How does AOSP 9.0 build system link the executable?What does @ mean in this clang command in AOSP build log?How does AOSP build system produce .rsp files and how to get them?Building a Android 6 Messaging app out of AOSP treeWhile trying to build android source code, make clobber gives “no such file or directory”where is 'target-executable-hook' defined in AOSP?Failed to build AOSP [run_soong_ui] Error 1AOSP: Can't get prebuilt static libraries into their intermediary folders in order to link to other moduleserror: failed parsing overlays when build AOSP sourceHow to build AOSP Latin IME out of tree?Native Code coverage with android soong build systemHow to include custom splash.img in AOSP buildWhat does the command “PWD=/proc/self/cwd another_executable ” mean?
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How does AOSP 9.0 build system link the executable?
What does @ mean in this clang command in AOSP build log?How does AOSP build system produce .rsp files and how to get them?Building a Android 6 Messaging app out of AOSP treeWhile trying to build android source code, make clobber gives “no such file or directory”where is 'target-executable-hook' defined in AOSP?Failed to build AOSP [run_soong_ui] Error 1AOSP: Can't get prebuilt static libraries into their intermediary folders in order to link to other moduleserror: failed parsing overlays when build AOSP sourceHow to build AOSP Latin IME out of tree?Native Code coverage with android soong build systemHow to include custom splash.img in AOSP buildWhat does the command “PWD=/proc/self/cwd another_executable ” mean?
.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty margin-bottom:0;
With AOSP 9.0.0_r30 source code, first use these commands to output a
detailed build log during build:
make clean
make showcommands -j8 > ~/BuildAndroid.txt
Then search in ~/BuildAndroid.txt for "lld" (whole word match). I can't find anything. Clang linker should have the lld keyword.Search "ld" there are 50 results but they are hardly be the link commands.One of them is "ld.mc" which is a candidate,though.
And search for some cpp source file name like "TextDropShadowCache". I only get 2 commands, both of which are clang++ compilation commands.
The link command of libhwui.so references a file "libhwui.so.rsp" which seems to possibly (only guess) contains "TextDropShadowCache.o":
prebuilts/clang/host/linux-x86/clang-4691093/bin/clang++ /OpenSource/Build/Android/9.0.0_r30/soong/.intermediates/bionic/libc/crtbegin_so/android_x86_64_core/crtbegin_so.o @/OpenSource/Build/Android/9.0.0_r30/soong/.intermediates/frameworks/base/libs/hwui/libhwui/android_x86_64_core_shared/libhwui.so.rsp ......
If this is true, then how is libhwui.so.rsp produced?
The command also give rise to this question: What does @ mean in this clang command in AOSP build log?
according to the above question, @ means read a long command from a file, so it is highly possibly be a file that list all the obj files that libhwui.so needs.
So the problem is basically answered, but not verified because libhwui.so.rsp seems to be removed after build.
How does the AOSP 9.0 build system link the executable?
build android-source
asked Mar 26 at 3:41
jw_jw_
1249 bronze badges
add a comment |
With AOSP 9.0.0_r30 source code, first use these commands to output a
detailed build log during build:
make clean
make showcommands -j8 > ~/BuildAndroid.txt
Then search in ~/BuildAndroid.txt for "lld" (whole word match). I can't find anything. Clang linker should have the lld keyword.Search "ld" there are 50 results but they are hardly be the link commands.One of them is "ld.mc" which is a candidate,though.
And search for some cpp source file name like "TextDropShadowCache". I only get 2 commands, both of which are clang++ compilation commands.
The link command of libhwui.so references a file "libhwui.so.rsp" which seems to possibly (only guess) contains "TextDropShadowCache.o":
prebuilts/clang/host/linux-x86/clang-4691093/bin/clang++ /OpenSource/Build/Android/9.0.0_r30/soong/.intermediates/bionic/libc/crtbegin_so/android_x86_64_core/crtbegin_so.o @/OpenSource/Build/Android/9.0.0_r30/soong/.intermediates/frameworks/base/libs/hwui/libhwui/android_x86_64_core_shared/libhwui.so.rsp ......
