---------- Forwarded message ---------- From: "Tim Northover" <[email protected]> Date: May 1, 2019 3:48 PM Subject: Re: [llvm-dev] Overriding macro values defined in source code To: "Sudhindra kulkarni" <[email protected]> Cc: "LLVM Developers Mailing List" <[email protected]>
On Tue, 30 Apr 2019 at 22:28, Sudhindra kulkarni via llvm-dev <[email protected]> wrote: > Is it possible to override the value of AVAL through the -D option? > For eg is it possible to set the value of AVAL to 2 through -D in clang ? This is more a question for the cfe-users list, but as far as I know there's no way to prevent redefinitions in source files. Cheers. Tim. Hi Team, Consider the below C code, #define AVAL 5 void func() { int a=5; if(a==AVAL) { //Do something } else { //Do something else } } My question is Is it possible to override the value of AVAL through the -D option? For eg is it possible to set the value of AVAL to 2 through -D in clang so that the else part executes? Also apart from -D option we are also open to other ways of achieving this Thanks in advance
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