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is there g++ 7.2 option to emit a message when it is using a precompiled header file?
C++ Modules - why were they removed from C++0x? Will they be back later on?GCC and Precompiled HeadersWhy can templates only be implemented in the header file?Why do we need virtual functions in C++?C++11 introduced a standardized memory model. What does it mean? And how is it going to affect C++ programming?Why is reading lines from stdin much slower in C++ than Python?Image Processing: Algorithm Improvement for 'Coca-Cola Can' RecognitionWhy is my program slow when looping over exactly 8192 elements?When do i want to turn off “precompiled header” in visual studio?Replacing a 32-bit loop counter with 64-bit introduces crazy performance deviationsc++ automake precompiled header support on centosHow to make clang -E omit precompiled header
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I know about the '-H' option but that is way too verbose when the precompiled header is NOT used. What I want is the the output -H gives when it DOES use a preocompiled header.
I suspect the answer is "no" but I thought I'd throw a hail mary and ask here.
c++ g++ precompiled-headers
asked Mar 8 at 0:10
Jonathan CanoJonathan Cano
73
add a comment |
I know about the '-H' option but that is way too verbose when the precompiled header is NOT used. What I want is the the output -H gives when it DOES use a preocompiled header.
I suspect the answer is "no" but I thought I'd throw a hail mary and ask here.
c++ g++ precompiled-headers
asked Mar 8 at 0:10
Jonathan CanoJonathan Cano
73
Why do you ask? precompiled headers are just some "cache" of headers!
– Basile Starynkevitch
Mar 8 at 1:09
add a comment |
I know about the '-H' option but that is way too verbose when the precompiled header is NOT used. What I want is the the output -H gives when it DOES use a preocompiled header.
I suspect the answer is "no" but I thought I'd throw a hail mary and ask here.
c++ g++ precompiled-headers
asked Mar 8 at 0:10
Jonathan CanoJonathan Cano
73
I know about the '-H' option but that is way too verbose when the precompiled header is NOT used. What I want is the the output -H gives when it DOES use a preocompiled header.
I suspect the answer is "no" but I thought I'd throw a hail mary and ask here.
c++ g++ precompiled-headers
c++ g++ precompiled-headers
asked Mar 8 at 0:10
Jonathan CanoJonathan Cano
73
asked Mar 8 at 0:10
Jonathan CanoJonathan Cano
73
asked Mar 8 at 0:10
Jonathan CanoJonathan Cano
73
asked Mar 8 at 0:10
Jonathan CanoJonathan Cano
73
asked Mar 8 at 0:10
Jonathan CanoJonathan Cano
73
73
Why do you ask? precompiled headers are just some "cache" of headers!
– Basile Starynkevitch
Mar 8 at 1:09
add a comment |
Why do you ask? precompiled headers are just some "cache" of headers!
– Basile Starynkevitch
Mar 8 at 1:09
Why do you ask? precompiled headers are just some "cache" of headers!
– Basile Starynkevitch
Mar 8 at 1:09
Why do you ask? precompiled headers are just some "cache" of headers!
– Basile Starynkevitch
Mar 8 at 1:09
add a comment |
1 Answer
1
active
oldest
votes
Read the GCC option summary. Then read about the GCC preprocessor options. Read also about precompiled headers (conceptually, it is just some cache). They have limitations that I explained here.
Why can't you use -H and filter, perhaps by some script using grep or awk, its output? You could also use some -M* option.
Otherwise, you might write your own GCC plugin. It would use the PLUGIN_INCLUDE_FILE event.
My opinion is that writing a plugin for just that information is overkill.
At last, GCC is free software. You are allowed to get its source code and improve it (I am not sure it is worth the effort to understand the internals of GCC for just your purposes). You probably should publish your improvements under GPLv3+ (but that is an ethical or legal or open source licensing question, so off-topic here; be aware of the GCC runtime library exception). You could pay some GCC expert to do the work for you.
Future C++20 (or later) might have modules (see also this and read p1103r0). Of course, you'll need a more recent GCC than the old GCC 7. You could need to wait for GCC 10 or later.
Maybe you should look at other languages, e.g. Rust, Go, or Ocaml.
answered Mar 8 at 1:01
Basile StarynkevitchBasile Starynkevitch
179k13174375
add a comment |
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1 Answer
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1 Answer
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Read the GCC option summary. Then read about the GCC preprocessor options. Read also about precompiled headers (conceptually, it is just some cache). They have limitations that I explained here.
Why can't you use -H and filter, perhaps by some script using grep or awk, its output? You could also use some -M* option.
