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| author | Siddhesh Poyarekar <siddhesh@sourceware.org> | 2021-12-08 11:21:26 +0530 |
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| committer | Siddhesh Poyarekar <siddhesh@sourceware.org> | 2021-12-13 08:08:59 +0530 |
| commit | 23645707f12f2dd9d80b51effb2d9618a7b65565 (patch) | |
| tree | 3c02ef1768200f574de3f62d3acb76b6d0b77264 /INSTALL | |
| parent | 556a6126f8764bc66d03368b5ac3e26631556559 (diff) | |
| download | glibc-23645707f12f2dd9d80b51effb2d9618a7b65565.tar.gz glibc-23645707f12f2dd9d80b51effb2d9618a7b65565.tar.xz glibc-23645707f12f2dd9d80b51effb2d9618a7b65565.zip | |
Replace --enable-static-pie with --disable-default-pie
Build glibc programs and tests as PIE by default and enable static-pie automatically if the architecture and toolchain supports it. Also add a new configuration option --disable-default-pie to prevent building programs as PIE. Only the following architectures now have PIE disabled by default because they do not work at the moment. hppa, ia64, alpha and csky don't work because the linker is unable to handle a pcrel relocation generated from PIE objects. The microblaze compiler is currently failing with an ICE. GNU hurd tries to enable static-pie, which does not work and hence fails. All these targets have default PIE disabled at the moment and I have left it to the target maintainers to enable PIE on their targets. build-many-glibcs runs clean for all targets. I also tested x86_64 on Fedora and Ubuntu, to verify that the default build as well as --disable-default-pie work as expected with both system toolchains. Signed-off-by: Siddhesh Poyarekar <siddhesh@sourceware.org> Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Diffstat (limited to 'INSTALL')
| -rw-r--r-- | INSTALL | 18 |
1 files changed, 8 insertions, 10 deletions
diff --git a/INSTALL b/INSTALL index 899d7f1ed7..331d405e56 100644 --- a/INSTALL +++ b/INSTALL @@ -116,16 +116,14 @@ if 'CFLAGS' is specified it must enable optimization. For example: systems support shared libraries; you need ELF support and (currently) the GNU linker. -'--enable-static-pie' - Enable static position independent executable (static PIE) support. - Static PIE is similar to static executable, but can be loaded at - any address without help from a dynamic linker. All static - programs as well as static tests are built as static PIE, except - for those marked with no-pie. The resulting glibc can be used with - the GCC option, -static-pie, which is available with GCC 8 or - above, to create static PIE. This option also implies that glibc - programs and tests are created as dynamic position independent - executables (PIE) by default. +'--disable-default-pie' + Don't build glibc programs and the testsuite as position + independent executables (PIE). By default, glibc programs and tests + are created as position independent executables on targets that + support it. If the toolchain and architecture support it, static + executables are built as static PIE and the resulting glibc can be + used with the GCC option, -static-pie, which is available with GCC + 8 or above, to create static PIE. '--enable-cet' '--enable-cet=permissive' |