mirror of https://github.com/ipxe/ipxe.git
[build] Allow for per-architecture cross-compilation prefixes
We currently require the variable CROSS (or CROSS_COMPILE) to be set to specify the global cross-compilation prefix. This becomes cumbersome when developing across multiple CPU architectures, requiring frequent editing of build command lines and preventing incompatible architectures from being built with a single command. Allow a default cross-compilation prefix for each architecture to be specified via the CROSS_COMPILE_<arch> variables. These may then be provided as environment variables, e.g. using export CROSS_COMPILE_arm32=arm-linux-gnu- export CROSS_COMPILE_arm64=aarch64-linux-gnu- export CROSS_COMPILE_loong64=loongarch64-linux-gnu- export CROSS_COMPILE_riscv32=riscv64-linux-gnu- export CROSS_COMPILE_riscv64=riscv64-linux-gnu- This change requires some portions of the Makefile to be rearranged, to allow for the fact that $(CROSS_COMPILE) may not have been set until the build directory has been parsed to determine the CPU architecture. Signed-off-by: Michael Brown <mcb30@ipxe.org>pull/1330/head
Michael Brown
parent
19f44d2998
commit
8fc11d8a4a
20
src/Makefile
20
src/Makefile
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@ -26,16 +26,16 @@ PRINTF := printf
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PERL := perl
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PERL := perl
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PYTHON := python
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PYTHON := python
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TRUE := true
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TRUE := true
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CC := $(CROSS_COMPILE)gcc
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CC = $(CROSS_COMPILE)gcc
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CPP := $(CC) -E
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CPP = $(CC) -E
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AS := $(CROSS_COMPILE)as
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AS = $(CROSS_COMPILE)as
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LD := $(CROSS_COMPILE)ld
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LD = $(CROSS_COMPILE)ld
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SIZE := $(CROSS_COMPILE)size
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SIZE = $(CROSS_COMPILE)size
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AR := $(CROSS_COMPILE)ar
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AR = $(CROSS_COMPILE)ar
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RANLIB := $(CROSS_COMPILE)ranlib
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RANLIB = $(CROSS_COMPILE)ranlib
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OBJCOPY := $(CROSS_COMPILE)objcopy
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OBJCOPY = $(CROSS_COMPILE)objcopy
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NM := $(CROSS_COMPILE)nm
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NM = $(CROSS_COMPILE)nm
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OBJDUMP := $(CROSS_COMPILE)objdump
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OBJDUMP = $(CROSS_COMPILE)objdump
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OPENSSL := openssl
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OPENSSL := openssl
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CSPLIT := csplit
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CSPLIT := csplit
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PARSEROM := ./util/parserom.pl
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PARSEROM := ./util/parserom.pl
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@ -3,6 +3,20 @@
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# This file contains various boring housekeeping functions that would
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# This file contains various boring housekeeping functions that would
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# otherwise seriously clutter up the main Makefile.
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# otherwise seriously clutter up the main Makefile.
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###############################################################################
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#
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# Make syntax does not allow use of comma or space in certain places.
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# This ugly workaround is suggested in the manual.
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#
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COMMA := ,
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EMPTY :=
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SPACE := $(EMPTY) $(EMPTY)
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HASH := \#
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define NEWLINE
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endef
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###############################################################################
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###############################################################################
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#
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#
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# Find a usable "echo -e" substitute.
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# Find a usable "echo -e" substitute.
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@ -68,56 +82,6 @@ HOST_OS := $(shell uname -s)
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hostos :
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hostos :
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@$(ECHO) $(HOST_OS)
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@$(ECHO) $(HOST_OS)
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###############################################################################
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#
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# Determine compiler
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CCDEFS := $(shell $(CC) -E -x c -c /dev/null -dM | cut -d" " -f2)
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ccdefs:
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@$(ECHO) $(CCDEFS)
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ifeq ($(filter __GNUC__,$(CCDEFS)),__GNUC__)
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CCTYPE := gcc
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endif
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cctype:
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@$(ECHO) $(CCTYPE)
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###############################################################################
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#
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# Check for tools that can cause failed builds
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#
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ifeq ($(CCTYPE),gcc)
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GCC_2_96_BANNER := $(shell $(CC) -v 2>&1 | grep -is 'gcc version 2\.96')
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ifneq ($(GCC_2_96_BANNER),)
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$(warning gcc 2.96 is unsuitable for compiling iPXE)
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$(warning Use gcc 2.95 or a newer version instead)
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$(error Unsuitable build environment found)
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endif
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endif
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PERL_UNICODE_CHECK := $(shell $(PERL) -e 'use bytes; print chr(255)' | wc -c)
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ifeq ($(PERL_UNICODE_CHECK),2)
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$(warning Your Perl version has a Unicode handling bug)
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$(warning Execute this command before building iPXE:)
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$(warning export LANG=$${LANG%.UTF-8})
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$(error Unsuitable build environment found)
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endif
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LD_GOLD_BANNER := $(shell $(LD) -v 2>&1 | grep 'GNU gold')
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ifneq ($(LD_GOLD_BANNER),)
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$(warning GNU gold is unsuitable for building iPXE)
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$(warning Use GNU ld instead)
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$(error Unsuitable build environment found)
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endif
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OBJCOPY_ETC_BANNER := $(shell $(OBJCOPY) --version | grep 'elftoolchain')
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ifneq ($(OBJCOPY_ETC_BANNER),)
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$(warning The elftoolchain objcopy is unsuitable for building iPXE)
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$(warning Use binutils objcopy instead)
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$(error Unsuitable build environment found)
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endif
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###############################################################################
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###############################################################################
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#
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#
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# Check if $(eval ...) is available to use
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# Check if $(eval ...) is available to use
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@ -130,74 +94,6 @@ endif
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eval :
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eval :
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@$(ECHO) $(HAVE_EVAL)
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@$(ECHO) $(HAVE_EVAL)
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###############################################################################
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#
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# Check for various tool workarounds
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#
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WORKAROUND_CFLAGS :=
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WORKAROUND_ASFLAGS :=
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WORKAROUND_LDFLAGS :=
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# Make syntax does not allow use of comma or space in certain places.
