It is true that Clang does not support all gnu99 extensions [1],
but not all of them are used in the codebase and over time there
have been code cleanup efforts to improve Clang support.
For example after commit 779c57ea ("readelf: Pull advance_pc()
in file scope") there are no more nested function declarations
and elfutils now builds fine with Clang.
So in the interest of enabling Clang builds we remove the only
remaining blocker: the configure checks for nested functions and
variable length arrays which are also unused.
[1] https://sourceware.org/bugzilla/show_bug.cgi?id=24964
Signed-off-by: Adrian Ratiu
---
ChangeLog| 4
configure.ac | 11 ---
2 files changed, 4 insertions(+), 11 deletions(-)
diff --git a/ChangeLog b/ChangeLog
index 12b8f403..32f5b68d 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+2021-08-10 Adrian Ratiu
+
+ * configure.ac (AC_CACHE_CHECK): Drop unnecessary std=gnu99 checks
+
2021-07-28 Mark Wielaard
* configure.ac (AC_CHECK_DECLS): Add reallocarray check.
diff --git a/configure.ac b/configure.ac
index 7caff2c5..c14eb9f6 100644
--- a/configure.ac
+++ b/configure.ac
@@ -112,17 +112,6 @@ AC_COMPILE_IFELSE([AC_LANG_SOURCE([dnl
int foo (int a)
{
for (int i = 0; i < a; ++i) if (i % 4) break; int s = a; return s;
-}
-
-double bar (double a, double b)
-{
- double square (double z) { return z * z; }
- return square (a) + square (b);
-}
-
-void baz (int n)
-{
- struct S { int x[[n]]; };
}])],
ac_cv_c99=yes, ac_cv_c99=no)
CFLAGS="$old_CFLAGS"])
--
2.32.0
