIN)-gcc
+TOOLCHAIN_LD = $(TOOLCHAIN)-ld
 TOOLCHAIN_OBJCOPY = $(TOOLCHAIN)-objcopy
 TOOLCHAIN_OBJDUMP = $(TOOLCHAIN)-objdump
 TOOLCHAIN_READELF = $(TOOLCHAIN)-readelf
@@ -23,6 +24,9 @@ TOOLCHAIN_READELF = $(TOOLCHAIN)-readelf
 ifeq ($(shell which $(TOOLCHAIN_CC)), )
 TOOLCHAIN_CC := gcc
 endif
+ifeq ($(shell which $(TOOLCHAIN_LD)), )
+TOOLCHAIN_LD := ld
+endif
 ifeq ($(shell which $(TOOLCHAIN_OBJCOPY)), )
 TOOLCHAIN_OBJCOPY := objcopy
 endif
@@ -88,32 +92,25 @@ ifeq ($(TARGET), uefi)
 		-mno-red-zone
 endif
 
-LDFLAGS = -O3 -g
+LDFLAGS =
 
 INTERNAL_LDFLAGS := \
-	-fno-pic \
-	-fno-lto \
 	-nostdlib \
 	-z max-page-size=0x1000
 
 ifeq ($(TARGET), bios)
 	INTERNAL_LDFLAGS += \
-		-m32 \
+		-melf_i386 \
-		-march=i386 \
+		-static
-		-fno-pie \
-		-Wl,-melf_i386 \
-		-static \
-		-no-pie
 endif
 
 ifeq ($(TARGET), uefi)
 	INTERNAL_LDFLAGS += \
-		-m64 \
+		-melf_x86_64 \
-		-march=x86-64 \
+		-static \
-		-fpie \
+		-pie \
-		-Wl,-melf_x86_64 \
+		--no-dynamic-linker \
-		-Wl,-static,-pie,--no-dynamic-linker,-ztext \
+		-ztext
-		-static-pie
 endif
 
 .PHONY: all clean builddir
@@ -175,18 +172,18 @@ $(BUILDDIR)/limine.sys: $(BUILDDIR)/limine.elf
 	$(TOOLCHAIN_OBJCOPY) -O binary $< $@
 
 $(BUILDDIR)/limine_stage2only.elf: $(OBJ)
-	$(TOOLCHAIN_CC) $^ $(LDFLAGS) $(INTERNAL_LDFLAGS) -Tlinker_stage2only.ld -o $@ || \
+	$(TOOLCHAIN_LD) $^ $(LDFLAGS) $(INTERNAL_LDFLAGS) -Tlinker_stage2only.ld -o $@ || \
 		( echo "This error may mean that stage 2 was trying to use stage 3 symbols before loading stage 3" && \
 		  false )
 
 $(BUILDDIR)/limine_nomap.elf: $(OBJ) $(BUILDDIR)/font.o $(BUILDDIR)/sys/smp_trampoline.o $(BUILDDIR)/stage2.map.o
-	$(TOOLCHAIN_CC) $^ $(LDFLAGS) $(INTERNAL_LDFLAGS) -Tlinker_nomap.ld -o $@
+	$(TOOLCHAIN_LD) $^ $(LDFLAGS) $(INTERNAL_LDFLAGS) -Tlinker_nomap.ld -o $@
 
 $(BUILDDIR)/limine.elf: $(OBJ) $(BUILDDIR)/font.o $(BUILDDIR)/sys/smp_trampoline.o $(BUILDDIR)/stage2.map.o $(BUILDDIR)/full.map.o
-	$(TOOLCHAIN_CC) $^ $(LDFLAGS) $(INTERNAL_LDFLAGS) -Tlinker.ld -o $@
+	$(TOOLCHAIN_LD) $^ $(LDFLAGS) $(INTERNAL_LDFLAGS) -Tlinker.ld -o $@
 
