scons: Move the build of ext/ into the variant dirs.
These are no longer split out and shared in the root build/ directory.
This does result in a small amount of overhead from building redundant
copies of these files, although the overhead is not significant. When
building 7 different variants of gem5, all the ISAs and NULL, the
difference on my machine was:
Before:
real 41m25.372s
user 914m22.266s
sys 41m51.816s
After:
real 42m38.074s
user 921m36.852s
sys 43m2.949s
This is about a 2-3% difference, which is a worse than typical case,
since the overhead scales with the number of variants being built.
The benefit of pulling ext/ into the variant directory is that there can
now be a single config which applies to all files used to build gem5,
and that config is represented by the variant of gem5 being built.
Change-Id: I6f0db97c63a7f3e252e7e351aa862340978e701b
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/56750
Maintainer: Gabe Black <gabe.black@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Gabe Black <gabe.black@gmail.com>
diff --git a/ext/drampower/SConscript b/ext/drampower/SConscript
index 0518197..870d050 100644
--- a/ext/drampower/SConscript
+++ b/ext/drampower/SConscript
@@ -39,9 +39,9 @@
import os
-Import('main')
+Import('env')
-main.Prepend(CPPPATH=Dir('./src'))
+env.Prepend(CPPPATH=Dir('./src'))
# Add the appropriate files for the library
drampower_files = []
@@ -63,7 +63,7 @@
DRAMPowerFile('CmdHandlers.cc')
DRAMPowerFile('MemBankWiseParams.cc')
-main.Library('drampower', [main.SharedObject(f) for f in drampower_files])
+env.Library('drampower', [env.SharedObject(f) for f in drampower_files])
-main.Append(LIBS=['drampower'])
-main.Prepend(LIBPATH=[Dir('.')])
+env.Append(LIBS=['drampower'])
+env.Prepend(LIBPATH=[Dir('.')])
diff --git a/ext/dramsim2/SConscript b/ext/dramsim2/SConscript
index b4355fa..95b999d 100644
--- a/ext/dramsim2/SConscript
+++ b/ext/dramsim2/SConscript
@@ -38,16 +38,16 @@
import os
-Import('main')
+Import('env')
# See if we got a cloned DRAMSim2 repo as a subdirectory and set the
# HAVE_DRAMSIM flag accordingly
if not os.path.exists(Dir('.').srcnode().abspath + '/DRAMSim2'):
- main['HAVE_DRAMSIM'] = False
+ env['HAVE_DRAMSIM'] = False
Return()
# We have got the folder, so add the library and build the wrappers
-main['HAVE_DRAMSIM'] = True
+env['HAVE_DRAMSIM'] = True
# Add the appropriate files. We leave out the trace driven simulator
dram_files = []
@@ -59,7 +59,7 @@
DRAMFile('Bank.cpp')
DRAMFile('BankState.cpp')
DRAMFile('BusPacket.cpp')
-DRAMFile('ClockDomain.cpp')
+DRAMFile('ClockDoenv.cpp')
DRAMFile('CommandQueue.cpp')
DRAMFile('IniReader.cpp')
DRAMFile('MemoryController.cpp')
@@ -71,11 +71,11 @@
# DRAMSim2 violates some of the warning flags used by gem5, so
# we explicitly disable them here
-dramenv = main.Clone()
+dramenv = env.Clone()
dramenv.Append(CCFLAGS=['-Wno-unused-value', '-Wno-error=nonnull-compare'])
# If we are using clang, there are more flags to disable
-if main['CLANG']:
+if env['CLANG']:
dramenv.Append(CCFLAGS=['-Wno-unused-private-field',
'-Wno-tautological-undefined-compare'])
@@ -85,6 +85,6 @@
dramenv.Library('dramsim2', [dramenv.SharedObject(f) for f in dram_files])
-main.Prepend(CPPPATH=Dir('.'))
-main.Append(LIBS=['dramsim2'])
-main.Prepend(LIBPATH=[Dir('.')])
+env.Prepend(CPPPATH=Dir('.'))
+env.Append(LIBS=['dramsim2'])
+env.Prepend(LIBPATH=[Dir('.')])
diff --git a/ext/dramsim3/SConscript b/ext/dramsim3/SConscript
index 9e5a3a1..b717816 100644
--- a/ext/dramsim3/SConscript
+++ b/ext/dramsim3/SConscript
@@ -38,32 +38,32 @@
import os
-Import('main')
+Import('env')
thermal = False
# See if we got a cloned DRAMSim3 repo as a subdirectory and set the
# HAVE_DRAMSIM flag accordingly
if not os.path.exists(Dir('.').srcnode().abspath + '/DRAMsim3'):
- main['HAVE_DRAMSIM3'] = False
+ env['HAVE_DRAMSIM3'] = False
Return()
# We have got the folder, so add the library and build the wrappers
-main['HAVE_DRAMSIM3'] = True
+env['HAVE_DRAMSIM3'] = True
dramsim_path = os.path.join(Dir('#').abspath, 'ext/dramsim3/DRAMsim3/')
if thermal:
superlu_path = os.path.join(dramsim_path, 'ext/SuperLU_MT_3.1/lib')
- main.Prepend(CPPPATH=Dir('.'))
