diff options
| author | Nico Huber <nico.huber@secunet.com> | 2016-12-22 16:05:54 +0100 |
|---|---|---|
| committer | Martin Roth <martinroth@google.com> | 2016-12-27 23:34:12 +0100 |
| commit | 8bbd596de631adc8b677e69603e978b848eb1708 (patch) | |
| tree | 677cf97adb10bef5a89953449c9dfed0a0b65284 /util | |
| parent | 76f8dbc4f70469e0b5913796d6130e85df1cdd77 (diff) | |
buildgcc: Build GMP `--with-pic` if GCC defaults to `-pie`
GCC 6 can optionally default to building all binaries as position
independent executables (PIE). This breaks linking against static
libraries that are compiled without position independent code (PIC).
Building GMP `--with-pic` in this case seems to be the least fragile
solution.
TEST=Run `make all` and `make BUILDGCC_OPTIONS=-b build-i386` in
util/crossgcc on Debian Stretch.
Change-Id: I5f3185af9c8d599379a628e18724b217b88be974
Signed-off-by: Nico Huber <nico.huber@secunet.com>
Reviewed-on: https://review.coreboot.org/17936
Tested-by: build bot (Jenkins)
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
Diffstat (limited to 'util')
| -rwxr-xr-x | util/crossgcc/buildgcc | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/util/crossgcc/buildgcc b/util/crossgcc/buildgcc index 97c38b8d95..30e2188111 100755 --- a/util/crossgcc/buildgcc +++ b/util/crossgcc/buildgcc @@ -515,6 +515,13 @@ set_hostcflags_from_gmp() { } build_GMP() { + # Check if GCC enables `-pie` by default (possible since GCC 6). + # We need PIC in all static libraries then. + if "${CC}" -dumpspecs 2>/dev/null | grep -q '[{;][[:space:]]*:-pie\>' + then + OPTIONS="$OPTIONS --with-pic" + fi + CC="$CC" ../${GMP_DIR}/configure --disable-shared --enable-fat \ --prefix=$TARGETDIR $OPTIONS \ || touch .failed |