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Add a way to apply CFLAGS only when building the given architecture. This

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is useful primarily on a system used for cross-building, when you have a
set of flags to apply to the TARGET_ARCH being cross-built but don't want
those settings applied to building the cross-tools or other components that
run on the build host machine.
This commit is contained in:
Ian Lepore 2014-03-19 18:54:53 +00:00
parent 1afb8884a7
commit 44653522f6
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=263373
2 changed files with 11 additions and 0 deletions
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7
share/examples/etc/make.conf
View File

@ -60,6 +60,12 @@
# nonstandard optimization settings
# before submitting bug reports without patches to the developers.
#
# CFLAGS.arch provides a mechanism for applying CFLAGS only when building
# the given architecture. This is useful primarily on a system used for
# cross-building, when you have a set of flags to apply to the TARGET_ARCH
# being cross-built but don't want those settings applied to building the
# cross-tools or other components that run on the build host machine.
#
# CXXFLAGS controls the compiler settings used when compiling C++ code.
# Note that CXXFLAGS is initially set to the value of CFLAGS. If you wish
# to add to CXXFLAGS value, "+=" must be used rather than "=". Using "="
@ -71,6 +77,7 @@
#
# CFLAGS+= -msse3
# CXXFLAGS+= -msse3
# CFLAGS.armv6+= -mfloat-abi=softfp
#
# MAKE_SHELL controls the shell used internally by make(1) to process the
# command scripts in makefiles. Three shells are supported, sh, ksh, and

4
share/mk/bsd.cpu.mk
View File

@ -260,3 +260,7 @@ CFLAGS += -G0
.if !defined(NO_CPU_CFLAGS)
CFLAGS += ${_CPUCFLAGS}
.endif
# Add in any architecture-specific CFLAGS.
# These come from make.conf or the command line or the environment.
CFLAGS += ${CFLAGS.${MACHINE_ARCH}}