- main.Append(LIBS=['dramsim3', 'superlu_mt_OPENMP', 'm', 'f77blas',
+ env.Prepend(CPPPATH=Dir('.'))
+ env.Append(LIBS=['dramsim3', 'superlu_mt_OPENMP', 'm', 'f77blas',
'atlas', 'gomp'],
LIBPATH=[dramsim_path, superlu_path])
else:
- main.Prepend(CPPPATH=Dir('.'))
+ env.Prepend(CPPPATH=Dir('.'))
# a littel hacky but can get a shared library working
- main.Append(LIBS=['dramsim3', 'gomp'],
+ env.Append(LIBS=['dramsim3', 'gomp'],
LIBPATH=[dramsim_path], # compile-time lookup
RPATH=[dramsim_path], # runtime lookup
CPPPATH=[dramsim_path+'/src/'])
diff --git a/ext/fputils/SConscript b/ext/fputils/SConscript
index 6d3f1ff..6a8e44f 100644
--- a/ext/fputils/SConscript
+++ b/ext/fputils/SConscript
@@ -28,11 +28,11 @@
#
# Authors: Andreas Sandberg
-Import('main')
+Import('env')
-main.Prepend(CPPPATH=Dir('./include'))
+env.Prepend(CPPPATH=Dir('./include'))
-fpenv = main.Clone()
+fpenv = env.Clone()
# By default gcc uses c89 and clang uses c99. For fputils to compile
# we need to use c99.
@@ -44,6 +44,6 @@
fpenv.SharedObject('fp80.c'),
])
-main.Append(LIBS=['fputils'])
-main.Prepend(LIBPATH=[Dir('.')])
+env.Append(LIBS=['fputils'])
+env.Prepend(LIBPATH=[Dir('.')])
diff --git a/ext/googletest/SConscript b/ext/googletest/SConscript
index 5a4b691..21830f0 100644
--- a/ext/googletest/SConscript
+++ b/ext/googletest/SConscript
@@ -26,7 +26,7 @@
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-Import('main')
+Import('env')
# The root of the build directory.
build = Dir('.')
@@ -40,18 +40,18 @@
gtest_src = Dir('googletest/src')
gmock_src = Dir('googlemock/src')
-main.Append(CPPPATH=[gtest_include, gmock_include])
-main.Append(LIBPATH=[build])
+env.Append(CPPPATH=[gtest_include, gmock_include])
+env.Append(LIBPATH=[build])
-env = main.Clone(CCFLAGS=['-g', '-pthread', '-Wno-undef', '-isystem',
+genv = env.Clone(CCFLAGS=['-g', '-pthread', '-Wno-undef', '-isystem',
str(gtest_include), '-isystem', str(gmock_include)])
-env.Append(CPPPATH=[gtest_base, gmock_base])
+genv.Append(CPPPATH=[gtest_base, gmock_base])
-gtest_all = env.Object(gtest_src.File('gtest-all.cc'))
-gmock_all = env.Object(gmock_src.File('gmock-all.cc'))
-gtest_main = env.StaticLibrary(target='libgtest', source=[
+gtest_all = genv.Object(gtest_src.File('gtest-all.cc'))
+gmock_all = genv.Object(gmock_src.File('gmock-all.cc'))
+gtest_main = genv.StaticLibrary(target='libgtest', source=[
gtest_all, gmock_all, gtest_src.File('gtest_main.cc')])
-main['GTEST_LIBS'] = ['libgtest', 'pthread']
-main['GTEST_CPPFLAGS'] = [
+env['GTEST_LIBS'] = ['libgtest', 'pthread']
+env['GTEST_CPPFLAGS'] = [
'-pthread', '-DUSE_GMOCK', '-Wno-undef', '-isystem', gtest_include.abspath]
diff --git a/ext/iostream3/SConscript b/ext/iostream3/SConscript
index f8b5461..df0b213 100644
--- a/ext/iostream3/SConscript
+++ b/ext/iostream3/SConscript
@@ -37,10 +37,10 @@
#
# Authors: Andreas Hansson
-Import('main')
+Import('env')
-main.Library('iostream3', [main.SharedObject('zfstream.cc')])
+env.Library('iostream3', [env.SharedObject('zfstream.cc')])
-main.Prepend(CPPPATH=Dir('.'))
-main.Append(LIBS=['iostream3'])
-main.Prepend(LIBPATH=[Dir('.')])
+env.Prepend(CPPPATH=Dir('.'))