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# This ugly workaround is suggested in the manual.
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#
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COMMA := ,
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EMPTY :=
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SPACE := $(EMPTY) $(EMPTY)
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HASH := \#
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define NEWLINE
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endef
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# gcc 4.4 generates .eh_frame sections by default, which distort the
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# output of "size". Inhibit this.
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#
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ifeq ($(CCTYPE),gcc)
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CFI_TEST = $(CC) -fno-dwarf2-cfi-asm -fno-exceptions -fno-unwind-tables \
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-fno-asynchronous-unwind-tables -x c -c /dev/null \
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-o /dev/null >/dev/null 2>&1
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CFI_FLAGS := $(shell $(CFI_TEST) && \
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$(ECHO) '-fno-dwarf2-cfi-asm -fno-exceptions ' \
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'-fno-unwind-tables -fno-asynchronous-unwind-tables')
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WORKAROUND_CFLAGS += $(CFI_FLAGS)
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endif
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# gcc 4.6 generates spurious warnings if -Waddress is in force.
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# Inhibit this.
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#
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ifeq ($(CCTYPE),gcc)
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WNA_TEST = $(CC) -Waddress -x c -c /dev/null -o /dev/null >/dev/null 2>&1
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WNA_FLAGS := $(shell $(WNA_TEST) && $(ECHO) '-Wno-address')
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WORKAROUND_CFLAGS += $(WNA_FLAGS)
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# gcc 8.0 generates warnings for certain suspect string operations. Our
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# sources have been vetted for correct usage. Turn off these warnings.
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#
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WNST_TEST = $(CC) -Wstringop-truncation -x c -c /dev/null -o /dev/null \
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>/dev/null 2>&1
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WNST_FLAGS := $(shell $(WNST_TEST) && $(ECHO) '-Wno-stringop-truncation')
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WORKAROUND_CFLAGS += $(WNST_FLAGS)
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# gcc 9.1 generates warnings for taking address of packed member which
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# may result in an unaligned pointer value. Inhibit the warnings.
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#
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WNAPM_TEST = $(CC) -Wno-address-of-packed-member -x c -c /dev/null \
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-o /dev/null >/dev/null 2>&1
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WNAPM_FLAGS := $(shell $(WNAPM_TEST) && \
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$(ECHO) '-Wno-address-of-packed-member')
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WORKAROUND_CFLAGS += $(WNAPM_FLAGS)
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endif
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# Some versions of gas choke on division operators, treating them as
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# comment markers. Specifying --divide will work around this problem,
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# but isn't available on older gas versions.
