lh | 9ed821d | 2023-04-07 01:36:19 -0700 | [diff] [blame] | 1 | # Rules.make for uClibc |
| 2 | # |
| 3 | # Copyright (C) 2000-2008 Erik Andersen <andersen@uclibc.org> |
| 4 | # |
| 5 | # Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball. |
| 6 | # |
| 7 | |
| 8 | # make nano-doc |
| 9 | # FOO = bar -- recursively expanded variable. Value is remebered verbatim. |
| 10 | # If it contains references to other variables, these references |
| 11 | # are expanded whenever this variable is _substituted_. |
| 12 | # FOO := bar -- simply expanded variable. Right hand is expanded when |
| 13 | # the variable is _defined_. Therefore faster than =. |
| 14 | # FOO ?= bar -- set a value only if it is not already set |
| 15 | # (behaves as =, not :=). |
| 16 | # FOO += bar -- append; if FOO is not defined, acts like = (not :=). |
| 17 | |
| 18 | |
| 19 | # check for proper make version |
| 20 | ifneq ($(findstring x3.7,x$(MAKE_VERSION)),) |
| 21 | $(error Your make is too old $(MAKE_VERSION). Go get at least 3.80) |
| 22 | endif |
| 23 | |
| 24 | #----------------------------------------------------------- |
| 25 | # This file contains rules which are shared between multiple |
| 26 | # Makefiles. All normal configuration options live in the |
| 27 | # file named ".config". Don't mess with this file unless |
| 28 | # you know what you are doing. |
| 29 | |
| 30 | |
| 31 | #----------------------------------------------------------- |
| 32 | # If you are running a cross compiler, you will want to set |
| 33 | # 'CROSS_COMPILE' to something more interesting ... Target |
| 34 | # architecture is determined by asking the CC compiler what |
| 35 | # arch it compiles things for, so unless your compiler is |
| 36 | # broken, you should not need to specify TARGET_ARCH. |
| 37 | # |
| 38 | # Most people will set this stuff on the command line, i.e. |
| 39 | # make CROSS_COMPILE=arm-linux- |
| 40 | # will build uClibc for 'arm'. |
| 41 | # CROSS is still supported for backward compatibily only |
| 42 | |
| 43 | CROSS_COMPILE ?= $(CROSS) |
| 44 | |
| 45 | CC = $(CROSS_COMPILE)gcc |
| 46 | AR = $(CROSS_COMPILE)ar |
| 47 | LD = $(CROSS_COMPILE)ld |
| 48 | NM = $(CROSS_COMPILE)nm |
| 49 | OBJDUMP = $(CROSS_COMPILE)objdump |
| 50 | STRIPTOOL = $(CROSS_COMPILE)strip |
| 51 | |
| 52 | INSTALL = install |
| 53 | LN = ln |
| 54 | RM = rm -f |
| 55 | TAR = tar |
| 56 | SED = sed |
| 57 | AWK = awk |
| 58 | |
| 59 | STRIP_FLAGS ?= -x -R .note -R .comment |
| 60 | |
| 61 | ## unused? if yes, remove after 0.9.31 |
| 62 | ## UNIFDEF := $(top_builddir)extra/scripts/unifdef |
| 63 | |
| 64 | # Select the compiler needed to build binaries for your development system |
| 65 | HOSTCC = gcc |
| 66 | BUILD_CFLAGS = -Os -Wall |
| 67 | |
| 68 | #--------------------------------------------------------- |
| 69 | # Nothing beyond this point should ever be touched by mere |
| 70 | # mortals. Unless you hang out with the gods, you should |
| 71 | # probably leave all this stuff alone. |
| 72 | |
| 73 | # strip quotes |
| 74 | qstrip = $(strip $(subst ",,$(1))) |
| 75 | #")) |
| 76 | |
| 77 | # Pull in the user's uClibc configuration |
| 78 | ifeq ($(filter $(noconfig_targets),$(MAKECMDGOALS)),) |
| 79 | -include $(top_builddir).config |
| 80 | endif |
| 81 | TARGET_ARCH:=$(call qstrip,$(TARGET_ARCH)) |
| 82 | ifeq ($(TARGET_ARCH),) |
| 83 | ARCH ?= $(shell uname -m | $(SED) -e s/i.86/i386/ \ |
| 84 | -e s/sun.*/sparc/ -e s/sparc.*/sparc/ \ |
| 85 | -e s/arm.*/arm/ -e s/sa110/arm/ \ |
| 86 | -e s/sh.*/sh/ \ |
| 87 | -e s/s390x/s390/ -e s/parisc.*/hppa/ \ |
| 88 | -e s/ppc.*/powerpc/ -e s/mips.*/mips/ \ |
| 89 | -e s/xtensa.*/xtensa/ ) |
| 90 | else |
| 91 | ARCH = $(TARGET_ARCH) |
| 92 | endif |
| 93 | export ARCH |
| 94 | |
| 95 | # Make certain these contain a final "/", but no "//"s. |
| 96 | TARGET_SUBARCH:=$(call qstrip,$(TARGET_SUBARCH)) |
| 97 | RUNTIME_PREFIX:=$(strip $(subst //,/, $(subst ,/, $(call qstrip,$(RUNTIME_PREFIX))))) |
| 98 | DEVEL_PREFIX:=$(strip $(subst //,/, $(subst ,/, $(call qstrip,$(DEVEL_PREFIX))))) |
| 99 | MULTILIB_DIR:=$(strip $(subst //,/, $(subst ,/, $(call qstrip,$(MULTILIB_DIR))))) |
| 100 | KERNEL_HEADERS:=$(strip $(subst //,/, $(subst ,/, $(call qstrip,$(KERNEL_HEADERS))))) |
