| SConstruct (12061:0225580779db) | SConstruct (12063:06cd2c297b04) |
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| 1# -*- mode:python -*- 2 3# Copyright (c) 2013, 2015, 2016 ARM Limited 4# All rights reserved. 5# 6# The license below extends only to copyright in the software and shall 7# not be construed as granting a license to any other intellectual 8# property including but not limited to intellectual property relating --- 169 unchanged lines hidden (view full) --- 178 action='store_true', 179 help="Build with support for C++-based configuration") 180AddLocalOption('--default', dest='default', type='string', action='store', 181 help='Override which build_opts file to use for defaults') 182AddLocalOption('--ignore-style', dest='ignore_style', action='store_true', 183 help='Disable style checking hooks') 184AddLocalOption('--no-lto', dest='no_lto', action='store_true', 185 help='Disable Link-Time Optimization for fast') | 1# -*- mode:python -*- 2 3# Copyright (c) 2013, 2015, 2016 ARM Limited 4# All rights reserved. 5# 6# The license below extends only to copyright in the software and shall 7# not be construed as granting a license to any other intellectual 8# property including but not limited to intellectual property relating --- 169 unchanged lines hidden (view full) --- 178 action='store_true', 179 help="Build with support for C++-based configuration") 180AddLocalOption('--default', dest='default', type='string', action='store', 181 help='Override which build_opts file to use for defaults') 182AddLocalOption('--ignore-style', dest='ignore_style', action='store_true', 183 help='Disable style checking hooks') 184AddLocalOption('--no-lto', dest='no_lto', action='store_true', 185 help='Disable Link-Time Optimization for fast') |
| 186AddLocalOption('--force-lto', dest='force_lto', action='store_true', 187 help='Use Link-Time Optimization instead of partial linking' + 188 ' when the compiler doesn\'t support using them together.') |
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| 186AddLocalOption('--update-ref', dest='update_ref', action='store_true', 187 help='Update test reference outputs') 188AddLocalOption('--verbose', dest='verbose', action='store_true', 189 help='Print full tool command lines') 190AddLocalOption('--without-python', dest='without_python', 191 action='store_true', 192 help='Build without Python configuration support') 193AddLocalOption('--without-tcmalloc', dest='without_tcmalloc', 194 action='store_true', 195 help='Disable linking against tcmalloc') 196AddLocalOption('--with-ubsan', dest='with_ubsan', action='store_true', 197 help='Build with Undefined Behavior Sanitizer if available') 198AddLocalOption('--with-asan', dest='with_asan', action='store_true', 199 help='Build with Address Sanitizer if available') 200 | 189AddLocalOption('--update-ref', dest='update_ref', action='store_true', 190 help='Update test reference outputs') 191AddLocalOption('--verbose', dest='verbose', action='store_true', 192 help='Print full tool command lines') 193AddLocalOption('--without-python', dest='without_python', 194 action='store_true', 195 help='Build without Python configuration support') 196AddLocalOption('--without-tcmalloc', dest='without_tcmalloc', 197 action='store_true', 198 help='Disable linking against tcmalloc') 199AddLocalOption('--with-ubsan', dest='with_ubsan', action='store_true', 200 help='Build with Undefined Behavior Sanitizer if available') 201AddLocalOption('--with-asan', dest='with_asan', action='store_true', 202 help='Build with Address Sanitizer if available') 203 |
| 204if GetOption('no_lto') and GetOption('force_lto'): 205 print '--no-lto and --force-lto are mutually exclusive' 206 Exit(1) 207 |
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| 201termcap = get_termcap(GetOption('use_colors')) 202 203######################################################################## 204# 205# Set up the main build environment. 206# 207######################################################################## 208 --- 505 unchanged lines hidden (view full) --- 714 gcc_version = readCommand([main['CXX'], '-dumpversion'], exception=False) 715 if compareVersions(gcc_version, "4.8") < 0: 716 print 'Error: gcc version 4.8 or newer required.' 717 print ' Installed version:', gcc_version 718 Exit(1) 719 720 main['GCC_VERSION'] = gcc_version 721 | 208termcap = get_termcap(GetOption('use_colors')) 209 210######################################################################## 211# 212# Set up the main build environment. 213# 214######################################################################## 215 --- 505 unchanged lines hidden (view full) --- 721 gcc_version = readCommand([main['CXX'], '-dumpversion'], exception=False) 722 if compareVersions(gcc_version, "4.8") < 0: 723 print 'Error: gcc version 4.8 or newer required.' 724 print ' Installed version:', gcc_version 725 Exit(1) 726 727 main['GCC_VERSION'] = gcc_version 728 |
