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Description: use generic compiler flags for GSL tests
The Python module "brian" is capable of compiling code in some of its
subsystems. For performance purpose, the project defaults to aggressive
compilation options. This works relatively well on amd64. However, compiler
options are not consistent on all platforms. Architectures based on IBM POWER
use -mcpu=native and -mtune=native insteas of -march, and other architecture
such as PA-RISC, RISC-V or Motorola 68000 have no "native" support of any sort.
.
This patch adapts the compiler options depending on the machine reported by
uname.
Author: Étienne Mollier <etienne.mollier@mailoo.org>
Forwarded: https://github.com/brian-team/brian2/pull/1277
Last-Update: 2021-02-20
---
This patch header follows DEP-3: http://dep.debian.net/deps/dep3/
--- a/brian2/codegen/cpp_prefs.py
+++ b/brian2/codegen/cpp_prefs.py
@@ -120,6 +120,22 @@ if sys.platform == 'win32':
else:
prefix_dir = sys_prefix
+# Optimized default build options for a range a CPU architectures
+machine = os.uname().machine
+if re.match('^(x86_64|x32|aarch64|arm.*|s390.*|i.86.*)$', machine):
+ default_buildopts = ['-w', '-O3', '-ffast-math', '-fno-finite-math-only',
+ '-march=native', '-std=c++11']
+elif re.match('^(alpha|ppc.*|sparc.*)$', machine):
+ default_buildopts = ['-w', '-O3', '-ffast-math', '-fno-finite-math-only',
+ '-mcpu=native', '-mtune=native', '-std=c++11']
+elif re.match('^(sh|m68k|ia64|parisc.*|riscv.*|mips.*)$', machine):
+ default_buildopts = ['-w', '-O3', '-ffast-math', '-fno-finite-math-only',
+ '-std=c++11']
+else:
+ print("warning: unknown machine, using safe default build options for",
+ machine, file=sys.stderr)
+ default_buildopts = ['-w']
+
# Preferences
prefs.register_preferences(
'codegen.cpp',
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