+env.Append(LIBS=['iostream3'])
+env.Prepend(LIBPATH=[Dir('.')])
diff --git a/ext/libelf/SConscript b/ext/libelf/SConscript
index ccc1f64..535e216 100644
--- a/ext/libelf/SConscript
+++ b/ext/libelf/SConscript
@@ -30,7 +30,7 @@
import os, subprocess
-Import('main')
+Import('env')
elf_files = []
def ElfFile(filename):
@@ -97,7 +97,7 @@
ElfFile('libelf_fsize.c')
ElfFile('libelf_msize.c')
-m4env = main.Clone()
+m4env = env.Clone()
if m4env['GCC']:
m4env.Append(CCFLAGS=['-Wno-pointer-sign',
'-Wno-unused-but-set-variable',
@@ -146,6 +146,6 @@
m4env.Command(File('native-elf-format.h'), File('native-elf-format'),
'${SOURCE} > ${TARGET}')
-main.Prepend(CPPPATH=Dir('.'))
-main.Append(LIBS=[File('libelf.a')])
-main.Prepend(LIBPATH=[Dir('.')])
+env.Prepend(CPPPATH=Dir('.'))
+env.Append(LIBS=[File('libelf.a')])
+env.Prepend(LIBPATH=[Dir('.')])
diff --git a/ext/libfdt/SConscript b/ext/libfdt/SConscript
index fb44115..64573b7 100644
--- a/ext/libfdt/SConscript
+++ b/ext/libfdt/SConscript
@@ -28,7 +28,7 @@
#
# Authors: Anthony Gutierrez
-Import('main')
+Import('env')
fdt_files = []
@@ -43,7 +43,7 @@
FdtFile('fdt_empty_tree.c')
FdtFile('fdt_strerror.c')
-main.Library('fdt', [main.SharedObject(f) for f in fdt_files])
-main.Prepend(CPPPATH=Dir('.'))
-main.Append(LIBS=['fdt'])
-main.Prepend(LIBPATH=[Dir('.')])
+env.Library('fdt', [env.SharedObject(f) for f in fdt_files])
+env.Prepend(CPPPATH=Dir('.'))
+env.Append(LIBS=['fdt'])
+env.Prepend(LIBPATH=[Dir('.')])
diff --git a/ext/nomali/SConscript b/ext/nomali/SConscript
index 2810f6d..b156ab0 100644
--- a/ext/nomali/SConscript
+++ b/ext/nomali/SConscript
@@ -37,11 +37,11 @@
#
# Authors: Andreas Sandberg
-Import('main')
+Import('env')
-main.Prepend(CPPPATH=Dir('./include'))
+env.Prepend(CPPPATH=Dir('./include'))
-nomali = main.Clone()
+nomali = env.Clone()
nomali.Append(CCFLAGS=['-Wno-ignored-qualifiers'])
nomali_sources = [
@@ -60,6 +60,6 @@
nomali.Library('nomali', [ nomali.SharedObject(f) for f in nomali_sources ])
-main.Append(LIBS=['nomali'])
-main.Prepend(LIBPATH=[Dir('.')])
+env.Append(LIBS=['nomali'])
+env.Prepend(LIBPATH=[Dir('.')])
diff --git a/ext/softfloat/SConscript b/ext/softfloat/SConscript
index f08a022..bfa2b285 100644
--- a/ext/softfloat/SConscript
+++ b/ext/softfloat/SConscript
@@ -31,19 +31,19 @@
import os
-Import('main')
+Import('env')
-env = main.Clone()
-if env['GCC']:
- env.Append(CCFLAGS=['-Wno-unused-variable',
- '-Wno-unused-label',
- '-Wno-implicit-fallthrough',
- '-g'])
+sf_env = env.Clone()
+if sf_env['GCC']:
+ sf_env.Append(CCFLAGS=['-Wno-unused-variable',
+ '-Wno-unused-label',
+ '-Wno-implicit-fallthrough',
+ '-g'])
-elif env['CLANG']:
- env.Append(CCFLAGS=['-Wno-unused-variable',
- '-Wno-unused-label',
- '-g'])
+elif sf_env['CLANG']:
+ sf_env.Append(CCFLAGS=['-Wno-unused-variable',
+ '-Wno-unused-label',
+ '-g'])
# Add the appropriate files for the library
softfloat_files = []
@@ -271,8 +271,8 @@
SoftfloatFile('ui64_to_f32.c')
SoftfloatFile('ui64_to_f64.c')
-env.Library('softfloat', [env.SharedObject(f) for f in softfloat_files])
+sf_env.Library('softfloat', [sf_env.SharedObject(f) for f in softfloat_files])
-main.Prepend(CPPPATH=Dir('./'))
-main.Append(LIBS=['softfloat'])
-main.Prepend(LIBPATH=[Dir('.')])
+env.Prepend(CPPPATH=Dir('./'))
+env.Append(LIBS=['softfloat'])
+env.Prepend(LIBPATH=[Dir('.')])
diff --git a/ext/systemc/SConscript b/ext/systemc/SConscript
index d0cb6f8..89ef920 100644
--- a/ext/systemc/SConscript
+++ b/ext/systemc/SConscript
@@ -26,8 +26,8 @@
import os
from m5.util.terminal import get_termcap
-Import('main')
-systemc = main.Clone()
+Import('env')
+systemc = env.Clone()
build_root = Dir('.').abspath
src_root = Dir('.').srcdir.abspath