If this is true, then how is libhwui.so.rsp produced?
The command also give rise to this question: What does @ mean in this clang command in AOSP build log?
according to the above question, @ means read a long command from a file, so it is highly possibly be a file that list all the obj files that libhwui.so needs.
So the problem is basically answered, but not verified because libhwui.so.rsp seems to be removed after build.
How does the AOSP 9.0 build system link the executable?
build android-source
asked Mar 26 at 3:41
jw_jw_
1249 bronze badges
add a comment |
With AOSP 9.0.0_r30 source code, first use these commands to output a
detailed build log during build:
make clean
make showcommands -j8 > ~/BuildAndroid.txt
Then search in ~/BuildAndroid.txt for "lld" (whole word match). I can't find anything. Clang linker should have the lld keyword.Search "ld" there are 50 results but they are hardly be the link commands.One of them is "ld.mc" which is a candidate,though.
And search for some cpp source file name like "TextDropShadowCache". I only get 2 commands, both of which are clang++ compilation commands.
The link command of libhwui.so references a file "libhwui.so.rsp" which seems to possibly (only guess) contains "TextDropShadowCache.o":
prebuilts/clang/host/linux-x86/clang-4691093/bin/clang++ /OpenSource/Build/Android/9.0.0_r30/soong/.intermediates/bionic/libc/crtbegin_so/android_x86_64_core/crtbegin_so.o @/OpenSource/Build/Android/9.0.0_r30/soong/.intermediates/frameworks/base/libs/hwui/libhwui/android_x86_64_core_shared/libhwui.so.rsp ......
If this is true, then how is libhwui.so.rsp produced?
The command also give rise to this question: What does @ mean in this clang command in AOSP build log?
according to the above question, @ means read a long command from a file, so it is highly possibly be a file that list all the obj files that libhwui.so needs.
So the problem is basically answered, but not verified because libhwui.so.rsp seems to be removed after build.
How does the AOSP 9.0 build system link the executable?
build android-source
asked Mar 26 at 3:41
jw_jw_
1249 bronze badges
With AOSP 9.0.0_r30 source code, first use these commands to output a
detailed build log during build:
make clean
make showcommands -j8 > ~/BuildAndroid.txt
Then search in ~/BuildAndroid.txt for "lld" (whole word match). I can't find anything. Clang linker should have the lld keyword.Search "ld" there are 50 results but they are hardly be the link commands.One of them is "ld.mc" which is a candidate,though.
And search for some cpp source file name like "TextDropShadowCache". I only get 2 commands, both of which are clang++ compilation commands.
The link command of libhwui.so references a file "libhwui.so.rsp" which seems to possibly (only guess) contains "TextDropShadowCache.o":
prebuilts/clang/host/linux-x86/clang-4691093/bin/clang++ /OpenSource/Build/Android/9.0.0_r30/soong/.intermediates/bionic/libc/crtbegin_so/android_x86_64_core/crtbegin_so.o @/OpenSource/Build/Android/9.0.0_r30/soong/.intermediates/frameworks/base/libs/hwui/libhwui/android_x86_64_core_shared/libhwui.so.rsp ......
If this is true, then how is libhwui.so.rsp produced?
The command also give rise to this question: What does @ mean in this clang command in AOSP build log?
according to the above question, @ means read a long command from a file, so it is highly possibly be a file that list all the obj files that libhwui.so needs.
So the problem is basically answered, but not verified because libhwui.so.rsp seems to be removed after build.
How does the AOSP 9.0 build system link the executable?
build android-source
build android-source
asked Mar 26 at 3:41
jw_jw_
1249 bronze badges
asked Mar 26 at 3:41
jw_jw_
1249 bronze badges
edited Apr 1 at 4:59
jw_
asked Mar 26 at 3:41
jw_jw_
1249 bronze badges
asked Mar 26 at 3:41
jw_jw_
1249 bronze badges
asked Mar 26 at 3:41
jw_jw_
1249 bronze badges
1249 bronze badges
add a comment |
add a comment |
1 Answer
1
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votes
I found the link command line for pppd,it just use
prebuilts/clang/host/linux-x86/clang-4691093/bin/clang++
with all the .o/.a/.so file as input,and pppd as output.
