Linux.mk

#
# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.

CC     ?= gcc
CCC    ?= g++
RANLIB ?= ranlib

include $(CORE_DEPTH)/coreconf/UNIX.mk

#
# The default implementation strategy for Linux is now pthreads
#
ifneq ($(OS_TARGET),Android)
	USE_PTHREADS = 1
endif

ifeq ($(USE_PTHREADS),1)
	IMPL_STRATEGY = _PTH
endif

DEFAULT_COMPILER = gcc

ifeq ($(OS_TARGET),Android)
ifndef ANDROID_NDK
	$(error Must set ANDROID_NDK to the path to the android NDK first)
endif
ifndef ANDROID_TOOLCHAIN_VERSION
	$(error Must set ANDROID_TOOLCHAIN_VERSION to the requested version number)
endif
	ANDROID_PREFIX=$(OS_TEST)-linux-androideabi
	ANDROID_TARGET=$(ANDROID_PREFIX)-$(ANDROID_TOOLCHAIN_VERSION)
	# should autodetect which linux we are on, currently android only
	# supports linux-x86 prebuilts
	ANDROID_TOOLCHAIN=$(ANDROID_NDK)/toolchains/$(ANDROID_TARGET)/prebuilt/linux-x86
	ANDROID_SYSROOT=$(ANDROID_NDK)/platforms/android-$(OS_TARGET_RELEASE)/arch-$(OS_TEST)
	ANDROID_CC=$(ANDROID_TOOLCHAIN)/bin/$(ANDROID_PREFIX)-gcc
	ANDROID_CCC=$(ANDROID_TOOLCHAIN)/bin/$(ANDROID_PREFIX)-g++
        NSS_DISABLE_GTESTS=1
# internal tools need to be built with the native compiler
ifndef INTERNAL_TOOLS
	CC = $(ANDROID_CC) --sysroot=$(ANDROID_SYSROOT)
	CCC = $(ANDROID_CCC) --sysroot=$(ANDROID_SYSROOT)
	DEFAULT_COMPILER=$(ANDROID_PREFIX)-gcc
	ARCHFLAG = --sysroot=$(ANDROID_SYSROOT)
	DEFINES += -DNO_SYSINFO -DNO_FORK_CHECK -DANDROID
	CROSS_COMPILE = 1
endif
endif
ifeq (,$(filter-out ppc64 ppc64le,$(OS_TEST)))
	CPU_ARCH	= ppc
ifeq ($(USE_64),1)
	ARCHFLAG	= -m64
endif
else
ifeq ($(OS_TEST),alpha)
        OS_REL_CFLAGS   = -D_ALPHA_
	CPU_ARCH	= alpha
else
ifeq ($(OS_TEST),x86_64)
ifeq ($(USE_64),1)
	CPU_ARCH	= x86_64
	ARCHFLAG	= -m64
else
ifeq ($(USE_X32),1)
	CPU_ARCH	= x86_64
	ARCHFLAG	= -mx32
	64BIT_TAG	= _x32
else
	OS_REL_CFLAGS	= -Di386
	CPU_ARCH	= x86
	ARCHFLAG	= -m32
endif
endif
else
ifeq ($(OS_TEST),sparc64)
	CPU_ARCH        = sparc
else
ifeq (,$(filter-out arm% sa110,$(OS_TEST)))
	CPU_ARCH        = arm
else
ifeq (,$(filter-out parisc%,$(OS_TEST)))
	CPU_ARCH        = hppa
else
ifeq (,$(filter-out i%86,$(OS_TEST)))
	OS_REL_CFLAGS	= -Di386
	CPU_ARCH	= x86
else
ifeq ($(OS_TEST),sh4a)
	CPU_ARCH        = sh4
else
# $(OS_TEST) == m68k, ppc, ia64, sparc, s390, s390x, mips, sh3, sh4
	CPU_ARCH	= $(OS_TEST)
endif
endif
endif
endif
endif
endif
endif
endif


