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実行可能ファイルのビルドに使用されるコンパイル オプションを取得するためのマクロが c++ (gcc を使用) にありますか? ダイアログについてのいくつかでそのようなものを見たと確信しています。

どんな助けでも大歓迎です

PS: Detect GCC compile-time flags of a binary interest の質問は、プログラムをコンパイルするためにアクティブ化されたオプションを見つけることに関心がありますが、このプログラム ソース内からプログラムをコンパイルするために使用される正確なコマンド ライン オプションを見つけることに興味があります。

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Apart from creating the compile string from the Common Predefined Macros , which seems hectic. I think there is an easy way to do it. The gcc -V on debian gives back flags used for configuration.

However, my shot would be to get full command in ./configure equivalent step and dump it to some file like config_line.h as a define.

Something like:

./configure:

#!/bin/sh
echo "#define conf_flags \"configured with: "$*"\"" >> config_line.h
#do some configuration steps here
#maybe even compilation itself

Then:

luk32:~/projects/tests$ ./test.sh --with=test
luk32:~/projects/tests$ cat ./config_line.h 
#define conf_flags "configured with: --with=test"

You get full config line defined in the external file under a define statement. I think its fairly straight forward and easy to use. And no need for much compiler magic.

It is also worth of noting you can most probably (if not always) create such file(s) right before the actual compilation so they are actually up-to-date and valid during compilation step. Answer in get-the-compiler-options-from-a-compiled-executable would imply the executable already exists, which might be a bummer in some cases.

Note: I gave bash example, but I'm pretty sure you can output similar header file under any half-descent build system, be it make, qmake, cmake, etc. the bash begin the simplest case.

I think most of them have access to the command line they are invoked with, as well as they provide easy way to get actual compile command. For example to provide two literals, one with commands used for make like -j 13 and another g++ ... used for actual compilation step performed by make.

Note2: I know this is not an answer the OP asked, but I guess it serves his purpose in the 1st place.

于 2013-03-04T15:37:38.607 に答える
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私はqmakeビルドシステムを使用しているため、このソリューションに出くわしました:

この行を pro ファイルの最後に追加しました。

QMAKE_CXXFLAGS += -DFLAGS=\"$$QMAKE_CXXFLAGS $$QMAKE_CXXFLAGS_RELEASE\"

次に、FLAGS マクロから必要なものを取得しました

于 2013-03-04T17:59:06.807 に答える