| 101 | export RUNTIME_PREFIX DEVEL_PREFIX KERNEL_HEADERS MULTILIB_DIR |
| 102 | |
| 103 | |
| 104 | # Now config hard core |
| 105 | MAJOR_VERSION := 0 |
| 106 | MINOR_VERSION := 9 |
| 107 | SUBLEVEL := 33 |
| 108 | EXTRAVERSION :=.2 |
| 109 | VERSION := $(MAJOR_VERSION).$(MINOR_VERSION).$(SUBLEVEL) |
| 110 | ABI_VERSION := $(MAJOR_VERSION) |
| 111 | ifneq ($(EXTRAVERSION),) |
| 112 | VERSION := $(VERSION)$(EXTRAVERSION) |
| 113 | endif |
| 114 | # Ensure consistent sort order, 'gcc -print-search-dirs' behavior, etc. |
| 115 | LC_ALL := C |
| 116 | export MAJOR_VERSION MINOR_VERSION SUBLEVEL VERSION ABI_VERSION LC_ALL |
| 117 | |
| 118 | LIBC := libc |
| 119 | SHARED_LIBNAME := $(LIBC).so.$(ABI_VERSION) |
| 120 | UBACKTRACE_DSO := libubacktrace.so.$(ABI_VERSION) |
| 121 | ifneq ($(findstring $(TARGET_ARCH) , hppa64 ia64 mips64 powerpc64 s390x sparc64 x86_64 ),) |
| 122 | UCLIBC_LDSO_NAME := ld64-uClibc |
| 123 | ARCH_NATIVE_BIT := 64 |
| 124 | else |
| 125 | UCLIBC_LDSO_NAME := ld-uClibc |
| 126 | ARCH_NATIVE_BIT := 32 |
| 127 | endif |
| 128 | UCLIBC_LDSO := $(UCLIBC_LDSO_NAME).so.$(ABI_VERSION) |
| 129 | NONSHARED_LIBNAME := uclibc_nonshared.a |
| 130 | libc := $(top_builddir)lib/$(SHARED_LIBNAME) |
| 131 | libc.depend := $(top_builddir)lib/$(SHARED_LIBNAME:.$(ABI_VERSION)=) |
| 132 | ifneq ($(ARCH_HAS_NO_SHARED),y) |
| 133 | libdl.depend := $(top_builddir)lib/libdl.so |
| 134 | endif |
| 135 | ifneq ($(HAS_NO_THREADS),y) |
| 136 | libpthread.depend := $(top_builddir)lib/libpthread.so |
| 137 | endif |
| 138 | interp := $(top_builddir)lib/interp.os |
| 139 | ldso := $(top_builddir)lib/$(UCLIBC_LDSO) |
| 140 | headers_dep := $(top_builddir)include/bits/sysnum.h |
| 141 | sub_headers := $(headers_dep) |
| 142 | |
| 143 | #LIBS :=$(interp) -L$(top_builddir)lib -lc |
| 144 | LIBS := $(interp) -L$(top_builddir)lib $(libc:.$(ABI_VERSION)=) |
| 145 | |
| 146 | # Make sure DESTDIR and PREFIX can be used to install |
| 147 | # PREFIX is a uClibcism while DESTDIR is a common GNUism |
| 148 | ifndef PREFIX |
| 149 | PREFIX = $(DESTDIR) |
| 150 | endif |
| 151 | |
| 152 | ifneq ($(HAVE_SHARED),y) |
| 153 | libc := |
| 154 | interp := |
| 155 | ldso := |
| 156 | endif |
| 157 | |
| 158 | comma:=, |
| 159 | space:= # |
| 160 | |
| 161 | ifeq ($(CROSS_COMPILE),) |
| 162 | CROSS_COMPILE=$(call qstrip,$(CROSS_COMPILER_PREFIX)) |
| 163 | endif |
| 164 | |
| 165 | # A nifty macro to make testing gcc features easier |
| 166 | check_gcc=$(shell \ |
| 167 | if $(CC) $(1) -S -o /dev/null -xc /dev/null > /dev/null 2>&1; \ |
| 168 | then echo "$(1)"; else echo "$(2)"; fi) |
| 169 | check_as=$(shell \ |
| 170 | if $(CC) -Wa,$(1) -Wa,-Z -c -o /dev/null -xassembler /dev/null > /dev/null 2>&1; \ |
| 171 | then echo "-Wa,$(1)"; fi) |
| 172 | check_ld=$(shell \ |
| 173 | if $(LD) $(1) -o /dev/null -b binary /dev/null > /dev/null 2>&1; \ |
| 174 | then echo "$(1)"; fi) |
| 175 | |
| 176 | # Use variable indirection here so that we can have variable |
| 177 | # names with fun chars in them like equal signs |
| 178 | define check-tool-var |
| 179 | ifeq ($(filter $(clean_targets) CLEAN_%,$(MAKECMDGOALS)),) |
| 180 | _v = $(2)_$(3) |
| 181 | ifndef $$(_v) |
| 182 | $$(_v) := $$(call $(1),$(subst %, ,$(3))) |
| 183 | export $$(_v) |
| 184 | endif |
| 185 | endif |
| 186 | endef |
| 187 | |
| 188 | # Usage: check-gcc-var,<flag> |
| 189 | # Check the C compiler to see if it supports <flag>. |
| 190 | # Export the variable CFLAG_<flag> if it does. |
| 191 | define check-gcc-var |
| 192 | $(call check-tool-var,check_gcc,CFLAG,$(1)) |
| 193 | endef |
| 194 | # Usage: check-as-var,<flag> |
| 195 | # Check the assembler to see if it supports <flag>. Export the |
| 196 | # variable ASFLAG_<flag> if it does (for invoking the assembler), |
| 197 | # as well CFLAG_-Wa<flag> (for invoking the compiler driver). |
| 198 | define check-as-var |
| 199 | $(call check-tool-var,check_as,ASFLAG,$(1)) |
| 200 | _v = CFLAG_-Wa$(1) |
| 201 | export $$(_v) = $$(if $$(ASFLAG_$(1)),-Wa$$(comma)$$(ASFLAG_$(1))) |
| 202 | endef |
| 203 | # Usage: check-ld-var,<flag> |
| 204 | # Check the linker to see if it supports <flag>. Export the |
| 205 | # variable LDFLAG_<flag> if it does (for invoking the linker), |
