component/gcc: enable default PIE

See merge request !1587

Revert eb1b1a41 to avoid the use of
`fPIC` flag as it is a "contagious" build option.

To not face the build error "relocation R_X86_64_32 against
.rodata.str1.8 can not be used when making a shared object; recompile
with -fPIC" while building a shared library without fPIC flag, `gcc` is
compiled with `-enable-default-pie` flag (which is a compilation option
used for `gcc` binaries provided by Debian by example, see `gcc -v`).
48 jobs for master in 0 seconds
Status Job ID Name Coverage
  External
passed Cloudooo.UnitTest-Master

00:15:10

passed ERP5.StandaloneDeploymentScriptTest-Debian.Buster

00:36:22

passed ERP5.StandaloneDeploymentScriptTest-Debian.Buster.Master

12:34:07

passed SlapOS.Eggs.UnitTest-Master.Python2

00:34:15

passed SlapOS.Eggs.UnitTest-Master.Python3

00:48:00

passed SlapOS.Eggs.UnitTest-Master.Python3Next

00:22:31

failed SlapOS.SoftwareReleases.IntegrationTest-Master

12:27:35

passed SlapOS.Theia.ResilienceTest-Master-ERP5

09:12:16

passed Wendelin.StandaloneDeploymentScriptTest-Debian.Buster

00:28:57

passed Wendelin.StandaloneDeploymentScriptTest-Debian.Buster.Master

09:04:25

passed ERP5.StandaloneDeploymentScriptTest-Debian.Buster

00:29:21

passed ERP5.StandaloneDeploymentScriptTest-Debian.Buster

00:28:28

passed SlapOS.Eggs.UnitTest-Master.Python2

02:56:52

passed SlapOS.Eggs.UnitTest-Master.Python2

00:25:58

passed SlapOS.Eggs.UnitTest-Master.Python2

00:25:53

passed SlapOS.Eggs.UnitTest-Master.Python2

00:37:13

failed SlapOS.Eggs.UnitTest-Master.Python2

00:30:09

failed SlapOS.Eggs.UnitTest-Master.Python2

00:30:34

failed SlapOS.Eggs.UnitTest-Master.Python2

00:31:22

failed SlapOS.Eggs.UnitTest-Master.Python2

00:27:31

failed SlapOS.Eggs.UnitTest-Master.Python2

00:24:42

failed SlapOS.Eggs.UnitTest-Master.Python2

00:22:37

failed SlapOS.Eggs.UnitTest-Master.Python2

00:23:32

failed SlapOS.Eggs.UnitTest-Master.Python2

00:18:51

failed SlapOS.Eggs.UnitTest-Master.Python2

00:21:40

failed SlapOS.Eggs.UnitTest-Master.Python2

00:19:09

failed SlapOS.Eggs.UnitTest-Master.Python2

00:16:27

failed SlapOS.Eggs.UnitTest-Master.Python2

00:18:12

failed SlapOS.Eggs.UnitTest-Master.Python2

00:19:55

failed SlapOS.Eggs.UnitTest-Master.Python2

00:15:10

passed SlapOS.Eggs.UnitTest-Master.Python3

03:09:58

failed SlapOS.Eggs.UnitTest-Master.Python3

00:38:37

failed SlapOS.Eggs.UnitTest-Master.Python3

00:20:00

passed SlapOS.Eggs.UnitTest-Master.Python3

02:48:39

failed SlapOS.Eggs.UnitTest-Master.Python3

00:48:54

failed SlapOS.Eggs.UnitTest-Master.Python3

00:21:46

failed SlapOS.Eggs.UnitTest-Master.Python3

00:18:15

failed SlapOS.Eggs.UnitTest-Master.Python3

00:24:51

failed SlapOS.Eggs.UnitTest-Master.Python3

00:33:13

passed SlapOS.Eggs.UnitTest-Master.Python3Next

00:39:15

passed SlapOS.Eggs.UnitTest-Master.Python3Next

00:29:38

failed SlapOS.Eggs.UnitTest-Master.Python3Next

00:37:15

passed SlapOS.Eggs.UnitTest-Master.Python3Next

03:38:05

failed SlapOS.SoftwareReleases.IntegrationTest-Master

12:13:15

passed Wendelin.StandaloneDeploymentScriptTest-Debian.Buster

00:29:43

passed Wendelin.StandaloneDeploymentScriptTest-Debian.Buster

00:28:08

passed Wendelin.StandaloneDeploymentScriptTest-Debian.Buster.Master

10:22:31

passed Wendelin.StandaloneDeploymentScriptTest-Debian.Buster.Master

11:28:36