diff --git a/0005-Workaround-multiple-definition-of-symbol-errors.patch b/0005-Workaround-multiple-definition-of-symbol-errors.patch new file mode 100644 index 0000000..b5bbad0 --- /dev/null +++ b/0005-Workaround-multiple-definition-of-symbol-errors.patch @@ -0,0 +1,109 @@ +From 951928f2cad5682c2844e6bd0f7201236c5d9b66 Mon Sep 17 00:00:00 2001 +From: Merlin Mathesius +Date: Wed, 13 May 2020 08:02:27 -0500 +Subject: [PATCH] Workaround multiple definition of symbol errors + +--- + com32/cmenu/Makefile | 2 +- + com32/elflink/ldlinux/Makefile | 2 +- + com32/gpllib/Makefile | 2 +- + com32/hdt/Makefile | 2 +- + core/Makefile | 2 +- + dos/Makefile | 2 +- + efi/Makefile | 2 +- + 7 files changed, 7 insertions(+), 7 deletions(-) + +diff --git a/com32/cmenu/Makefile b/com32/cmenu/Makefile +index b81b68ed..2ae989c4 100644 +--- a/com32/cmenu/Makefile ++++ b/com32/cmenu/Makefile +@@ -49,7 +49,7 @@ makeoutputdirs: + @mkdir -p $(OBJ)/libmenu + + libmenu/libmenu.elf: $(LIBMENU) +- $(LD) -shared $(LDFLAGS) -soname $(patsubst %.elf,%.c32,$(@F)) \ ++ $(LD) -shared $(LDFLAGS) -z muldefs -soname $(patsubst %.elf,%.c32,$(@F)) \ + -o $@ $^ + + tidy dist: +diff --git a/com32/elflink/ldlinux/Makefile b/com32/elflink/ldlinux/Makefile +index 87c0d362..2be2a01a 100644 +--- a/com32/elflink/ldlinux/Makefile ++++ b/com32/elflink/ldlinux/Makefile +@@ -33,7 +33,7 @@ endif + all: $(BTARGET) ldlinux_lnx.a + + ldlinux.elf : $(OBJS) +- $(LD) $(LDFLAGS) -soname $(SONAME) -o $@ $^ $(LIBS) ++ $(LD) $(LDFLAGS) -z muldefs -soname $(SONAME) -o $@ $^ $(LIBS) + + LNXCFLAGS += -D__export='__attribute__((visibility("default")))' + LNXLIBOBJS = get_key.lo +diff --git a/com32/gpllib/Makefile b/com32/gpllib/Makefile +index 1fec9145..2d764d0b 100644 +--- a/com32/gpllib/Makefile ++++ b/com32/gpllib/Makefile +@@ -24,7 +24,7 @@ makeoutputdirs: + $(addprefix $(OBJ),$(sort $(dir $(LIBOBJS)))),$(b)) + + libgpl.elf : $(LIBOBJS) +- $(LD) -shared $(LDFLAGS) -soname $(patsubst %.elf,%.c32,$(@F)) -o $@ $^ ++ $(LD) -shared $(LDFLAGS) -z muldefs -soname $(patsubst %.elf,%.c32,$(@F)) -o $@ $^ + + tidy dist clean: + find . \( -name \*.o -o -name .\*.d -o -name \*.tmp \) -print0 | \ +diff --git a/com32/hdt/Makefile b/com32/hdt/Makefile +index 61736d05..1d947857 100644 +--- a/com32/hdt/Makefile ++++ b/com32/hdt/Makefile +@@ -52,7 +52,7 @@ QEMU ?= qemu-kvm + all: $(MODULES) $(TESTFILES) + + hdt.elf : $(OBJS) $(LIBS) $(C_LIBS) +- $(LD) $(LDFLAGS) -o $@ $^ ++ $(LD) $(LDFLAGS) -z muldefs -o $@ $^ + + memtest: + -[ ! -f $(FLOPPY_DIR)/$(MEMTEST) ] && $(WGET) $(MEMTEST_URL) -O $(FLOPPY_DIR)/$(MEMTEST) +diff --git a/core/Makefile b/core/Makefile +index 46cb037c..f0cfcbe9 100644 +--- a/core/Makefile ++++ b/core/Makefile +@@ -156,7 +156,7 @@ LDSCRIPT = $(SRC)/$(ARCH)/syslinux.ld + NASM_ELF = elf + + %.elf: %.o $(LIBDEP) $(LDSCRIPT) $(AUXLIBS) +- $(LD) $(LDFLAGS) -pie -Bsymbolic \ ++ $(LD) $(LDFLAGS) -z muldefs -pie -Bsymbolic \ + -T $(LDSCRIPT) \ + --unresolved-symbols=report-all \ + -E --hash-style=gnu -M -o $@ $< \ +diff --git a/dos/Makefile b/dos/Makefile +index 4c930d19..5d1c72ca 100644 +--- a/dos/Makefile ++++ b/dos/Makefile +@@ -19,7 +19,7 @@ include $(MAKEDIR)/embedded.mk + CFLAGS += -D__MSDOS__ -mregparm=3 -DREGPARM=3 + # CFLAGS += -DDEBUG + +-LDFLAGS = -T $(SRC)/dosexe.ld ++LDFLAGS = -T $(SRC)/dosexe.ld -z muldefs + OPTFLAGS = -g + INCLUDES = -include code16.h -nostdinc -iwithprefix include \ + -I$(SRC) -I$(SRC)/.. -I$(SRC)/../libfat \ +diff --git a/efi/Makefile b/efi/Makefile +index bbf23f24..3dd922d5 100644 +--- a/efi/Makefile ++++ b/efi/Makefile +@@ -69,7 +69,7 @@ $(OBJS): | $(OBJ)/$(ARCH) + BTARGET = syslinux.efi + + syslinux.so: $(OBJS) $(CORE_OBJS) $(LIB_OBJS) +- $(LD) $(LDFLAGS) --strip-debug -o $@ $^ -lgnuefi -lefi ++ $(LD) $(LDFLAGS) -z muldefs --strip-debug -o $@ $^ -lgnuefi -lefi + + # We need to rename the .hash section because the EFI firmware + # linker really doesn't like it. +-- +2.25.1 + diff --git a/0006-Replace-builtin-strlen-that-appears-to-get-optimized.patch b/0006-Replace-builtin-strlen-that-appears-to-get-optimized.patch new file mode 100644 index 0000000..11160bb --- /dev/null +++ b/0006-Replace-builtin-strlen-that-appears-to-get-optimized.patch @@ -0,0 +1,40 @@ +From eae06bdce9468d7fde263de1c53f80f2faff0c9e Mon Sep 17 00:00:00 2001 +From: Merlin Mathesius +Date: Wed, 13 May 2020 11:58:37 -0500 +Subject: [PATCH] Replace builtin strlen that appears to get optimized away + +--- + dos/string.h | 12 +++++++++++- + 1 file changed, 11 insertions(+), 1 deletion(-) + +diff --git a/dos/string.h b/dos/string.h +index f648de2d..407d0233 100644 +--- a/dos/string.h ++++ b/dos/string.h +@@ -5,12 +5,22 @@ + #ifndef _STRING_H + #define _STRING_H + ++#include ++ + /* Standard routines */ + #define memcpy(a,b,c) __builtin_memcpy(a,b,c) + #define memmove(a,b,c) __builtin_memmove(a,b,c) + #define memset(a,b,c) __builtin_memset(a,b,c) + #define strcpy(a,b) __builtin_strcpy(a,b) +-#define strlen(a) __builtin_strlen(a) ++#define strlen(a) inline_strlen(a) ++ ++/* replacement for builtin strlen that appears to get optimized away */ ++static inline size_t inline_strlen(const char *str) ++{ ++ size_t l; ++ for (l = 0; *str++; l++); ++ return l; ++} + + /* This only returns true or false */ + static inline int memcmp(const void *__m1, const void *__m2, unsigned int __n) +-- +2.25.1 + diff --git a/PKGBUILD b/PKGBUILD index ae2ac75..c0da125 100644 --- a/PKGBUILD +++ b/PKGBUILD @@ -39,6 +39,8 @@ source=(git+https://repo.or.cz/syslinux.git#commit=$_commit 0016-strip-gnu-property.patch 0018-prevent-pow-optimization.patch 0025-reproducible-build.patch + 0005-Workaround-multiple-definition-of-symbol-errors.patch + 0006-Replace-builtin-strlen-that-appears-to-get-optimized.patch ) sha1sums=('SKIP' '1145f454bd297d373ad123425f93620c3e92f585' @@ -49,7 +51,9 @@ sha1sums=('SKIP' '4c3706e7a5620e450a6abb9238c08d7b39bb6945' 'f4a6768c7e5b8d02428ae550e37a7ca445ad1bb8' 'c94622eaa14ad9512e4f43b13302ba35d1787cbc' - '5b3878a1fff74bbb09ddbc66cc8afa38f34ed05c') + '5b3878a1fff74bbb09ddbc66cc8afa38f34ed05c' + '9c4842f9c252fb98eb73a699e58bebf8c04c12d5' + 'b116556f05dd8a4cfff09069465ba080cfb64880') _targets='bios efi64 efi32' @@ -72,6 +76,9 @@ prepare() { patch -p1 < ../0025-reproducible-build.patch + patch -p1 < ../0005-Workaround-multiple-definition-of-symbol-errors.patch + patch -p1 < ../0006-Replace-builtin-strlen-that-appears-to-get-optimized.patch + # do not swallow efi compilation output to make debugging easier sed 's|> /dev/null 2>&1||' -i efi/check-gnu-efi.sh