| 206 | # as well CFLAG_-Wl<flag> (for invoking the compiler driver). |
| 207 | define check-ld-var |
| 208 | $(call check-tool-var,check_ld,LDFLAG,$(1)) |
| 209 | _v = CFLAG_-Wl$(1) |
| 210 | export $$(_v) = $$(if $$(LDFLAG_$(1)),-Wl$$(comma)$$(LDFLAG_$(1))) |
| 211 | endef |
| 212 | # Usage: cache-output-var,<variable>,<shell command> |
| 213 | # Execute <shell command> and cache the output in <variable>. |
| 214 | define cache-output-var |
| 215 | ifndef $(1) |
| 216 | $(1) := $$(shell $(2)) |
| 217 | export $(1) |
| 218 | endif |
| 219 | endef |
| 220 | |
| 221 | |
| 222 | ARFLAGS:=cr |
| 223 | |
| 224 | |
| 225 | # Flags in OPTIMIZATION are used only for non-debug builds |
| 226 | |
| 227 | OPTIMIZATION:= |
| 228 | # Use '-Os' optimization if available, else use -O2, allow Config to override |
| 229 | ifneq ($(TARGET_ARCH),m68k) |
| 230 | $(eval $(call check-gcc-var,-Os)) |
| 231 | ifneq ($(CFLAG_-Os),) |
| 232 | OPTIMIZATION += $(CFLAG_-Os) |
| 233 | else |
| 234 | $(eval $(call check-gcc-var,-O2)) |
| 235 | OPTIMIZATION += $(CFLAG_-O2) |
| 236 | endif |
| 237 | endif |
| 238 | # Use the gcc 3.4 -funit-at-a-time optimization when available |
| 239 | $(eval $(call check-gcc-var,-funit-at-a-time)) |
| 240 | OPTIMIZATION += $(CFLAG_-funit-at-a-time) |
| 241 | # shrinks code by about 0.1% |
| 242 | $(eval $(call check-gcc-var,-fmerge-all-constants)) |
| 243 | $(eval $(call check-gcc-var,-fstrict-aliasing)) |
| 244 | OPTIMIZATION += $(CFLAG_-fmerge-all-constants) $(CFLAG_-fstrict-aliasing) |
| 245 | |
| 246 | $(eval $(call cache-output-var,GCC_VER,$(CC) -dumpversion)) |
| 247 | GCC_VER := $(subst ., ,$(GCC_VER)) |
| 248 | GCC_MAJOR_VER ?= $(word 1,$(GCC_VER)) |
| 249 | #GCC_MINOR_VER ?= $(word 2,$(GCC_VER)) |
| 250 | |
| 251 | ifeq ($(GCC_MAJOR_VER),4) |
| 252 | # shrinks code, results are from 4.0.2 |
| 253 | # 0.36% |
| 254 | $(eval $(call check-gcc-var,-fno-tree-loop-optimize)) |
| 255 | OPTIMIZATION += $(CFLAG_-fno-tree-loop-optimize) |
| 256 | # 0.34% |
| 257 | $(eval $(call check-gcc-var,-fno-tree-dominator-opts)) |
| 258 | OPTIMIZATION += $(CFLAG_-fno-tree-dominator-opts) |
| 259 | # 0.1% |
| 260 | $(eval $(call check-gcc-var,-fno-strength-reduce)) |
| 261 | OPTIMIZATION += $(CFLAG_-fno-strength-reduce) |
| 262 | endif |
| 263 | |
| 264 | |
| 265 | # CPU_CFLAGS-y contain options which are not warnings, |
| 266 | # not include or library paths, and not optimizations. |
| 267 | |
| 268 | # Why -funsigned-char: I hunted a bug related to incorrect |
| 269 | # sign extension of 'char' type for 10 hours straight. Not fun. |
| 270 | CPU_CFLAGS-y := -funsigned-char -fno-builtin |
| 271 | |
| 272 | $(eval $(call check-gcc-var,-fno-asm)) |
| 273 | CPU_CFLAGS-y += $(CFLAG_-fno-asm) |
| 274 | |
| 275 | LDADD_LIBFLOAT= |
| 276 | ifeq ($(UCLIBC_HAS_SOFT_FLOAT),y) |
| 277 | # If -msoft-float isn't supported, we want an error anyway. |
| 278 | # Hmm... might need to revisit this for arm since it has 2 different |
| 279 | # soft float encodings. |
| 280 | ifneq ($(TARGET_ARCH),nios) |
| 281 | ifneq ($(TARGET_ARCH),nios2) |
| 282 | ifneq ($(TARGET_ARCH),sh) |
| 283 | ifneq ($(TARGET_ARCH),c6x) |
| 284 | CPU_CFLAGS-y += -msoft-float |
| 285 | endif |
| 286 | endif |
| 287 | endif |
| 288 | endif |
| 289 | ifeq ($(TARGET_ARCH),arm) |
| 290 | # No longer needed with current toolchains, but leave it here for now. |
| 291 | # If anyone is actually still using gcc 2.95 (say), they can uncomment it. |
| 292 | # LDADD_LIBFLOAT=-lfloat |
| 293 | endif |
| 294 | endif |
| 295 | |
| 296 | $(eval $(call check-gcc-var,-std=gnu99)) |
| 297 | CPU_CFLAGS-y += $(CFLAG_-std=gnu99) |
| 298 | |
| 299 | CPU_CFLAGS-$(UCLIBC_FORMAT_SHARED_FLAT) += -mid-shared-library |
| 300 | CPU_CFLAGS-$(UCLIBC_FORMAT_FLAT_SEP_DATA) += -msep-data |
| 301 | |
| 302 | CPU_LDFLAGS-$(ARCH_LITTLE_ENDIAN) += -Wl,-EL |
| 303 | CPU_LDFLAGS-$(ARCH_BIG_ENDIAN) += -Wl,-EB |
| 304 | |
| 305 | PICFLAG-y := -fPIC |
| 306 | PICFLAG-$(UCLIBC_FORMAT_FDPIC_ELF) := -mfdpic |
| 307 | PICFLAG-$(UCLIBC_FORMAT_DSBT_ELF) := -mdsbt -fpic |
| 308 | PICFLAG := $(PICFLAG-y) |
| 309 | PIEFLAG_NAME:=-fPIE |
| 310 | |
| 311 | # Some nice CPU specific optimizations |
| 312 | ifeq ($(TARGET_ARCH),i386) |
