http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59447
Bug ID: 59447
Summary: --with-dwarf2 is not propagated correctly, will always
create dwarf4 by default
Product: gcc
Version: 4.8.2
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: bootstrap
Assignee: unassigned at gcc dot gnu.org
Reporter: rose.garcia-eggl2fk at yopmail dot com
even if one manages that --with-dwarf2 gets properly redirected to
gcc/configure from the toplevel configure script ( i used
GCC_DWARF_CONFFLAGS="--with-dwarf2=yes" ;
export host_configargs="$GCC_DWARF_CONFFLAGS" ;
export target_configargs="$GCC_DWARF_CONFFLAGS" ;
export build_configargs="$GCC_DWARF_CONFFLAGS" ;
plus i passed it to top-level configure), gcc will still default to DWARF4, and
all created binaries will have dwarf4 debug info, unless -gdwarf-2 was passed
explicitly on the command line.
the culprit is this line
gcc-4.8.2/gcc/common.opt:Common Joined UInteger Var(dwarf_version) Init(4)
Negative(gstabs)
introduced in commit
http://repo.or.cz/w/official-gcc.git/commitdiff/052166fd4a8051c7dc4c87d408be091c99aafd55
note that even the command below still talks about dwarf2.
i see nothing in the build system that would fill in the required 2 here
instead of the 4, and indeed the generated options.c has dwarf_version = 4 in
it.
