From 019af622941ba93470c96cd148d4ca26941aafd0 Mon Sep 17 00:00:00 2001 From: Raul Tambre Date: Thu, 10 Nov 2022 22:23:35 +0200 Subject: expat: Activate POSIX APIs even without compiler extensions Compile with the preprocessor definitions necessary for the `arc4random` family so it's available even when compiler extensions are not enabled. Similar things are done in cmbzip2, cmcurl, cmlibarchive, cmliblizma and cmlibuv. This issue surfaced on a nightly bot after glibc 2.36 added arc4random functions. cmlibarchive defines the necessary macro, but also relies on `HAVE_ARC4RANDOM_BUF`. cmlibarchive's check with the necessary macro defined was skipped due to cmexpat running the same check before, but without the macros, and it being cached. This extends commit c7c3e39e4f (Utilities: Activate POSIX APIs even without compiler extensions, 2022-06-02, v3.24.0-rc1~34^2) to cover our build of expat too. Issue: #20454 --- Utilities/cmexpat/CMakeLists.txt | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'Utilities') diff --git a/Utilities/cmexpat/CMakeLists.txt b/Utilities/cmexpat/CMakeLists.txt index 9a62b79af9..81dfee3124 100644 --- a/Utilities/cmexpat/CMakeLists.txt +++ b/Utilities/cmexpat/CMakeLists.txt @@ -6,6 +6,12 @@ ELSEIF(CMAKE_C_COMPILER_ID STREQUAL "PathScale") SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -woffall") ENDIF() +# Activate POSIX APIs. +if(CMAKE_SYSTEM_NAME MATCHES "^(Linux)$") + add_definitions(-D_DEFAULT_SOURCE -D_BSD_SOURCE) + string(APPEND CMAKE_REQUIRED_DEFINITIONS " -D_DEFAULT_SOURCE -D_BSD_SOURCE") +endif() + include(ConfigureChecks.cmake) configure_file(expat_config.h.cmake expat_config.h @ONLY) -- cgit v1.2.1