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1bb327e7c9
Most patches contained two spurious first lines. Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
27 lines
1.3 KiB
Diff
27 lines
1.3 KiB
Diff
diff -durN gcc-4.4.4.orig/gcc/doc/invoke.texi gcc-4.4.4/gcc/doc/invoke.texi
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--- gcc-4.4.4.orig/gcc/doc/invoke.texi 2010-05-16 19:11:21.000000000 +0200
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+++ gcc-4.4.4/gcc/doc/invoke.texi 2010-05-16 19:11:30.000000000 +0200
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@@ -5432,6 +5432,11 @@
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Please note the warning under @option{-fgcse} about
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invoking @option{-O2} on programs that use computed gotos.
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+NOTE: In Gentoo, @option{-D_FORTIFY_SOURCE=2} is set by default, and is
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+activated when @option{-O} is set to 2 or higher. This enables additional
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+compile-time and run-time checks for several libc functions. To disable,
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+specify either @option{-U_FORTIFY_SOURCE} or @option{-D_FORTIFY_SOURCE=0}.
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+
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@item -O3
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@opindex O3
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Optimize yet more. @option{-O3} turns on all optimizations specified
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diff -durN gcc-4.4.4.orig/gcc/gcc.c gcc-4.4.4/gcc/gcc.c
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--- gcc-4.4.4.orig/gcc/gcc.c 2010-01-09 01:05:06.000000000 +0100
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+++ gcc-4.4.4/gcc/gcc.c 2010-05-16 19:11:30.000000000 +0200
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@@ -807,6 +807,7 @@
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%{H} %C %{D*&U*&A*} %{i*} %Z %i\
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%{fmudflap:-D_MUDFLAP -include mf-runtime.h}\
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%{fmudflapth:-D_MUDFLAP -D_MUDFLAPTH -include mf-runtime.h}\
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+ %{!D_FORTIFY_SOURCE:%{!D_FORTIFY_SOURCE=*:%{!U_FORTIFY_SOURCE:-D_FORTIFY_SOURCE=2}}}\
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%{E|M|MM:%W{o*}}";
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/* This contains cpp options which are common with cc1_options and are passed
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