[Bug ada/79403] New: Installation of Ada compiler gets permissions wrong

["vogt at linux dot vnet.ibm.com" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79403

            Bug ID: 79403
           Summary: Installation of Ada compiler gets permissions wrong
           Product: gcc
           Version: 7.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: ada
          Assignee: unassigned at gcc dot gnu.org
          Reporter: vogt at linux dot vnet.ibm.com
  Target Milestone: ---
              Host: s390x
            Target: s390x

"make install" of the Ada compiler installs the contests of the adainclude and
adalib directories with incorrect permissions. The installed compiler is only
usable by the user who installed it:

  $ su - root
  $ cd gcc/build
  # configure and build the compiler using e.g. --prefix=/usr/local
  $ umask 022
  $ make install
  $ cd /usr/local/lib/gcc/s390x-ibm-linux-gnu/6.3.0
  $ ls -l adainclude | head -10
total 15088
-r--r----- 1 root root   2830 Feb  3 13:56 a-assert.adb
-r--r----- 1 root root   3742 Feb  3 13:56 a-assert.ads
-r--r----- 1 root root   3126 Feb  3 13:56 a-astaco.adb
-r--r----- 1 root root   2111 Feb  3 13:56 a-astaco.ads
-r--r----- 1 root root  21464 Feb  3 13:56 a-btgbso.adb
-r--r----- 1 root root   5460 Feb  3 13:56 a-btgbso.ads
-r--r----- 1 root root   4345 Feb  3 13:56 a-calari.adb
-r--r----- 1 root root   3420 Feb  3 13:56 a-calari.ads
-r--r----- 1 root root   5341 Feb  3 13:56 a-calcon.adb
  $ ls -l adalib | head -10 
total 43416
-r--r----- 1 root root     1702 Feb  3 14:31 a-assert.ali
-r--r----- 1 root root    14582 Feb  3 14:31 a-btgbso.ali
-r--r----- 1 root root     2587 Feb  3 14:31 a-calari.ali
-r--r----- 1 root root     4169 Feb  3 14:31 a-calcon.ali
-r--r----- 1 root root     3224 Feb  3 14:31 a-caldel.ali
-r--r----- 1 root root    19503 Feb  3 14:31 a-calend.ali
-r--r----- 1 root root    14967 Feb  3 14:31 a-calfor.ali
-r--r----- 1 root root     1985 Feb  3 14:31 a-catizo.ali
-r--r----- 1 root root    38194 Feb  3 14:31 a-cbdlli.ali

For some reason, world read access is removed by the installation routines.