Otherwise, you might write your own GCC plugin. It would use the PLUGIN_INCLUDE_FILE event.
My opinion is that writing a plugin for just that information is overkill.
At last, GCC is free software. You are allowed to get its source code and improve it (I am not sure it is worth the effort to understand the internals of GCC for just your purposes). You probably should publish your improvements under GPLv3+ (but that is an ethical or legal or open source licensing question, so off-topic here; be aware of the GCC runtime library exception). You could pay some GCC expert to do the work for you.
Future C++20 (or later) might have modules (see also this and read p1103r0). Of course, you'll need a more recent GCC than the old GCC 7. You could need to wait for GCC 10 or later.
Maybe you should look at other languages, e.g. Rust, Go, or Ocaml.
answered Mar 8 at 1:01
Basile StarynkevitchBasile Starynkevitch
179k13174375
add a comment |
Read the GCC option summary. Then read about the GCC preprocessor options. Read also about precompiled headers (conceptually, it is just some cache). They have limitations that I explained here.
Why can't you use -H and filter, perhaps by some script using grep or awk, its output? You could also use some -M* option.
Otherwise, you might write your own GCC plugin. It would use the PLUGIN_INCLUDE_FILE event.
My opinion is that writing a plugin for just that information is overkill.
At last, GCC is free software. You are allowed to get its source code and improve it (I am not sure it is worth the effort to understand the internals of GCC for just your purposes). You probably should publish your improvements under GPLv3+ (but that is an ethical or legal or open source licensing question, so off-topic here; be aware of the GCC runtime library exception). You could pay some GCC expert to do the work for you.
Future C++20 (or later) might have modules (see also this and read p1103r0). Of course, you'll need a more recent GCC than the old GCC 7. You could need to wait for GCC 10 or later.
Maybe you should look at other languages, e.g. Rust, Go, or Ocaml.
answered Mar 8 at 1:01
Basile StarynkevitchBasile Starynkevitch
179k13174375
add a comment |
Read the GCC option summary. Then read about the GCC preprocessor options. Read also about precompiled headers (conceptually, it is just some cache). They have limitations that I explained here.
Why can't you use -H and filter, perhaps by some script using grep or awk, its output? You could also use some -M* option.
Otherwise, you might write your own GCC plugin. It would use the PLUGIN_INCLUDE_FILE event.
My opinion is that writing a plugin for just that information is overkill.
At last, GCC is free software. You are allowed to get its source code and improve it (I am not sure it is worth the effort to understand the internals of GCC for just your purposes). You probably should publish your improvements under GPLv3+ (but that is an ethical or legal or open source licensing question, so off-topic here; be aware of the GCC runtime library exception). You could pay some GCC expert to do the work for you.
Future C++20 (or later) might have modules (see also this and read p1103r0). Of course, you'll need a more recent GCC than the old GCC 7. You could need to wait for GCC 10 or later.
Maybe you should look at other languages, e.g. Rust, Go, or Ocaml.
answered Mar 8 at 1:01
Basile StarynkevitchBasile Starynkevitch
179k13174375
Read the GCC option summary. Then read about the GCC preprocessor options. Read also about precompiled headers (conceptually, it is just some cache). They have limitations that I explained here.
Why can't you use -H and filter, perhaps by some script using grep or awk, its output? You could also use some -M* option.
Otherwise, you might write your own GCC plugin. It would use the PLUGIN_INCLUDE_FILE event.
My opinion is that writing a plugin for just that information is overkill.
At last, GCC is free software. You are allowed to get its source code and improve it (I am not sure it is worth the effort to understand the internals of GCC for just your purposes). You probably should publish your improvements under GPLv3+ (but that is an ethical or legal or open source licensing question, so off-topic here; be aware of the GCC runtime library exception). You could pay some GCC expert to do the work for you.
Future C++20 (or later) might have modules (see also this and read p1103r0). Of course, you'll need a more recent GCC than the old GCC 7. You could need to wait for GCC 10 or later.
Maybe you should look at other languages, e.g. Rust, Go, or Ocaml.
answered Mar 8 at 1:01
Basile StarynkevitchBasile Starynkevitch
179k13174375
edited Mar 8 at 1:41
answered Mar 8 at 1:01
Basile StarynkevitchBasile Starynkevitch
179k13174375
answered Mar 8 at 1:01
Basile StarynkevitchBasile Starynkevitch
179k13174375
answered Mar 8 at 1:01
Basile StarynkevitchBasile Starynkevitch
179k13174375
179k13174375
add a comment |
add a comment |
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Why do you ask? precompiled headers are just some "cache" of headers!
– Basile Starynkevitch
Mar 8 at 1:09