[Valgrind-developers] [valgrind] regtest: add check for -Wl, --no-warn-execstack

[Paul F. <pa...@so...>]

https://sourceware.org/git/gitweb.cgi?p=valgrind.git;h=7deeb51a44392f26712f3a429813491423c405e9

commit 7deeb51a44392f26712f3a429813491423c405e9
Author: Paul Floyd <pj...@wa...>
Date:   Sun Dec 22 16:49:11 2024 +0100

    regtest: add check for -Wl,--no-warn-execstack

Diff:
---
 configure.ac           | 16 ++++++++++++++++
 none/tests/Makefile.am |  2 +-
 2 files changed, 17 insertions(+), 1 deletion(-)

diff --git a/configure.ac b/configure.ac
index 7c417eb9d7..cb1dc69d35 100755
--- a/configure.ac
+++ b/configure.ac
@@ -3100,6 +3100,22 @@ AC_LINK_IFELSE(
 CFLAGS=$safe_CFLAGS
 fi
 
+# check if linker accepts --no-warn-execstack
+AC_MSG_CHECKING([if the linker accepts -Wl,--no-warn-execstack])
+safe_CFLAGS=$CFLAGS
+CFLAGS="-Wl,--no-warn-execstack"
+
+AC_LINK_IFELSE(
+[AC_LANG_PROGRAM([ ], [return 0;])],
+[
+  AC_SUBST([FLAG_NO_WARN_EXECSTACK], ["-Wl,--no-warn-execstack"])
+  AC_MSG_RESULT([yes])
+], [
+  AC_SUBST([FLAG_NO_WARN_EXECSTACK], [""])
+  AC_MSG_RESULT([no])
+])
+CFLAGS=$safe_CFLAGS
+
 # does the ppc assembler support "mtocrf" et al?
 AC_MSG_CHECKING([if ppc32/64 as supports mtocrf/mfocrf])
 
diff --git a/none/tests/Makefile.am b/none/tests/Makefile.am
index 76825b9478..3dc8762514 100644
--- a/none/tests/Makefile.am
+++ b/none/tests/Makefile.am
@@ -335,7 +335,7 @@ endif
 
 if HAVE_NESTED_FUNCTIONS
    check_PROGRAMS += nestedfns
-   nestedfns_LDFLAGS = -Wl,--no-warn-execstack
+   nestedfns_LDFLAGS = @FLAG_NO_WARN_EXECSTACK@
 endif
 
 # This doesn't appear to be compilable on Darwin.