But this still does not explain why there are no link commands that use TextDropShadowCache.o as input,maybe they use some script to read multiple .o files?
answered Mar 27 at 4:29
jw_jw_
1249 bronze badges
You have found an example of the common practice (perhaps today more often than not) of having the compiler invoke the linker (either only, or in addition to doing some compilation), rather than directly invoking it yourself.
– Chris Stratton
Mar 27 at 19:45
What about TextDropShadowCache.o?
– jw_
Mar 28 at 0:37
add a comment |
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I found the link command line for pppd,it just use
prebuilts/clang/host/linux-x86/clang-4691093/bin/clang++
with all the .o/.a/.so file as input,and pppd as output.
But this still does not explain why there are no link commands that use TextDropShadowCache.o as input,maybe they use some script to read multiple .o files?
answered Mar 27 at 4:29
jw_jw_
1249 bronze badges
You have found an example of the common practice (perhaps today more often than not) of having the compiler invoke the linker (either only, or in addition to doing some compilation), rather than directly invoking it yourself.
– Chris Stratton
Mar 27 at 19:45
What about TextDropShadowCache.o?
– jw_
Mar 28 at 0:37
add a comment |
I found the link command line for pppd,it just use
prebuilts/clang/host/linux-x86/clang-4691093/bin/clang++
with all the .o/.a/.so file as input,and pppd as output.
But this still does not explain why there are no link commands that use TextDropShadowCache.o as input,maybe they use some script to read multiple .o files?
answered Mar 27 at 4:29
jw_jw_
1249 bronze badges
You have found an example of the common practice (perhaps today more often than not) of having the compiler invoke the linker (either only, or in addition to doing some compilation), rather than directly invoking it yourself.
– Chris Stratton
Mar 27 at 19:45
What about TextDropShadowCache.o?
– jw_
Mar 28 at 0:37
add a comment |
I found the link command line for pppd,it just use
prebuilts/clang/host/linux-x86/clang-4691093/bin/clang++
with all the .o/.a/.so file as input,and pppd as output.
But this still does not explain why there are no link commands that use TextDropShadowCache.o as input,maybe they use some script to read multiple .o files?
answered Mar 27 at 4:29
jw_jw_
1249 bronze badges
I found the link command line for pppd,it just use
prebuilts/clang/host/linux-x86/clang-4691093/bin/clang++
with all the .o/.a/.so file as input,and pppd as output.
But this still does not explain why there are no link commands that use TextDropShadowCache.o as input,maybe they use some script to read multiple .o files?
answered Mar 27 at 4:29
jw_jw_
1249 bronze badges
answered Mar 27 at 4:29
jw_jw_
1249 bronze badges
answered Mar 27 at 4:29
jw_jw_
1249 bronze badges
answered Mar 27 at 4:29
jw_jw_
1249 bronze badges
1249 bronze badges
You have found an example of the common practice (perhaps today more often than not) of having the compiler invoke the linker (either only, or in addition to doing some compilation), rather than directly invoking it yourself.
– Chris Stratton
Mar 27 at 19:45
What about TextDropShadowCache.o?
– jw_
Mar 28 at 0:37
add a comment |
You have found an example of the common practice (perhaps today more often than not) of having the compiler invoke the linker (either only, or in addition to doing some compilation), rather than directly invoking it yourself.
– Chris Stratton
Mar 27 at 19:45
What about TextDropShadowCache.o?
– jw_
Mar 28 at 0:37
You have found an example of the common practice (perhaps today more often than not) of having the compiler invoke the linker (either only, or in addition to doing some compilation), rather than directly invoking it yourself.
– Chris Stratton
Mar 27 at 19:45
You have found an example of the common practice (perhaps today more often than not) of having the compiler invoke the linker (either only, or in addition to doing some compilation), rather than directly invoking it yourself.
– Chris Stratton
Mar 27 at 19:45
What about TextDropShadowCache.o?
– jw_
Mar 28 at 0:37
What about TextDropShadowCache.o?
– jw_
Mar 28 at 0:37
add a comment |
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