In configure.as we attempt to add compiler flags by detecting whether or
not the compiler accepts them. It's unreliable on Solaris:
SVN_CFLAGS_ADD_IFELSE([-fno-inline])
SVN_CFLAGS_ADD_IFELSE([-fno-omit-frame-pointer])
$ touch x.c
$ cc -c -fno-omit-frame-pointer x.c
cc: Warning: Option -fomit-frame-pointer passed to ld, if ld is invoked,
ignored otherwise
"x.c", line 1: warning: empty translation unit
$ echo $?
0
I think that counts as working as far as SVN_CFLAGS_ADD_IFELSE is
concerned, these flags certainly get added.
However adding these flags causes the compiler to fail to link:
$ echo 'int main(){}' > x.c
$ cc -fomit-frame-pointer x.c
cc: Warning: Option -fomit-frame-pointer passed to ld, if ld is invoked,
ignored otherwise
ld: fatal: option -f and building a dynamic executable are incompatible
ld: fatal: Flags processing errors
So we have to get SVN_CFLAGS_ADD_IFELSE to recognise that these flags
should not be added. I suppose we could change the AC_COMPILE_IFELSE to
an AC_LINK_IFELSE.
--
Philip Martin | Subversion Committer
WANdisco // *Non-Stop Data*
