https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68626
Bug ID: 68626
Summary: Compiling with "-flto -fuse-linker-plugin" gives
libtool error
Product: gcc
Version: lto
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: john.frankish at outlook dot com
Target Milestone: ---
Compiling some packages with "-flto -fuse-linker-plugin" gives a libtool error
during "make". Compiling the same package without "-flto -fuse-linker-plugin"
allows "make" to complete without errors.
Using gcc-4.9.1/binutils-2.24.51 or gcc-5.2.0/binutils-2.25.1
The problem seems to occur with a few 10's of packages (eg cogl-1.20.0), but
not with others (eg gnome-music-3.16.2).
Using cogl-1.20.0 as an example:
CC="gcc -flto -fuse-linker-plugin -mtune=generic -Os -pipe" CXX="g++ -flto
-fuse-linker-plugin -mtune=generic -Os -pipe -fno-exceptions -fno-rtti"
./configure --prefix=/usr/local --disable-static --localstatedir=/var
--enable-gles1 --enable-gles2 --enable-cogl-gst=yes
find . -name Makefile -type f -exec sed -i 's/-g -O2//g' {} \;
make
...
CC cogl-enum-types.lo
CCLD libcogl.la
../libtool: eval: line 1: syntax error: unexpected "|"
Makefile:1507: recipe for target 'libcogl.la' failed
make[4]: *** [libcogl.la] Error 2
This can be fixed by using NM="gcc-nm", but as binutils was compiled with lto
enabled, it shouldn't be required?