| 313 | $(eval $(call check-gcc-var,-fomit-frame-pointer)) |
| 314 | OPTIMIZATION += $(CFLAG_-fomit-frame-pointer) |
| 315 | |
| 316 | ifeq ($(CONFIG_386)$(CONFIG_486)$(CONFIG_586)$(CONFIG_586MMX),y) |
| 317 | # Non-SSE capable processor. |
| 318 | # NB: this may make SSE insns segfault! |
| 319 | # -O1 -march=pentium3, -Os -msse etc are known to be affected. |
| 320 | # See http://gcc.gnu.org/bugzilla/show_bug.cgi?id=13685 |
| 321 | # -m32 is needed if host is 64-bit |
| 322 | OPTIMIZATION+=$(call check_gcc,-m32 -mpreferred-stack-boundary=2,) |
| 323 | else |
| 324 | $(eval $(call check-gcc-var,-mpreferred-stack-boundary=4)) |
| 325 | OPTIMIZATION += $(CFLAG_-mpreferred-stack-boundary=4) |
| 326 | endif |
| 327 | |
| 328 | # Choice of alignment (please document why!) |
| 329 | # -falign-labels: in-line labels |
| 330 | # (reachable by normal code flow, aligning will insert nops |
| 331 | # which will be executed - may even make things slower) |
| 332 | # -falign-jumps: reachable only by a jump |
| 333 | # Generic: no alignment at all (smallest code) |
| 334 | GCC_FALIGN=$(call check_gcc,-falign-functions=1 -falign-jumps=1 -falign-labels=1 -falign-loops=1,-malign-jumps=1 -malign-loops=1) |
| 335 | ifeq ($(CONFIG_K7),y) |
| 336 | # Align functions to four bytes, use default for jumps and loops (why?) |
| 337 | GCC_FALIGN=$(call check_gcc,-falign-functions=4 -falign-labels=1,-malign-functions=4) |
| 338 | endif |
| 339 | ifeq ($(CONFIG_CRUSOE),y) |
| 340 | # Use compiler's default for functions, jumps and loops (why?) |
| 341 | GCC_FALIGN=$(call check_gcc,-falign-functions=0 -falign-labels=1,-malign-functions=0) |
| 342 | endif |
| 343 | ifeq ($(CONFIG_CYRIXIII),y) |
| 344 | # Use compiler's default for functions, jumps and loops (why?) |
| 345 | GCC_FALIGN=$(call check_gcc,-falign-functions=0 -falign-labels=1,-malign-functions=0) |
| 346 | endif |
| 347 | OPTIMIZATION+=$(GCC_FALIGN) |
| 348 | |
| 349 | # Putting each function and data object into its own section |
| 350 | # allows for kbytes of less text if users link against static uclibc |
| 351 | # using ld --gc-sections. |
| 352 | # ld 2.18 can't do that (yet?) for shared libraries, so we itself |
| 353 | # do not use --gc-sections at shared lib link time. |
| 354 | # However, in combination with sections being sorted by alignment |
| 355 | # it does result in much reduced padding: |
| 356 | # text data bss dec hex |
| 357 | # 235319 1472 5992 242783 3b45f old.so |
| 358 | # 234104 1472 5980 241556 3af94 new.so |
| 359 | # Without -ffunction-sections, all functions will get aligned |
| 360 | # to 4 byte boundary by as/ld. This is arguably a bug in as. |
| 361 | # It specifies 4 byte align for .text even if not told to do so: |
| 362 | # Idx Name Size VMA LMA File off Algn |
| 363 | # 0 .text xxxxxxxx 00000000 00000000 xxxxxxxx 2**2 <===! |
| 364 | CPU_CFLAGS-y += $(CFLAG_-ffunction-sections) $(CFLAG_-fdata-sections) |
| 365 | CPU_LDFLAGS-y += $(CFLAG_-Wl--sort-common) |
| 366 | $(eval $(call check-ld-var,--sort-section=alignment)) |
| 367 | CPU_LDFLAGS-y += $(CFLAG_-Wl--sort-section=alignment) |
| 368 | |
| 369 | CPU_LDFLAGS-y+=-m32 |
| 370 | CPU_CFLAGS-y+=-m32 |
| 371 | CPU_CFLAGS-$(CONFIG_386)+=-march=i386 |
| 372 | CPU_CFLAGS-$(CONFIG_486)+=-march=i486 |
| 373 | CPU_CFLAGS-$(CONFIG_ELAN)+=-march=i486 |
| 374 | CPU_CFLAGS-$(CONFIG_586)+=-march=i586 |
| 375 | CPU_CFLAGS-$(CONFIG_586MMX)+=$(call check_gcc,-march=pentium-mmx,-march=i586) |
| 376 | CPU_CFLAGS-$(CONFIG_686)+=-march=i686 |
| 377 | CPU_CFLAGS-$(CONFIG_PENTIUMII)+=$(call check_gcc,-march=pentium2,-march=i686) |
| 378 | CPU_CFLAGS-$(CONFIG_PENTIUMIII)+=$(call check_gcc,-march=pentium3,-march=i686) |
| 379 | CPU_CFLAGS-$(CONFIG_PENTIUM4)+=$(call check_gcc,-march=pentium4,-march=i686) |
| 380 | CPU_CFLAGS-$(CONFIG_K6)+=$(call check_gcc,-march=k6,-march=i586) |
| 381 | CPU_CFLAGS-$(CONFIG_K7)+=$(call check_gcc,-march=athlon,-march=i686) |
| 382 | CPU_CFLAGS-$(CONFIG_CRUSOE)+=-march=i686 |
| 383 | CPU_CFLAGS-$(CONFIG_WINCHIPC6)+=$(call check_gcc,-march=winchip-c6,-march=i586) |
| 384 | CPU_CFLAGS-$(CONFIG_WINCHIP2)+=$(call check_gcc,-march=winchip2,-march=i586) |
| 385 | CPU_CFLAGS-$(CONFIG_CYRIXIII)+=$(call check_gcc,-march=c3,-march=i486) |
