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Add -Wl,--as-needed flag for all executable builds #37821

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merged 8 commits into from
Mar 3, 2025
Merged

Add -Wl,--as-needed flag for all executable builds #37821

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2a77907
build: Add -Wl,--as-needed flag for all executable builds
enkiusz Feb 28, 2025
6313f0f
gn: Restrict --as-needed to only Linux builds using clang
enkiusz Feb 28, 2025
c97e514
Merge branch 'master' into link_as_needed
enkiusz Feb 28, 2025
670b297
typo
enkiusz Feb 28, 2025
1291a96
Merge branch 'master' into link_as_needed
enkiusz Mar 1, 2025
8e62814
gn: Blacklist instead of whitelist, include ios and explanatory comment
enkiusz Mar 3, 2025
c377aac
Merge branch 'master' into link_as_needed
enkiusz Mar 3, 2025
fd66a70
Merge branch 'master' into link_as_needed
enkiusz Mar 3, 2025
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6 changes: 6 additions & 0 deletions build/config/compiler/BUILD.gn
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Expand Up @@ -671,3 +671,9 @@ config("specs_default") {
ldflags = cflags
}
}

config("link_as_needed") {
if (current_os == "linux" && is_clang) {
ldflags = [ "-Wl,--as-needed" ]
}
}
5 changes: 5 additions & 0 deletions build/config/defaults.gni
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Expand Up @@ -61,6 +61,10 @@ declare_args() {
# Defaults configs for pie.
default_configs_pie = [ "${build_root}/config/compiler:pie_default" ]

# Default configs for GNU ld --as-needed
default_configs_link_as_needed =
[ "${build_root}/config/compiler:link_as_needed" ]

# Defaults configs for warnings.
default_configs_warnings =
[ "${build_root}/config/compiler:warnings_default" ]
Expand Down Expand Up @@ -124,3 +128,4 @@ default_configs += default_configs_extra

executable_default_configs = []
executable_default_configs += default_configs_pie
executable_default_configs += default_configs_link_as_needed
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