[Bug gcov-profile/100289] [11/12 Regression] libgcc/libgcov.h: bootstrap failure due to missing #include <sys/mman.h>

[rudi at heitbaum dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100289

--- Comment #13 from rudi at heitbaum dot com ---
I have looked further into this; and here are the locations of sys/mman.h, this
include comes from the glibc package. gcc builds in package #80, whilst glibc
builds in package #82. The dependancies - given the way the gcc11 configure
script works (and must be pulling from
/usr/include/x86_64-linux-gnu/sys/mman.h) is a recursive dependency.

Here are the packages in question. gcc:bootstrap does not have a glibc
dependency.

== gcc package ==
PKG_NAME="gcc"
PKG_DEPENDS_BOOTSTRAP="ccache:host autoconf:host binutils:host gmp:host
mpfr:host mpc:host zstd:host"
PKG_DEPENDS_TARGET="toolchain"
PKG_DEPENDS_HOST="ccache:host autoconf:host binutils:host gmp:host mpfr:host
mpc:host zstd:host glibc"
PKG_DEPENDS_INIT="toolchain"

== glibc package ==
PKG_NAME="glibc"
PKG_DEPENDS_TARGET="ccache:host autotools:host linux:host gcc:bootstrap
pigz:host Python3:host"
PKG_DEPENDS_INIT="glibc"

== here is the actual creation of mman.h (using gcc10.3.0) ==
grep sys/mman.h 82.log /usr/bin/install -c -m 644 sys/mman.h
/storage/home-rudi/LibreELEC.tv/build.LibreELEC-Generic.x86_64-10.0-devel/.sysroot/glibc.target/usr/include/sys/mman.h
/usr/bin/install -c -m 644 sys/mman.h
/storage/home-rudi/LibreELEC.tv/build.LibreELEC-Generic.x86_64-10.0-devel/install_pkg/glibc-2.33/usr/include/sys/mman.h

== the find after a full build ==
find . -name mman.h | grey sys/
./build.LibreELEC-Generic.x86_64-10.0-devel/install_pkg/glibc-2.33/usr/include/sys/mman.h
./build.LibreELEC-Generic.x86_64-10.0-devel/toolchain/x86_64-libreelec-linux-gnu/sysroot/usr/include/sys/mman.h
./build.LibreELEC-Generic.x86_64-10.0-devel/build/glibc-2.33/misc/sys/mman.h
./build.LibreELEC-Generic.x86_64-10.0-devel/build/glibc-2.33/include/sys/mman.h
./build.LibreELEC-Generic.x86_64-10.0-devel/build/gcc-10.3.0/fixincludes/tests/base/sys/mman.h
./build.LibreELEC-Generic.x86_64-10.0-devel/build/xorg-intel-gpu-tools-1.26/lib/stubs/syscalls/sys/mman.h