| 386 | CPU_CFLAGS-$(CONFIG_NEHEMIAH)+=$(call check_gcc,-march=c3-2,-march=i686) |
| 387 | endif |
| 388 | |
| 389 | ifeq ($(TARGET_ARCH),sparc) |
| 390 | CPU_CFLAGS-$(CONFIG_SPARC_V7)+=-mcpu=v7 |
| 391 | CPU_CFLAGS-$(CONFIG_SPARC_V8)+=-mcpu=v8 |
| 392 | CPU_CFLAGS-$(CONFIG_SPARC_V9)+=-mcpu=v9 |
| 393 | CPU_CFLAGS-$(CONFIG_SPARC_V9B)+=$(call check_gcc,-mcpu=v9b,-mcpu=ultrasparc) |
| 394 | endif |
| 395 | |
| 396 | ifeq ($(TARGET_ARCH),arm) |
| 397 | CPU_CFLAGS-$(ARCH_LITTLE_ENDIAN)+=-mlittle-endian |
| 398 | CPU_CFLAGS-$(ARCH_BIG_ENDIAN)+=-mbig-endian |
| 399 | CPU_CFLAGS-$(COMPILE_IN_THUMB_MODE)+=-mthumb |
| 400 | endif |
| 401 | |
| 402 | ifeq ($(TARGET_ARCH),mips) |
| 403 | OPTIMIZATION+=-mno-split-addresses |
| 404 | CPU_CFLAGS-$(CONFIG_MIPS_ISA_1)+=-mips1 |
| 405 | CPU_CFLAGS-$(CONFIG_MIPS_ISA_2)+=-mips2 -mtune=mips2 |
| 406 | CPU_CFLAGS-$(CONFIG_MIPS_ISA_3)+=-mips3 -mtune=mips3 |
| 407 | CPU_CFLAGS-$(CONFIG_MIPS_ISA_4)+=-mips4 -mtune=mips4 |
| 408 | CPU_CFLAGS-$(CONFIG_MIPS_ISA_MIPS32)+=-mips32 -mtune=mips32 |
| 409 | CPU_CFLAGS-$(CONFIG_MIPS_ISA_MIPS32R2)+=-march=mips32r2 -mtune=mips32r2 |
| 410 | CPU_CFLAGS-$(CONFIG_MIPS_ISA_MIPS64)+=-mips64 -mtune=mips32 |
| 411 | ifeq ($(strip $(ARCH_BIG_ENDIAN)),y) |
| 412 | CPU_LDFLAGS-$(CONFIG_MIPS_N64_ABI)+=-Wl,-melf64btsmip |
| 413 | CPU_LDFLAGS-$(CONFIG_MIPS_O32_ABI)+=-Wl,-melf32btsmip |
| 414 | endif |
| 415 | ifeq ($(strip $(ARCH_LITTLE_ENDIAN)),y) |
| 416 | CPU_LDFLAGS-$(CONFIG_MIPS_N64_ABI)+=-Wl,-melf64ltsmip |
| 417 | CPU_LDFLAGS-$(CONFIG_MIPS_O32_ABI)+=-Wl,-melf32ltsmip |
| 418 | endif |
| 419 | CPU_CFLAGS-$(CONFIG_MIPS_N64_ABI)+=-mabi=64 |
| 420 | CPU_CFLAGS-$(CONFIG_MIPS_O32_ABI)+=-mabi=32 |
| 421 | CPU_CFLAGS-$(CONFIG_MIPS_N32_ABI)+=-mabi=n32 |
| 422 | endif |
| 423 | |
| 424 | ifeq ($(TARGET_ARCH),nios) |
| 425 | OPTIMIZATION+=-funaligned-struct-hack |
| 426 | CPU_LDFLAGS-y+=-Wl,-m32 |
| 427 | CPU_CFLAGS-y+=-Wl,-m32 |
| 428 | endif |
| 429 | |
| 430 | ifeq ($(TARGET_ARCH),sh) |
| 431 | $(eval $(call check-gcc-var,-mprefergot)) |
| 432 | OPTIMIZATION += $(CFLAG_-mprefergot) |
| 433 | CPU_CFLAGS-$(ARCH_LITTLE_ENDIAN)+=-ml |
| 434 | CPU_CFLAGS-$(ARCH_BIG_ENDIAN)+=-mb |
| 435 | CPU_CFLAGS-$(CONFIG_SH2)+=-m2 |
| 436 | CPU_CFLAGS-$(CONFIG_SH3)+=-m3 |
| 437 | ifeq ($(UCLIBC_HAS_FPU),y) |
| 438 | CPU_CFLAGS-$(CONFIG_SH2A)+=-m2a |
| 439 | CPU_CFLAGS-$(CONFIG_SH4)+=-m4 |
| 440 | else |
| 441 | CPU_CFLAGS-$(CONFIG_SH2A)+=-m2a-nofpu |
| 442 | CPU_CFLAGS-$(CONFIG_SH4)+=-m4-nofpu |
| 443 | endif |
| 444 | endif |
| 445 | |
| 446 | ifeq ($(TARGET_ARCH),sh64) |
| 447 | CPU_CFLAGS-$(ARCH_LITTLE_ENDIAN):=-ml |
| 448 | CPU_CFLAGS-$(ARCH_BIG_ENDIAN):=-mb |
| 449 | CPU_CFLAGS-$(CONFIG_SH5)+=-m5-32media |
| 450 | endif |
| 451 | |
| 452 | ifeq ($(TARGET_ARCH),h8300) |
| 453 | SYMBOL_PREFIX=_ |
| 454 | CPU_LDFLAGS-$(CONFIG_H8300H)+= -Wl,-ms8300h |
| 455 | CPU_LDFLAGS-$(CONFIG_H8S) += -Wl,-ms8300s |
| 456 | CPU_CFLAGS-$(CONFIG_H8300H) += -mh -mint32 |
| 457 | CPU_CFLAGS-$(CONFIG_H8S) += -ms -mint32 |
| 458 | endif |
| 459 | |
| 460 | ifeq ($(TARGET_ARCH),i960) |
| 461 | OPTIMIZATION+=-mh -mint32 #-fsigned-char |
| 462 | endif |
| 463 | |
| 464 | ifeq ($(TARGET_ARCH),e1) |
| 465 | OPTIMIZATION+=-mgnu-param |
| 466 | endif |
| 467 | |
| 468 | ifeq ($(TARGET_ARCH),cris) |
| 469 | CPU_LDFLAGS-$(CONFIG_CRIS)+=-Wl,-mcrislinux |
| 470 | CPU_LDFLAGS-$(CONFIG_CRISV32)+=-Wl,-mcrislinux |
| 471 | CPU_CFLAGS-$(CONFIG_CRIS)+=-mlinux |
| 472 | PICFLAG:=-fpic |
| 473 | PIEFLAG_NAME:=-fpie |
| 474 | endif |
| 475 | |
| 476 | ifeq ($(TARGET_ARCH),m68k) |
| 477 | # -fPIC is only supported for 68020 and above. It is not supported |
| 478 | # for 68000, 68010, or Coldfire. |
| 479 | PICFLAG:=-fpic |
| 480 | PIEFLAG_NAME:=-fpie |
| 481 | endif |
| 482 | |
| 483 | ifeq ($(TARGET_ARCH),powerpc) |
| 484 | # PowerPC can hold 8192 entries in its GOT with -fpic which is more than |
| 485 | # enough. Therefore use -fpic which will reduce code size and generates |
| 486 | # faster code. |
| 487 | PICFLAG:=-fpic |
| 488 | PIEFLAG_NAME:=-fpie |
| 489 | PPC_HAS_REL16:=$(shell echo -e "\t.text\n\taddis 11,30,_GLOBAL_OFFSET_TABLE_-.@ha" | $(CC) -c -x assembler -o /dev/null - 2> /dev/null && echo -n y || echo -n n) |
| 490 | CPU_CFLAGS-$(PPC_HAS_REL16)+= -DHAVE_ASM_PPC_REL16 |
