https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70783
Bug ID: 70783
Summary: -spec option behavior is different to implicit spec
file
Product: gcc
Version: 4.8.5
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: driver
Assignee: unassigned at gcc dot gnu.org
Reporter: andreas.g.jhoss at gmx dot de
Target Milestone: ---
Created attachment 38339
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=38339&action=edit
The failing specs file
I can verify that easily on every Linux system with native compiler
Anyway I am using a gcc backcross compiler (Linux->Windows-Linux) with one
substitute rule.
Is this a lack of documentation or a bug ?
I put a spec file in /usr/lib/gcc/i686-pc-linux-gnu/4.8.5/specs or wherever the
specfile is searched and add a substitute rule (See attached file)
But the substitue rule is only recognized if I do the gcc call with option
-specs=....
Working :
g++ r:\test.cpp -nojhdefaultlibs -o r:\test
-specs=q:/gnuwinh5/bin/../lib/gcc/i686-pc-linux-gnu/4.8.5/
Reading specs from q:/gnuwinh5/bin/../lib/gcc/i686-pc-linux-gnu/4.8.5/specs
Reading specs from q:/gnuwinh5/bin/../lib/gcc/i686-pc-linux-gnu/4.8.5/specs
COLLECT_GCC=g++
COLLECT_LTO_WRAPPER=q:/gnuwinh5/bin/../libexec/gcc/i686-pc-linux-gnu/4.8.5/lto-wrapper.exe
Target: i686-pc-linux-gnu
......
Not Working :
If am using the implicit specs file with same path but option is not
recognized.
Reading specs from q:/gnuwinh5/bin/../lib/gcc/i686-pc-linux-gnu/4.8.5/specs
COLLECT_GCC=g++
COLLECT_LTO_WRAPPER=q:/gnuwinh5/bin/../libexec/gcc/i686-pc-linux-gnu/4.8.5/lto-wrapper.exe
g++: error: unrecognized command line option '-nojhdefaultlibs'
Target: i686-pc-linux-gnu
......
It doesn't matter what substitute rule I define and also where I define it
makes no difference