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#
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DIVIDE_TEST = $(AS) --divide /dev/null -o /dev/null 2>/dev/null
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DIVIDE_FLAGS := $(shell $(DIVIDE_TEST) && $(ECHO) '--divide')
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WORKAROUND_ASFLAGS += $(DIVIDE_FLAGS)
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###############################################################################
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###############################################################################
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#
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#
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# Build verbosity
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# Build verbosity
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@ -367,9 +263,124 @@ CFLAGS += -DSECUREBOOT=$(SECUREBOOT)
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secureboot :
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secureboot :
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@$(ECHO) $(SECUREBOOT)
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@$(ECHO) $(SECUREBOOT)
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# Set cross-compilation prefix automatically if not specified
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ifeq ($(CROSS_COMPILE),)
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CROSS_COMPILE := $(CROSS_COMPILE_$(ARCH))
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endif
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endif # defined(BIN)
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endif # defined(BIN)
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###############################################################################
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#
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# Determine compiler
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CCDEFS := $(shell $(CC) -E -x c -c /dev/null -dM | cut -d" " -f2)
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ccdefs:
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@$(ECHO) $(CCDEFS)
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ifeq ($(filter __GNUC__,$(CCDEFS)),__GNUC__)
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CCTYPE := gcc
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endif
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cctype:
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@$(ECHO) $(CCTYPE)
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###############################################################################
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#
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# Check for tools that can cause failed builds
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#
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ifeq ($(CCTYPE),gcc)
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GCC_2_96_BANNER := $(shell $(CC) -v 2>&1 | grep -is 'gcc version 2\.96')
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ifneq ($(GCC_2_96_BANNER),)
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$(warning gcc 2.96 is unsuitable for compiling iPXE)
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$(warning Use gcc 2.95 or a newer version instead)
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$(error Unsuitable build environment found)
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endif
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endif
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PERL_UNICODE_CHECK := $(shell $(PERL) -e 'use bytes; print chr(255)' | wc -c)
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ifeq ($(PERL_UNICODE_CHECK),2)
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$(warning Your Perl version has a Unicode handling bug)
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$(warning Execute this command before building iPXE:)
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$(warning export LANG=$${LANG%.UTF-8})
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$(error Unsuitable build environment found)
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endif
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LD_GOLD_BANNER := $(shell $(LD) -v 2>&1 | grep 'GNU gold')
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ifneq ($(LD_GOLD_BANNER),)
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$(warning GNU gold is unsuitable for building iPXE)
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$(warning Use GNU ld instead)
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$(error Unsuitable build environment found)
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endif
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OBJCOPY_ETC_BANNER := $(shell $(OBJCOPY) --version | grep 'elftoolchain')
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ifneq ($(OBJCOPY_ETC_BANNER),)
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$(warning The elftoolchain objcopy is unsuitable for building iPXE)
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$(warning Use binutils objcopy instead)
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$(error Unsuitable build environment found)
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endif
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###############################################################################
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#
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# Check for various tool workarounds
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#
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WORKAROUND_CFLAGS :=
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WORKAROUND_ASFLAGS :=
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WORKAROUND_LDFLAGS :=
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# gcc 4.4 generates .eh_frame sections by default, which distort the
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# output of "size". Inhibit this.
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#
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ifeq ($(CCTYPE),gcc)
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CFI_TEST = $(CC) -fno-dwarf2-cfi-asm -fno-exceptions -fno-unwind-tables \
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-fno-asynchronous-unwind-tables -x c -c /dev/null \
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-o /dev/null >/dev/null 2>&1
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CFI_FLAGS := $(shell $(CFI_TEST) && \
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$(ECHO) '-fno-dwarf2-cfi-asm -fno-exceptions ' \
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'-fno-unwind-tables -fno-asynchronous-unwind-tables')
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WORKAROUND_CFLAGS += $(CFI_FLAGS)
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endif
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# gcc 4.6 generates spurious warnings if -Waddress is in force.
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# Inhibit this.
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#
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ifeq ($(CCTYPE),gcc)
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WNA_TEST = $(CC) -Waddress -x c -c /dev/null -o /dev/null >/dev/null 2>&1
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WNA_FLAGS := $(shell $(WNA_TEST) && $(ECHO) '-Wno-address')
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WORKAROUND_CFLAGS += $(WNA_FLAGS)
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# gcc 8.0 generates warnings for certain suspect string operations. Our
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# sources have been vetted for correct usage. Turn off these warnings.
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#
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WNST_TEST = $(CC) -Wstringop-truncation -x c -c /dev/null -o /dev/null \
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>/dev/null 2>&1
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WNST_FLAGS := $(shell $(WNST_TEST) && $(ECHO) '-Wno-stringop-truncation')
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WORKAROUND_CFLAGS += $(WNST_FLAGS)
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# gcc 9.1 generates warnings for taking address of packed member which
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# may result in an unaligned pointer value. Inhibit the warnings.
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#
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WNAPM_TEST = $(CC) -Wno-address-of-packed-member -x c -c /dev/null \
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-o /dev/null >/dev/null 2>&1
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WNAPM_FLAGS := $(shell $(WNAPM_TEST) && \
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$(ECHO) '-Wno-address-of-packed-member')
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WORKAROUND_CFLAGS += $(WNAPM_FLAGS)
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endif
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# Some versions of gas choke on division operators, treating them as
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# comment markers. Specifying --divide will work around this problem,
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# but isn't available on older gas versions.
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#
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DIVIDE_TEST = $(AS) --divide /dev/null -o /dev/null 2>/dev/null
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DIVIDE_FLAGS := $(shell $(DIVIDE_TEST) && $(ECHO) '--divide')
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WORKAROUND_ASFLAGS += $(DIVIDE_FLAGS)
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###############################################################################
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#
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# Include architecture-specific Makefile
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# Include architecture-specific Makefile
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#
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ifdef ARCH
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ifdef ARCH
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MAKEDEPS += arch/$(ARCH)/Makefile
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MAKEDEPS += arch/$(ARCH)/Makefile
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include arch/$(ARCH)/Makefile
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include arch/$(ARCH)/Makefile
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Loading…
Reference in New Issue