| 491 | CPU_CFLAGS-$(CONFIG_E500) += "-D__NO_MATH_INLINES" |
| 492 | |
| 493 | endif |
| 494 | |
| 495 | ifeq ($(TARGET_ARCH),bfin) |
| 496 | SYMBOL_PREFIX=_ |
| 497 | ifeq ($(UCLIBC_FORMAT_FDPIC_ELF),y) |
| 498 | CPU_CFLAGS-y:=-mfdpic |
| 499 | CPU_LDFLAGS-y += -Wl,-melf32bfinfd |
| 500 | PICFLAG:=-fpic |
| 501 | PIEFLAG_NAME:=-fpie |
| 502 | endif |
| 503 | ifeq ($(UCLIBC_FORMAT_SHARED_FLAT),y) |
| 504 | PICFLAG := -mleaf-id-shared-library |
| 505 | endif |
| 506 | endif |
| 507 | |
| 508 | ifeq ($(TARGET_ARCH),frv) |
| 509 | CPU_LDFLAGS-$(CONFIG_FRV)+=-Wl,-melf32frvfd |
| 510 | # Using -pie causes the program to have an interpreter, which is |
| 511 | # forbidden, so we must make do with -shared. Unfortunately, |
| 512 | # -shared by itself would get us global function descriptors |
| 513 | # and calls through PLTs, dynamic resolution of symbols, etc, |
| 514 | # which would break as well, but -Bsymbolic comes to the rescue. |
| 515 | export LDPIEFLAG:=-shared -Wl,-Bsymbolic |
| 516 | UCLIBC_LDSO=ld.so.1 |
| 517 | endif |
| 518 | |
| 519 | ifeq ($(strip $(TARGET_ARCH)),avr32) |
| 520 | CPU_CFLAGS-$(CONFIG_AVR32_AP7) += -march=ap |
| 521 | CPU_CFLAGS-$(CONFIG_LINKRELAX) += -mrelax |
| 522 | CPU_LDFLAGS-$(CONFIG_LINKRELAX) += --relax |
| 523 | endif |
| 524 | |
| 525 | ifeq ($(TARGET_ARCH),i960) |
| 526 | SYMBOL_PREFIX=_ |
| 527 | endif |
| 528 | |
| 529 | ifeq ($(TARGET_ARCH),v850) |
| 530 | SYMBOL_PREFIX=_ |
| 531 | endif |
| 532 | |
| 533 | ifeq ($(TARGET_ARCH),c6x) |
| 534 | PIEFLAG:= |
| 535 | CPU_CFLAGS-$(CONFIG_TMS320C64X) += -march=c64x |
| 536 | CPU_CFLAGS-$(CONFIG_TMS320C64XPLUS) += -march=c64x+ |
| 537 | CPU_CFLAGS-$(ARCH_LITTLE_ENDIAN)+=-mlittle-endian |
| 538 | CPU_CFLAGS-$(ARCH_BIG_ENDIAN)+=-mbig-endian |
| 539 | CPU_LDFLAGS-y += $(CPU_CFLAGS) |
| 540 | endif |
| 541 | |
| 542 | $(eval $(call check-gcc-var,$(PIEFLAG_NAME))) |
| 543 | PIEFLAG := $(CFLAG_$(PIEFLAG_NAME)) |
| 544 | ifeq ($(PIEFLAG),) |
| 545 | PIEFLAG := $(PICFLAG) |
| 546 | endif |
| 547 | # We need to keep track of both the CC PIE flag (above) as |
| 548 | # well as the LD PIE flag (below) because we can't rely on |
| 549 | # gcc passing -pie if we used -fPIE. We need to directly use -pie |
| 550 | # instead of -Wl,-pie as gcc picks up the wrong startfile/endfile |
| 551 | $(eval $(call cache-output-var,LDPIEFLAG,$(LD) --help 2>/dev/null | grep -q -- -pie && echo "-pie")) |
| 552 | |
| 553 | # Check for --as-needed support in linker |
| 554 | ifndef LD_FLAG_ASNEEDED |
| 555 | _LD_FLAG_ASNEEDED:=$(shell $(LD) --help 2>/dev/null | grep -- --as-needed) |
| 556 | ifneq ($(_LD_FLAG_ASNEEDED),) |
| 557 | export LD_FLAG_ASNEEDED:=--as-needed |
| 558 | endif |
| 559 | endif |
| 560 | ifndef LD_FLAG_NO_ASNEEDED |
| 561 | ifdef LD_FLAG_ASNEEDED |
| 562 | export LD_FLAG_NO_ASNEEDED:=--no-as-needed |
| 563 | endif |
| 564 | endif |
| 565 | ifndef CC_FLAG_ASNEEDED |
| 566 | ifdef LD_FLAG_ASNEEDED |
| 567 | export CC_FLAG_ASNEEDED:=-Wl,$(LD_FLAG_ASNEEDED) |
| 568 | endif |
| 569 | endif |
| 570 | ifndef CC_FLAG_NO_ASNEEDED |
| 571 | ifdef LD_FLAG_NO_ASNEEDED |
| 572 | export CC_FLAG_NO_ASNEEDED:=-Wl,$(LD_FLAG_NO_ASNEEDED) |
| 573 | endif |
| 574 | endif |
| 575 | link.asneeded = $(if $(findstring yy,$(CC_FLAG_ASNEEDED)$(CC_FLAG_NO_ASNEEDED)),$(CC_FLAG_ASNEEDED) $(1) $(CC_FLAG_NO_ASNEEDED)) |
| 576 | |
| 577 | # Check for AS_NEEDED support in linker script (binutils>=2.16.1 has it) |
| 578 | ifndef ASNEEDED |
| 579 | export ASNEEDED:=$(shell $(LD) --help 2>/dev/null | grep -q -- --as-needed && echo "AS_NEEDED ( $(UCLIBC_LDSO) )" || echo "$(UCLIBC_LDSO)") |
| 580 | ifeq ($(UCLIBC_HAS_BACKTRACE),y) |
| 581 | # Only used in installed libc.so linker script |
| 582 | UBACKTRACE_FULL_NAME := $(RUNTIME_PREFIX)lib/$(UBACKTRACE_DSO) |
| 583 | export UBACKTRACE_ASNEEDED:=$(shell $(LD) --help 2>/dev/null | grep -q -- --as-needed && echo "AS_NEEDED ( $(UBACKTRACE_FULL_NAME) )" || echo "$(UBACKTRACE_FULL_NAME)") |
| 584 | else |
| 585 | export UBACKTRACE_ASNEEDED:="" |
| 586 | endif |
| 587 | endif |
| 588 | |
| 589 | # Add a bunch of extra pedantic annoyingly strict checks |
| 590 | WARNING_FLAGS = -Wstrict-prototypes -Wstrict-aliasing |
| 591 | ifeq ($(EXTRA_WARNINGS),y) |
| 592 | WARNING_FLAGS += \ |
