[clang] [flang] [flang][Driver] Enable -pie and -no-pie in flang's driver (PR #164890)

[David Truby via cfe-commits]

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@@ -0,0 +1,105 @@
+! Make sure that `-l` is "visible" to Flang's driver
+! RUN: %flang -lpgmath -### %s
+
+! Make sure that `-Wl` is "visible" to Flang's driver
+! RUN: %flang -Wl,abs -### %s
+
+! Make sure that `-fuse-ld' is "visible" to Flang's driver
+! RUN: %flang -fuse-ld= -### %s
+
+! Make sure that `-L' is "visible" to Flang's driver
+! RUN: %flang -L/ -### %s
+
+! ------------------------------------------------------------------------------
+! Check that '-pie' and '-no-pie' are "visible" to Flang's driver. Check that
+! the correct option is added to the link line.
+!
+! Last match "wins"
+! RUN: %flang -target x86_64-pc-linux-gnu -pie -no-pie -### %s 2>&1 \
+! RUN:     | FileCheck %s --check-prefix=NO-PIE
+! RUN: %flang -target x86_64-pc-linux-gnu -no-pie -pie -### %s 2>&1 \
+! RUN:     | FileCheck %s --check-prefix=PIE
+! RUN: %flang -target x86_64-pc-linux-gnu -pie -### %s 2>&1 \
+! RUN:     | FileCheck %s --check-prefix=PIE
+! RUN: %flang -target x86_64-pc-linux-gnu -no-pie -### %s 2>&1 \
+! RUN:     | FileCheck %s --check-prefix=NO-PIE
+!
+! Ensure that "-pie" is passed to the linker.
+! RUN: %flang -target i386-unknown-freebsd -pie -### %s 2>&1 \
+! RUN:     | FileCheck %s --check-prefix=PIE
+! RUN: %flang -target aarch64-pc-linux-gnu -pie -### %s 2>&1 \
+! RUN:     | FileCheck %s --check-prefix=PIE
+!
+! On Musl Linux, PIE is enabled by default, but can be disabled.
+! RUN: %flang -target x86_64-linux-musl -### %s 2>&1 \
+! RUN:   | FileCheck %s --check-prefix=PIE
+! RUN: %flang -target i686-linux-musl -### %s 2>&1 \
+! RUN:   | FileCheck %s --check-prefix=PIE
+! RUN: %flang -target armv6-linux-musleabihf %s -### 2>&1 \
+! RUN:   | FileCheck %s --check-prefix=PIE
+! RUN: %flang -target armv7-linux-musleabihf %s -### 2>&1 \
+! RUN:   | FileCheck %s --check-prefix=PIE
+! RUN: %flang --target=x86_64-linux-musl -no-pie -### 2>&1 \
+! RUN:   | FileCheck %s --check-prefix=NO-PIE
+!
+! On OpenBSD, -pie is not passed to the linker, but can be forced.
+! RUN: %flang -target amd64-pc-openbsd -### %s 2>&1 \
+! RUN:   | FileCheck %s --check-prefix=NO-PIE
+! RUN: %flang -target i386-pc-openbsd -### %s 2>&1 \
+! RUN:   | FileCheck %s --check-prefix=NO-PIE
+! RUN: %flang -target aarch64-unknown-openbsd -### %s 2>&1 \
+! RUN:   | FileCheck %s --check-prefix=NO-PIE
+! RUN: %flang -target arm-unknown-openbsd -### %s 2>&1 \
+! RUN:   | FileCheck %s --check-prefix=NO-PIE
+! RUN: %flang -target powerpc-unknown-openbsd -### %s 2>&1 \
+! RUN:   | FileCheck %s --check-prefix=NO-PIE
+! RUN: %flang -target sparc64-unknown-openbsd -### %s 2>&1 \
+! RUN:   | FileCheck %s --check-prefix=NO-PIE
+! RUN: %flang -target i386-pc-openbsd -pie -### %s 2>&1 \
+! RUN:   | FileCheck %s --check-prefix=PIE
+!
+! On FreeBSD, -pie is not passed to the linker, but can be forced.
+! RUN: %flang -target amd64-pc-freebsd -### %s 2>&1 \
+! RUN:   | FileCheck %s --check-prefix=NO-PIE
+! RUN: %flang -target i386-pc-freebsd -### %s 2>&1 \
+! RUN:   | FileCheck %s --check-prefix=NO-PIE
+! RUN: %flang -target aarch64-unknown-freebsd -### %s 2>&1 \
+! RUN:   | FileCheck %s --check-prefix=NO-PIE
+! RUN: %flang -target arm-unknown-freebsd -### %s 2>&1 \
+! RUN:   | FileCheck %s --check-prefix=NO-PIE
+! RUN: %flang -target powerpc-unknown-freebsd -### %s 2>&1 \
+! RUN:   | FileCheck %s --check-prefix=NO-PIE
+! RUN: %flang -target sparc64-unknown-freebsd -### %s 2>&1 \
+! RUN:   | FileCheck %s --check-prefix=NO-PIE
+! RUN: %flang -target i386-pc-freebsd -pie -### %s 2>&1 \
+! RUN:   | FileCheck %s --check-prefix=PIE
+!
+! On AIX, -pie is never passed to the linker.
+! RUN: %flang -target powerpc64-unknown-aix -### %s 2>&1 \
+! RUN:     | FileCheck %s --check-prefix=NO-PIE
+! RUN: %flang -target powerpc64-unknown-aix -pie -### %s 2>&1 \
+! RUN:     | FileCheck %s --check-prefix=NO-PIE
+! RUN: %flang -target powerpc64-unknown-aix -no-pie -### %s 2>&1 \
+! RUN:     | FileCheck %s --check-prefix=NO-PIE
+!
+! On MinGW and Windows, -pie may be specified, but it is ignored.
----------------
DavidTruby wrote:

nit: maybe check for the `warning: argument unused during compilation: '-(no-)pie'` message that gets printed?


https://github.com/llvm/llvm-project/pull/164890