ifneq ($(OS_TARGET),Android)
LIBC_TAG		= _glibc
endif

ifdef BUILD_OPT
ifeq (11,$(ALLOW_OPT_CODE_SIZE)$(OPT_CODE_SIZE))
	OPTIMIZER = -Os
else
	OPTIMIZER = -O2
endif
ifdef MOZ_DEBUG_SYMBOLS
	ifdef MOZ_DEBUG_FLAGS
		OPTIMIZER += $(MOZ_DEBUG_FLAGS)
	else
		OPTIMIZER += -gdwarf-2
	endif
endif
endif

ifndef COMPILER_TAG
COMPILER_TAG := _$(CC_NAME)
endif

ifeq ($(USE_PTHREADS),1)
OS_PTHREAD = -lpthread 
endif

OS_CFLAGS		= $(DSO_CFLAGS) $(OS_REL_CFLAGS) $(ARCHFLAG) -pipe -ffunction-sections -fdata-sections -DHAVE_STRERROR
ifeq ($(KERNEL),Linux)
	OS_CFLAGS	+= -DLINUX -Dlinux
endif
OS_LIBS			= $(OS_PTHREAD) -ldl -lc

ifdef USE_PTHREADS
	DEFINES		+= -D_REENTRANT
endif

DSO_CFLAGS		= -fPIC
DSO_LDOPTS		= -shared $(ARCHFLAG) -Wl,--gc-sections
# The linker on Red Hat Linux 7.2 and RHEL 2.1 (GNU ld version 2.11.90.0.8)
# incorrectly reports undefined references in the libraries we link with, so
# we don't use -z defs there.
# Also, -z defs conflicts with Address Sanitizer, which emits relocations
# against the libsanitizer runtime built into the main executable.
ZDEFS_FLAG		= -Wl,-z,defs
ifneq ($(USE_ASAN),1)
DSO_LDOPTS		+= $(if $(findstring 2.11.90.0.8,$(shell ld -v)),,$(ZDEFS_FLAG))
endif
LDFLAGS			+= $(ARCHFLAG)

# On Maemo, we need to use the -rpath-link flag for even the standard system
# library directories.
ifdef _SBOX_DIR
LDFLAGS			+= -Wl,-rpath-link,/usr/lib:/lib
endif

G++INCLUDES		= -I/usr/include/g++

#
# Always set CPU_TAG on Linux.
#
CPU_TAG = _$(CPU_ARCH)

#
# On Linux 2.6 or later, build libfreebl3.so with no NSPR and libnssutil3.so
# dependencies by default.  Set FREEBL_NO_DEPEND to 0 in the environment to
# override this.
#
ifneq ($(OS_TARGET),Android)
ifeq (2.6,$(firstword $(sort 2.6 $(OS_RELEASE))))
ifndef FREEBL_NO_DEPEND
FREEBL_NO_DEPEND = 1
FREEBL_LOWHASH = 1
endif
endif
endif

USE_SYSTEM_ZLIB = 1
ZLIB_LIBS = -lz

# The -rpath '$$ORIGIN' linker option instructs this library to search for its
# dependencies in the same directory where it resides.
ifeq ($(BUILD_SUN_PKG), 1)
ifeq ($(USE_64), 1)
RPATH = -Wl,-rpath,'$$ORIGIN:/opt/sun/private/lib64:/opt/sun/private/lib'
else
RPATH = -Wl,-rpath,'$$ORIGIN:/opt/sun/private/lib'
endif
endif

MKSHLIB         = $(CC) $(DSO_LDOPTS) -Wl,-soname -Wl,$(@:$(OBJDIR)/%.so=%.so) $(RPATH)

ifdef MAPFILE
	MKSHLIB += -Wl,--version-script,$(MAPFILE)
endif
PROCESS_MAP_FILE = grep -v ';-' $< | \
        sed -e 's,;+,,' -e 's; DATA ;;' -e 's,;;,,' -e 's,;.*,;,' > $@

ifeq ($(OS_RELEASE),2.4)
DEFINES += -DNO_FORK_CHECK
endif

ifdef USE_GCOV
OS_CFLAGS += --coverage
LDFLAGS += --coverage
DSO_LDOPTS += --coverage
endif

include $(CORE_DEPTH)/coreconf/sanitizers.mk