| 593 | -Wformat=2 \ |
| 594 | -Wmissing-noreturn \ |
| 595 | -Wmissing-format-attribute \ |
| 596 | -Wmissing-prototypes \ |
| 597 | -Wmissing-declarations \ |
| 598 | -Wnested-externs \ |
| 599 | -Wnonnull \ |
| 600 | -Wold-style-declaration \ |
| 601 | -Wold-style-definition \ |
| 602 | -Wshadow \ |
| 603 | -Wundef |
| 604 | # Works only w/ gcc-3.4 and up, can't be checked for gcc-3.x w/ check_gcc() |
| 605 | WARNING_FLAGS-gcc-4 += -Wdeclaration-after-statement |
| 606 | endif |
| 607 | WARNING_FLAGS += $(WARNING_FLAGS-gcc-$(GCC_MAJOR_VER)) |
| 608 | $(foreach w,$(WARNING_FLAGS),$(eval $(call check-gcc-var,$(w)))) |
| 609 | XWARNINGS = $(call qstrip,$(WARNINGS)) $(foreach w,$(WARNING_FLAGS),$(CFLAG_$(w))) |
| 610 | |
| 611 | CPU_CFLAGS=$(call qstrip,$(CPU_CFLAGS-y)) |
| 612 | |
| 613 | # Save the tested flag in a single variable and force it to be |
| 614 | # evaluated just once. Then use that computed value. |
| 615 | $(eval $(call check-gcc-var,-fno-stack-protector)) |
| 616 | SSP_DISABLE_FLAGS ?= $(CFLAG_-fno-stack-protector) |
| 617 | ifeq ($(UCLIBC_BUILD_SSP),y) |
| 618 | $(eval $(call check-gcc-var,-fno-stack-protector-all)) |
| 619 | $(eval $(call check-gcc-var,-fstack-protector)) |
| 620 | $(eval $(call check-gcc-var,-fstack-protector-all)) |
| 621 | SSP_CFLAGS := $(CFLAG_-fno-stack-protector-all) |
| 622 | SSP_CFLAGS += $(CFLAG_-fstack-protector) |
| 623 | SSP_ALL_CFLAGS ?= $(CFLAG_-fstack-protector-all) |
| 624 | else |
| 625 | SSP_CFLAGS := $(SSP_DISABLE_FLAGS) |
| 626 | endif |
| 627 | |
| 628 | $(eval $(call check-gcc-var,-nostdlib)) |
| 629 | |
| 630 | # Collect all CFLAGS components |
| 631 | CFLAGS := -include $(top_srcdir)include/libc-symbols.h \ |
| 632 | $(XWARNINGS) $(CPU_CFLAGS) $(SSP_CFLAGS) \ |
| 633 | -nostdinc -I$(top_builddir)include -I$(top_srcdir)include -I. \ |
| 634 | -I$(top_srcdir)libc/sysdeps/linux \ |
| 635 | -I$(top_srcdir)libc/sysdeps/linux/$(TARGET_ARCH) |
| 636 | |
| 637 | # We need this to be checked within libc-symbols.h |
| 638 | ifneq ($(HAVE_SHARED),y) |
| 639 | CFLAGS += -DSTATIC |
| 640 | endif |
| 641 | |
| 642 | $(eval $(call check-ld-var,--warn-once)) |
| 643 | $(eval $(call check-ld-var,--sort-common)) |
| 644 | $(eval $(call check-ld-var,--discard-all)) |
| 645 | LDFLAGS_NOSTRIP:=$(CPU_LDFLAGS-y) -shared \ |
| 646 | -Wl,--warn-common $(CFLAG_-Wl--warn-once) -Wl,-z,combreloc |
| 647 | # binutils-2.16.1 warns about ignored sections, 2.16.91.0.3 and newer are ok |
| 648 | #$(eval $(call check-ld-var,--gc-sections)) |
| 649 | #LDFLAGS_NOSTRIP += $(LDFLAG_--gc-sections) |
| 650 | |
| 651 | $(eval $(call check-gcc-var,-fdata-sections)) |
| 652 | $(eval $(call check-gcc-var,-ffunction-sections)) |
| 653 | |
| 654 | ifeq ($(UCLIBC_BUILD_RELRO),y) |
| 655 | LDFLAGS_NOSTRIP+=-Wl,-z,relro |
| 656 | endif |
| 657 | |
| 658 | ifeq ($(UCLIBC_BUILD_NOW),y) |
| 659 | LDFLAGS_NOSTRIP+=-Wl,-z,now |
| 660 | endif |
| 661 | |
| 662 | ifeq ($(LDSO_GNU_HASH_SUPPORT),y) |
| 663 | # Be sure that binutils support it |
| 664 | $(eval $(call check-ld-var,--hash-style=gnu)) |
| 665 | ifeq ($(LDFLAG_--hash-style=gnu),) |
| 666 | ifneq ($(filter-out $(clean_targets) CLEAN_% install_headers headers-y,$(MAKECMDGOALS)),) |
| 667 | $(error Your binutils do not support --hash-style option, while you want to use it) |
| 668 | endif |
| 669 | else |
| 670 | LDFLAGS_NOSTRIP += $(CFLAG_-Wl--hash-style=gnu) |
| 671 | endif |
| 672 | endif |
| 673 | |
| 674 | LDFLAGS:=$(LDFLAGS_NOSTRIP) -Wl,-z,defs |
| 675 | ifeq ($(DODEBUG),y) |
| 676 | CFLAGS += -O0 -g3 -DDEBUG |
| 677 | else |
| 678 | CFLAGS += $(OPTIMIZATION) -g3 |
| 679 | endif |
| 680 | ifeq ($(DOSTRIP),y) |
| 681 | LDFLAGS += -Wl,-s |
| 682 | else |
| 683 | STRIPTOOL := true -Stripping_disabled |
| 684 | endif |
| 685 | ifneq ($(strip $(UCLIBC_EXTRA_CFLAGS)),"") |
| 686 | CFLAGS += $(call qstrip,$(UCLIBC_EXTRA_CFLAGS)) |
| 687 | endif |
| 688 | |
| 689 | ifeq ($(DOMULTI),y) |
| 690 | # we try to compile all sources at once into an object (IMA), but |
| 691 | # gcc-3.3.x does not support it |
| 692 | # gcc-3.4.x supports it, but does not need and support --combine. though fails on many sources |
| 693 | # gcc-4.0.x supports it, supports the --combine flag, but does not need it |