| 729 if compareVersions(gcc_version, '4.9') >= 0: 730 # Incremental linking with LTO is currently broken in gcc versions 731 # 4.9 and above. A version where everything works completely hasn't 732 # yet been identified. 733 # 734 # https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67548 735 main['BROKEN_INCREMENTAL_LTO'] = True 736 if compareVersions(gcc_version, '6.0') >= 0: 737 # gcc versions 6.0 and greater accept an -flinker-output flag which 738 # selects what type of output the linker should generate. This is 739 # necessary for incremental lto to work, but is also broken in 740 # current versions of gcc. It may not be necessary in future 741 # versions. We add it here since it might be, and as a reminder that 742 # it exists. It's excluded if lto is being forced. 743 # 744 # https://gcc.gnu.org/gcc-6/changes.html 745 # https://gcc.gnu.org/ml/gcc-patches/2015-11/msg03161.html 746 # https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69866 747 if not GetOption('force_lto'): 748 main.Append(PSHLINKFLAGS='-flinker-output=rel') 749 main.Append(PLINKFLAGS='-flinker-output=rel') 750 |
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| 722 # gcc from version 4.8 and above generates "rep; ret" instructions 723 # to avoid performance penalties on certain AMD chips. Older 724 # assemblers detect this as an error, "Error: expecting string 725 # instruction after `rep'" 726 as_version_raw = readCommand([main['AS'], '-v', '/dev/null', 727 '-o', '/dev/null'], 728 exception=False).split() 729 --- 14 unchanged lines hidden (view full) --- 744 # Undefined Benahvior Sanitizer and this version of gcc does not 745 # support it. 746 if GetOption('with_ubsan') and \ 747 compareVersions(gcc_version, '4.9') < 0: 748 print termcap.Yellow + termcap.Bold + \ 749 'Warning: UBSan is only supported using gcc 4.9 and later.' + \ 750 termcap.Normal 751 | 751 # gcc from version 4.8 and above generates "rep; ret" instructions 752 # to avoid performance penalties on certain AMD chips. Older 753 # assemblers detect this as an error, "Error: expecting string 754 # instruction after `rep'" 755 as_version_raw = readCommand([main['AS'], '-v', '/dev/null', 756 '-o', '/dev/null'], 757 exception=False).split() 758 --- 14 unchanged lines hidden (view full) --- 773 # Undefined Benahvior Sanitizer and this version of gcc does not 774 # support it. 775 if GetOption('with_ubsan') and \ 776 compareVersions(gcc_version, '4.9') < 0: 777 print termcap.Yellow + termcap.Bold + \ 778 'Warning: UBSan is only supported using gcc 4.9 and later.' + \ 779 termcap.Normal 780 |
| 781 disable_lto = GetOption('no_lto') 782 if not disable_lto and main.get('BROKEN_INCREMENTAL_LTO', False) and \ 783 not GetOption('force_lto'): 784 print termcap.Yellow + termcap.Bold + \ 785 'Warning: Your compiler doesn\'t support incremental linking' + \ 786 ' and lto at the same time, so lto is being disabled. To force' + \ 787 ' lto on anyway, use the --force-lto option. That will disable' + \ 788 ' partial linking.' + \ 789 termcap.Normal 790 disable_lto = True 791 |
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| 752 # Add the appropriate Link-Time Optimization (LTO) flags 753 # unless LTO is explicitly turned off. Note that these flags 754 # are only used by the fast target. | 792 # Add the appropriate Link-Time Optimization (LTO) flags 793 # unless LTO is explicitly turned off. Note that these flags 794 # are only used by the fast target. |
| 755 if not GetOption('no_lto'): | 795 if not disable_lto: |
| 756 # Pass the LTO flag when compiling to produce GIMPLE 757 # output, we merely create the flags here and only append 758 # them later 759 main['LTO_CCFLAGS'] = ['-flto=%d' % GetOption('num_jobs')] 760 761 # Use the same amount of jobs for LTO as we are running 762 # scons with 763 main['LTO_LDFLAGS'] = ['-flto=%d' % GetOption('num_jobs')] --- 782 unchanged lines hidden --- | 796 # Pass the LTO flag when compiling to produce GIMPLE 797 # output, we merely create the flags here and only append 798 # them later 799 main['LTO_CCFLAGS'] = ['-flto=%d' % GetOption('num_jobs')] 800 801 # Use the same amount of jobs for LTO as we are running 802 # scons with 803 main['LTO_LDFLAGS'] = ['-flto=%d' % GetOption('num_jobs')] --- 782 unchanged lines hidden --- |