 $(BUILDDIR)/limine_dbg.elf: $(OBJ) $(BUILDDIR)/font.o $(BUILDDIR)/sys/smp_trampoline.o $(BUILDDIR)/stage2.map.o $(BUILDDIR)/full.map.o
-	$(TOOLCHAIN_CC) $^ $(LDFLAGS) $(INTERNAL_LDFLAGS) -Tlinker_dbg.ld -o $@
+	$(TOOLCHAIN_LD) $^ $(LDFLAGS) $(INTERNAL_LDFLAGS) -Tlinker_dbg.ld -o $@
 
 endif
 
@@ -201,7 +198,7 @@ $(BUILDDIR)/BOOTX64.EFI: $(BUILDDIR)/limine_efi.elf
 	$(TOOLCHAIN_OBJCOPY) -j .text -j .sdata -j .data -j .dynamic -j .dynsym -j .rel -j .rela -j .rel.* -j .rela.* -j .reloc --target efi-app-x86_64 --subsystem=10 $< $@
 
 $(BUILDDIR)/limine_efi_nomap.elf: $(OBJ) $(BUILDDIR)/font.o $(BUILDDIR)/sys/smp_trampoline.o
-	$(TOOLCHAIN_CC) \
+	$(TOOLCHAIN_LD) \
 		-Tlinker_uefi_nomap.ld \
 		../gnu-efi/gnuefi/crt0-efi-x86_64.o \
 		../gnu-efi/gnuefi/libgnuefi.a \
@@ -209,7 +206,7 @@ $(BUILDDIR)/limine_efi_nomap.elf: $(OBJ) $(BUILDDIR)/font.o $(BUILDDIR)/sys/smp_
 		$^ $(LDFLAGS) $(INTERNAL_LDFLAGS) -o $@
 
 $(BUILDDIR)/limine_efi.elf: $(OBJ) $(BUILDDIR)/font.o $(BUILDDIR)/sys/smp_trampoline.o $(BUILDDIR)/full.map.o
-	$(TOOLCHAIN_CC) \
+	$(TOOLCHAIN_LD) \
 		-Tlinker_uefi.ld \
 		../gnu-efi/gnuefi/crt0-efi-x86_64.o \
 		../gnu-efi/gnuefi/libgnuefi.a \

stage23/linker.ld

@@ -44,6 +44,18 @@ SECTIONS
         bss_end = .;
     }
 
+    .symtab : {
+        *(.symtab)
+    }
+
+    .strtab : {
+        *(.strtab)
+    }
+
+    .shstrtab : {
+        *(.shstrtab)
+    }
+
     /DISCARD/ : {
         *(*)
     }

stage23/linker_dbg.ld

@@ -44,7 +44,67 @@ SECTIONS
         bss_end = .;
     }
 
+    .symtab : {
+        *(.symtab)
+    }
+
+    .strtab : {
+        *(.strtab)
+    }
+
+    .shstrtab : {
+        *(.shstrtab)
+    }
+
+    .debug_aranges : {
+        *(.debug_aranges)
+    }
+
+    .debug_pubnames : {
+        *(.debug_pubnames)
+    }
+
+    .debug_info : {
+        *(.debug_info)
+    }
+
+    .debug_abbrev : {
+        *(.debug_abbrev)
+    }
+
+    .debug_line : {
+        *(.debug_line)
+    }
+
+    .debug_loclists : {
+        *(.debug_loclists)
+    }
+
+    .debug_rnglists : {
+        *(.debug_rnglists)
+    }
+
+    .debug_frame : {
+        *(.debug_frame)
+    }
+
+    .debug_loc : {
+        *(.debug_loc)
+    }
+
+    .debug_ranges : {
+        *(.debug_ranges)
+    }
+
+    .debug_str : {
+        *(.debug_str)
+    }
+
+    .debug_line_str : {
+        *(.debug_line_str)
+    }
+
     /DISCARD/ : {
-        *(.eh_frame*)
+        *(*)
     }
 }

stage23/linker_nomap.ld

@@ -44,6 +44,18 @@ SECTIONS
         bss_end = .;
     }
 
+    .symtab : {
+        *(.symtab)
+    }
+
+    .strtab : {
+        *(.strtab)
+    }
+
+    .shstrtab : {
+        *(.shstrtab)
+    }
+
     /DISCARD/ : {
         *(*)
     }

stage23/linker_stage2only.ld

@@ -35,6 +35,18 @@ SECTIONS
         bss_end = .;
     }
 
+    .symtab : {
+        *(.symtab)
+    }
+
+    .strtab : {
+        *(.strtab)
+    }
+
+    .shstrtab : {
+        *(.shstrtab)
+    }
+
     /DISCARD/ : {
         *(*)
     }