| 694 | # gcc-4.1(200506xx) supports it, but needs the --combine flag, else libs are useless |
| 695 | ifeq ($(GCC_MAJOR_VER),3) |
| 696 | DOMULTI:=n |
| 697 | else |
| 698 | $(eval $(call check-gcc-var,--combine)) |
| 699 | CFLAGS += $(CFLAG_--combine) |
| 700 | endif |
| 701 | else |
| 702 | DOMULTI:=n |
| 703 | endif |
| 704 | |
| 705 | ifneq ($(strip $(UCLIBC_EXTRA_LDFLAGS)),"") |
| 706 | LDFLAGS += $(call qstrip,$(UCLIBC_EXTRA_LDFLAGS)) |
| 707 | endif |
| 708 | |
| 709 | ifeq ($(UCLIBC_HAS_THREADS),y) |
| 710 | ifeq ($(UCLIBC_HAS_THREADS_NATIVE),y) |
| 711 | PTNAME := nptl |
| 712 | CFLAGS += -DHAVE_FORCED_UNWIND |
| 713 | else |
| 714 | ifeq ($(LINUXTHREADS_OLD),y) |
| 715 | PTNAME := linuxthreads.old |
| 716 | else |
| 717 | PTNAME := linuxthreads |
| 718 | endif |
| 719 | endif |
| 720 | PTDIR := libpthread/$(PTNAME) |
| 721 | # set up system dependencies include dirs (NOTE: order matters!) |
| 722 | ifeq ($(UCLIBC_HAS_THREADS_NATIVE),y) |
| 723 | PTINC:= -I$(top_builddir)$(PTDIR) \ |
| 724 | -I$(top_srcdir)$(PTDIR) \ |
| 725 | $(if $(TARGET_ARCH),-I$(top_srcdir)$(PTDIR)/sysdeps/unix/sysv/linux/$(TARGET_ARCH)/$(TARGET_SUBARCH)) \ |
| 726 | -I$(top_srcdir)$(PTDIR)/sysdeps/unix/sysv/linux/$(TARGET_ARCH) \ |
| 727 | -I$(top_builddir)$(PTDIR)/sysdeps/$(TARGET_ARCH) \ |
| 728 | -I$(top_srcdir)$(PTDIR)/sysdeps/$(TARGET_ARCH) \ |
| 729 | -I$(top_builddir)$(PTDIR)/sysdeps/unix/sysv/linux \ |
| 730 | -I$(top_srcdir)$(PTDIR)/sysdeps/unix/sysv/linux \ |
| 731 | -I$(top_srcdir)$(PTDIR)/sysdeps/pthread \ |
| 732 | -I$(top_srcdir)$(PTDIR)/sysdeps/pthread/bits \ |
| 733 | -I$(top_srcdir)$(PTDIR)/sysdeps/generic \ |
| 734 | -I$(top_srcdir)ldso/ldso/$(TARGET_ARCH) \ |
| 735 | -I$(top_srcdir)ldso/include |
| 736 | # |
| 737 | # Test for TLS if NPTL support was selected. |
| 738 | # |
| 739 | GCC_HAS_TLS=$(shell \ |
| 740 | echo "extern __thread int foo;" | $(CC) -o /dev/null -S -xc - 2>&1) |
| 741 | ifneq ($(GCC_HAS_TLS),) |
| 742 | gcc_tls_test_fail: |
| 743 | @echo "####"; |
| 744 | @echo "#### Your compiler does not support TLS and you are trying to build uClibc"; |
| 745 | @echo "#### with NPTL support. Upgrade your binutils and gcc to versions which"; |
| 746 | @echo "#### support TLS for your architecture. Do not contact uClibc maintainers"; |
| 747 | @echo "#### about this problem."; |
| 748 | @echo "####"; |
| 749 | @echo "#### Exiting..."; |
| 750 | @echo "####"; |
| 751 | @exit 1; |
| 752 | endif |
| 753 | else |
| 754 | PTINC := \ |
| 755 | -I$(top_srcdir)$(PTDIR)/sysdeps/unix/sysv/linux/$(TARGET_ARCH) \ |
| 756 | -I$(top_srcdir)$(PTDIR)/sysdeps/$(TARGET_ARCH) \ |
| 757 | -I$(top_srcdir)$(PTDIR)/sysdeps/unix/sysv/linux \ |
| 758 | -I$(top_srcdir)$(PTDIR)/sysdeps/pthread \ |
| 759 | -I$(top_srcdir)$(PTDIR) \ |
| 760 | -I$(top_srcdir)libpthread |
| 761 | endif |
| 762 | CFLAGS+=$(PTINC) |
| 763 | else |
| 764 | PTNAME := |
| 765 | PTINC := |
| 766 | endif |
| 767 | CFLAGS += -I$(top_srcdir)libc/sysdeps/linux/common |
| 768 | CFLAGS += -I$(KERNEL_HEADERS) |
| 769 | |
| 770 | #CFLAGS += -iwithprefix include-fixed -iwithprefix include |
| 771 | $(eval $(call cache-output-var,CC_IPREFIX,$(CC) -print-file-name=include)) |
| 772 | CC_INC := -isystem $(dir $(CC_IPREFIX))include-fixed -isystem $(CC_IPREFIX) |
| 773 | CFLAGS += $(CC_INC) |
| 774 | |
| 775 | ifneq ($(DOASSERTS),y) |
| 776 | CFLAGS+=-DNDEBUG |
| 777 | endif |
| 778 | |
| 779 | ifeq ($(SYMBOL_PREFIX),_) |
| 780 | CFLAGS+=-D__UCLIBC_UNDERSCORES__ |
| 781 | endif |
| 782 | |
| 783 | # Keep the check_as from being needlessly executed |
| 784 | ifeq ($(UCLIBC_BUILD_NOEXECSTACK),y) |
| 785 | $(eval $(call check-as-var,--noexecstack)) |
| 786 | endif |
| 787 | ASFLAGS = $(ASFLAG_--noexecstack) |
| 788 | |
| 789 | LIBGCC_CFLAGS ?= $(CFLAGS) $(CPU_CFLAGS-y) |
| 790 | $(eval $(call cache-output-var,LIBGCC,$(CC) $(LIBGCC_CFLAGS) -print-libgcc-file-name)) |
| 791 | LIBGCC_DIR:=$(dir $(LIBGCC)) |
| 792 | |
| 793 | # moved from libpthread/linuxthreads |
| 794 | ifeq ($(UCLIBC_CTOR_DTOR),y) |
| 795 | SHARED_START_FILES:=$(top_builddir)lib/crti.o $(LIBGCC_DIR)crtbeginS.o |
| 796 | SHARED_END_FILES:=$(LIBGCC_DIR)crtendS.o $(top_builddir)lib/crtn.o |
| 797 | endif |
| 798 | |
| 799 | LOCAL_INSTALL_PATH := install_dir |