mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-19 10:53:58 +00:00
187278cadc
Makefiles or *.mk files, use ${CC:T:Mfoo} instead, so only the basename
of the compiler command (excluding any arguments) is considered.
This allows you to use, for example, CC="/nondefault/path/clang -xxx",
and still have the various tests in bsd.*.mk identify your compiler as
clang correctly.
ICC if cases were also changed.
Submitted by: Dimitry Andric <dimitry at andric.com>
121 lines
3.5 KiB
Makefile
121 lines
3.5 KiB
Makefile
# $FreeBSD$
|
|
|
|
#
|
|
# Warning flags for compiling the kernel and components of the kernel.
|
|
#
|
|
# Note that the newly added -Wcast-qual is responsible for generating
|
|
# most of the remaining warnings. Warnings introduced with -Wall will
|
|
# also pop up, but are easier to fix.
|
|
.if ${CC:T:Micc} == "icc"
|
|
#CWARNFLAGS= -w2 # use this if you are terribly bored
|
|
CWARNFLAGS=
|
|
.else
|
|
CWARNFLAGS?= -Wall -Wredundant-decls -Wnested-externs -Wstrict-prototypes \
|
|
-Wmissing-prototypes -Wpointer-arith -Winline -Wcast-qual \
|
|
-Wundef -Wno-pointer-sign -fformat-extensions
|
|
.endif
|
|
#
|
|
# The following flags are next up for working on:
|
|
# -W
|
|
|
|
#
|
|
# On the i386, do not align the stack to 16-byte boundaries. Otherwise GCC
|
|
# 2.95 adds code to the entry and exit point of every function to align the
|
|
# stack to 16-byte boundaries -- thus wasting approximately 12 bytes of stack
|
|
# per function call. While the 16-byte alignment may benefit micro benchmarks,
|
|
# it is probably an overall loss as it makes the code bigger (less efficient
|
|
# use of code cache tag lines) and uses more stack (less efficient use of data
|
|
# cache tag lines). Explicitly prohibit the use of SSE and other SIMD
|
|
# operations inside the kernel itself. These operations are exclusively
|
|
# reserved for user applications.
|
|
#
|
|
.if ${MACHINE_ARCH} == "i386" && ${CC:T:Micc} != "icc"
|
|
.if ${CC:T:Mclang} != "clang"
|
|
CFLAGS+= -mno-align-long-strings -mpreferred-stack-boundary=2
|
|
.endif
|
|
CFLAGS+= -mno-mmx -mno-3dnow -mno-sse -mno-sse2 -mno-sse3
|
|
INLINE_LIMIT?= 8000
|
|
.endif
|
|
|
|
.if ${MACHINE_ARCH} == "arm"
|
|
INLINE_LIMIT?= 8000
|
|
.endif
|
|
#
|
|
# For IA-64, we use r13 for the kernel globals pointer and we only use
|
|
# a very small subset of float registers for integer divides.
|
|
#
|
|
.if ${MACHINE_ARCH} == "ia64"
|
|
CFLAGS+= -ffixed-r13 -mfixed-range=f32-f127 -fpic #-mno-sdata
|
|
INLINE_LIMIT?= 15000
|
|
.endif
|
|
|
|
#
|
|
# For sparc64 we want medlow code model, and we tell gcc to use floating
|
|
# point emulation. This avoids using floating point registers for integer
|
|
# operations which it has a tendency to do.
|
|
#
|
|
.if ${MACHINE_ARCH} == "sparc64"
|
|
CFLAGS+= -mcmodel=medany -msoft-float
|
|
INLINE_LIMIT?= 15000
|
|
.endif
|
|
|
|
#
|
|
# For AMD64, we explicitly prohibit the use of FPU, SSE and other SIMD
|
|
# operations inside the kernel itself. These operations are exclusively
|
|
# reserved for user applications.
|
|
#
|
|
.if ${MACHINE_ARCH} == "amd64"
|
|
CFLAGS+= -mcmodel=kernel -mno-red-zone \
|
|
-mfpmath=387 -mno-sse -mno-sse2 -mno-sse3 -mno-mmx -mno-3dnow \
|
|
-msoft-float -fno-asynchronous-unwind-tables
|
|
INLINE_LIMIT?= 8000
|
|
.endif
|
|
|
|
#
|
|
# For PowerPC we tell gcc to use floating point emulation. This avoids using
|
|
# floating point registers for integer operations which it has a tendency to do.
|
|
# Also explicitly disable Altivec instructions inside the kernel.
|
|
#
|
|
.if ${MACHINE_ARCH} == "powerpc" || ${MACHINE_ARCH} == "powerpc64"
|
|
CFLAGS+= -msoft-float -mno-altivec
|
|
INLINE_LIMIT?= 15000
|
|
.endif
|
|
|
|
#
|
|
# For MIPS we also tell gcc to use floating point emulation
|
|
#
|
|
.if ${MACHINE_ARCH} == "mips"
|
|
CFLAGS+= -msoft-float
|
|
INLINE_LIMIT?= 8000
|
|
.endif
|
|
|
|
#
|
|
# GCC 3.0 and above like to do certain optimizations based on the
|
|
# assumption that the program is linked against libc. Stop this.
|
|
#
|
|
.if ${CC:T:Micc} == "icc"
|
|
CFLAGS+= -nolib_inline
|
|
.else
|
|
CFLAGS+= -ffreestanding
|
|
.endif
|
|
|
|
.if ${CC:T:Micc} == "icc"
|
|
CFLAGS+= -restrict
|
|
.endif
|
|
|
|
#
|
|
# GCC SSP support.
|
|
#
|
|
.if ${MK_SSP} != "no" && ${CC:T:Micc} != "icc" && ${MACHINE_ARCH} != "ia64" && \
|
|
${MACHINE_ARCH} != "arm" && ${MACHINE_ARCH} != "mips"
|
|
CFLAGS+= -fstack-protector
|
|
.endif
|
|
|
|
#
|
|
# Enable CTF conversation on request.
|
|
#
|
|
.if defined(WITH_CTF)
|
|
.undef NO_CTF
|
|
.endif
|
|
|