[Crash-utility] Re: [PATCH v2] Use CC env var to get compiler version

Date: Mon, 26 May 2025 11:03:24 +0200 From: kelefa.sane(a)smile.fr Subject: [Crash-utility] [meta-oe][PATCH v2] Use CC env var to get compiler version To: devel(a)lists.crash-utility.osci.io Cc: Kéléfa Sané <kelefa.sane(a)smile.fr&gt; Message-ID: <20250526090324.3113589-1-kelefa.sane(a)smile.fr&gt; Content-Type: text/plain; charset=UTF-8 From: Kéléfa Sané <kelefa.sane(a)smile.fr&gt; The source file build_data.c generated at compilation time define a variable compiler_version which is obtained by calling "gcc --version" cmd. This call retrieve the native gcc compiler install on host build machine but not necessarily the compiler use to build the project (ex: cross compilation).

The CC env variable commonly used in Makefile project define the compiler to use at build, so this is the appropriate way to retrieve the compiler version, when the CC env var is define.

Signed-off-by: Kéléfa Sané <kelefa.sane(a)smile.fr&gt; --- configure.c | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-) diff --git a/configure.c b/configure.c index 4668c9a..4b65bd7 100644 --- a/configure.c +++ b/configure.c @@ -1362,7 +1362,17 @@ make_build_data(char *target) fp1 = popen("date", "r"); fp2 = popen("id", "r"); - fp3 = popen("gcc --version", "r"); + + const char *cc_env = getenv("CC"); + if(NULL == cc_env) { + fp3 = popen("gcc --version", "r"); + } + else { + char compiler_version_cmd[512]; + + snprintf(compiler_version_cmd, sizeof(compiler_version_cmd), "%s --version", cc_env); + fp3 = popen(compiler_version_cmd, "r"); + } if ((fp4 = fopen("build_data.c", "w")) == NULL) { perror("build_data.c");