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curl_compilers.m4: accept -Og flag - #1440

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MarcelRaad merged 1 commit into
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MarcelRaad:gcc_og
Apr 24, 2017
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curl_compilers.m4: accept -Og flag#1440
MarcelRaad merged 1 commit into
curl:masterfrom
MarcelRaad:gcc_og

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@MarcelRaad

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-Og, introduced in GCC 4.8, optimizes for debugging experience. When
specified in CFLAGS, it was always overridden by -O0 or -O2. Fix this
by adding it to flags_opt_all.

Ref: https://gcc.gnu.org/onlinedocs/gcc-4.8.0/gcc/Optimize-Options.html
Ref: #1404 (comment)

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@MarcelRaad, thanks for your PR! By analyzing the history of the files in this pull request, we identified @yangtse, @bagder and @dfandrich to be potential reviewers.

Comment thread m4/curl-compilers.m4 Outdated

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you could throw in -Ofast as well

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mention in the commit title this change is gcc specific
curl_compilers.m4: accept -Og gcc flag

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Thanks, how could I overlook -Ofast when studying the GCC optimization flags for almost an hour yesterday...
Changes pushed.

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looks good, one nitpick, it's curl-compilers.m4 not curl_compilers.m4

-Og, introduced in GCC 4.8, optimizes for debugging experience.
-Ofast, introduced in GCC 4.7, builds on -O3 and enables further
optimizations breaking strict standards compliance.
When specified in CFLAGS, these were always overridden by -O0 or -O2.
Fix this by adding them to flags_opt_all.

Ref: https://gcc.gnu.org/onlinedocs/gcc-4.8.0/gcc/Optimize-Options.html
Ref: curl#1404 (comment)
Closes curl#1440
@MarcelRaad
MarcelRaad merged commit 71d2d37 into curl:master Apr 24, 2017
@MarcelRaad
MarcelRaad deleted the gcc_og branch April 24, 2017 14:01
@MarcelRaad

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Thanks!

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3 participants