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print compiler version in the kernel banner

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And provide kernel compiler version as a sysctl as well.
This is useful while we have gcc and clang cohabitation.
This could be even more useful when we have support
for external toolchains.

In cooperation with:	mjg
MFC after:		13 days
This commit is contained in:
Andriy Gapon 2013-02-02 11:58:35 +00:00
parent 499f60b10b
commit bfdcb3bcba
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=246246
4 changed files with 7 additions and 0 deletions
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2
sys/conf/newvers.sh
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@ -86,6 +86,7 @@ fi
touch version
v=`cat version` u=${USER:-root} d=`pwd` h=${HOSTNAME:-`hostname`} t=`date`
i=`${MAKE:-make} -V KERN_IDENT`
compiler_v=$($(${MAKE:-make} -V CC) -v 2>&1 | grep 'version')
for dir in /bin /usr/bin /usr/local/bin; do
if [ -x "${dir}/svnversion" ] && [ -z ${svnversion} ] ; then
@ -159,6 +160,7 @@ $COPYRIGHT
char sccs[sizeof(SCCSSTR) > 128 ? sizeof(SCCSSTR) : 128] = SCCSSTR;
char version[sizeof(VERSTR) > 256 ? sizeof(VERSTR) : 256] = VERSTR;
char compiler_version[] = "${compiler_v}";
char ostype[] = "${TYPE}";
char osrelease[sizeof(RELSTR) > 32 ? sizeof(RELSTR) : 32] = RELSTR;
int osreldate = ${RELDATE};

1
sys/kern/init_main.c
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@ -325,6 +325,7 @@ print_version(void *data __unused)
while (len > 0 && version[len - 1] == '\n')
len--;
printf("%.*s %s\n", len, version, machine);
printf("%s\n", compiler_version);
}
SYSINIT(announce, SI_SUB_COPYRIGHT, SI_ORDER_FIRST, print_caddr_t,

3
sys/kern/kern_mib.c
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@ -99,6 +99,9 @@ SYSCTL_INT(_kern, KERN_OSREV, osrevision, CTLFLAG_RD|CTLFLAG_CAPRD,
SYSCTL_STRING(_kern, KERN_VERSION, version, CTLFLAG_RD|CTLFLAG_MPSAFE,
version, 0, "Kernel version");
SYSCTL_STRING(_kern, KERN_VERSION, compiler_version, CTLFLAG_RD|CTLFLAG_MPSAFE,
compiler_version, 0, "Version of compiler used to compile kernel");
SYSCTL_STRING(_kern, KERN_OSTYPE, ostype, CTLFLAG_RD|CTLFLAG_MPSAFE|
CTLFLAG_CAPRD, ostype, 0, "Operating system type");

1
sys/sys/systm.h
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@ -49,6 +49,7 @@ extern int cold; /* nonzero if we are doing a cold boot */
extern int rebooting; /* kern_reboot() has been called. */
extern const char *panicstr; /* panic message */
extern char version[]; /* system version */
extern char compiler_version[]; /* system version */
extern char copyright[]; /* system copyright */
extern int kstack_pages; /* number of kernel stack pages */