From 521c3cc506b18c5c84d86e1e90d1daee39849b0c Mon Sep 17 00:00:00 2001 From: William Roberts Date: Mon, 8 Feb 2021 11:57:28 -0600 Subject: [PATCH] configure: make build gnu99 Signed-off-by: William Roberts [Retrieved from: https://github.com/tpm2-software/tpm2-tools/commit/521c3cc506b18c5c84d86e1e90d1daee39849b0c and updated to set gnu99 instead of c99 as done by https://github.com/tpm2-software/tpm2-tools/commit/5d0267428e96989afce406d096994ec5091ee107] Signed-off-by: Fabrice Fontaine --- configure.ac | 3 +++ 1 file changed, 3 insertions(+) diff --git a/configure.ac b/configure.ac index dc15b5595..25039a0d9 100644 --- a/configure.ac +++ b/configure.ac @@ -287,6 +287,9 @@ AC_DEFUN([add_c_flag], [ # -D_GNU_SOURCE is required for execvpe() in options.c add_c_flag([-D_GNU_SOURCE], [AC_MSG_ERROR([Cannot enable -D_GNU_SOURCE])]) +# Enable gnu99 mode, since we use some of these features. +add_c_flag([-std=gnu99], [AC_MSG_ERROR([Cannot enable -std=gnu99])]) + # Best attempt compiler options that are on newer versions of GCC that # we can't widely enforce without killing other peoples builds. # Works with gcc only. Needs to be disabled on BSD and clang