| @@ -436,6 +436,14 @@ def library_recipes(): |
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436 |
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return result |
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+def compilerCanOptimize(): |
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+""" |
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+ Return True iff the default Xcode version can use PGO and LTO |
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+ """ |
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+# bpo-42235: The version check is pretty conservative, can be |
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+# adjusted after testing |
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+mac_ver = tuple(map(int, platform.mac_ver()[0].split('.'))) |
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+return mac_ver >= (10, 15) |
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447 |
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# Instructions for building packages inside the .mpkg. |
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def pkg_recipes(): |
| @@ -1176,6 +1184,7 @@ def buildPython(): |
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1184 |
"%s " |
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"%s " |
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"%s " |
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+"%s " |
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"LDFLAGS='-g -L%s/libraries/usr/local/lib' " |
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"CFLAGS='-g -I%s/libraries/usr/local/include' 2>&1"%( |
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shellQuote(os.path.join(SRCDIR, 'configure')), |
| @@ -1188,6 +1197,7 @@ def buildPython(): |
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shellQuote(WORKDIR)[1:-1],))[internalTk()], |
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(' ', "--with-tcltk-libs='-L%s/libraries/usr/local/lib -ltcl8.6 -ltk8.6'"%( |
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shellQuote(WORKDIR)[1:-1],))[internalTk()], |
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+ (' ', "--enable-optimizations --with-lto")[compilerCanOptimize()], |
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shellQuote(WORKDIR)[1:-1], |
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shellQuote(WORKDIR)[1:-1])) |
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1203 |
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