apr: Cache configure tests which use AC_TRY_RUN

AC_TRY_RUN macro means the test needs to run to find the result and we
are cross compiling so this will always get wrong results, this results
in miscompiling apache2 on musl because it disables rlimit
(ac_cv_struct_rlimit) wrongly.

All these variables are determined with AC_TRY_RUN checks

Signed-off-by: Khem Raj <raj.khem@gmail.com>
Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>

2 files changed, 75 insertions, 2 deletions

diff --git a/meta/recipes-support/apr/apr/0001-configure-Remove-runtime-test-for-mmap-that-can-map-.patch b/meta/recipes-support/apr/apr/0001-configure-Remove-runtime-test-for-mmap-that-can-map-.patch
new file mode 100644
index 0000000000..fa6202da79
--- /dev/null
+++ b/meta/recipes-support/apr/apr/0001-configure-Remove-runtime-test-for-mmap-that-can-map-.patch
@@ -0,0 +1,62 @@
+From ee728971fd9d2da39356f1574d58d5daa3b24520 Mon Sep 17 00:00:00 2001
+From: Khem Raj <raj.khem@gmail.com>
+Date: Fri, 26 Aug 2022 00:28:08 -0700
+Subject: [PATCH] configure: Remove runtime test for mmap that can map
+ /dev/zero
+
+This never works for cross-compile moreover it ends up disabling
+ac_cv_file__dev_zero which then results in compiler errors in shared
+mutexes
+
+Upstream-Status: Inappropriate [Cross-compile specific]
+Signed-off-by: Khem Raj <raj.khem@gmail.com>
+---
+ configure.in | 32 --------------------------------
+ 1 file changed, 32 deletions(-)
+
+diff --git a/configure.in b/configure.in
+index a99049d..f1f55c7 100644
+--- a/configure.in
++++ b/configure.in
+@@ -1182,38 +1182,6 @@ AC_CHECK_FUNCS([mmap munmap shm_open shm_unlink shmget shmat shmdt shmctl \
+ APR_CHECK_DEFINE(MAP_ANON, sys/mman.h)
+ AC_CHECK_FILE(/dev/zero)
+ 
+-# Not all systems can mmap /dev/zero (such as HP-UX).  Check for that.
+-if test "$ac_cv_func_mmap" = "yes" &&
+-   test "$ac_cv_file__dev_zero" = "yes"; then
+-    AC_MSG_CHECKING(for mmap that can map /dev/zero)
+-    AC_TRY_RUN([
+-#include <sys/types.h>
+-#include <sys/stat.h>
+-#include <fcntl.h>
+-#ifdef HAVE_SYS_MMAN_H
+-#include <sys/mman.h>
+-#endif
+-    int main()
+-    {
+-        int fd;
+-        void *m;
+-        fd = open("/dev/zero", O_RDWR);
+-        if (fd < 0) {
+-            return 1;
+-        }
+-        m = mmap(0, sizeof(void*), PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0);
+-        if (m == (void *)-1) {  /* aka MAP_FAILED */
+-            return 2;
+-        }
+-        if (munmap(m, sizeof(void*)) < 0) {
+-            return 3;
+-        }
+-        return 0;
+-    }], [], [ac_cv_file__dev_zero=no], [ac_cv_file__dev_zero=no])
+-
+-    AC_MSG_RESULT($ac_cv_file__dev_zero)
+-fi
+-
+ # Now we determine which one is our anonymous shmem preference.
+ haveshmgetanon="0"
+ havemmapzero="0"
+-- 
+2.37.2
+
diff --git a/meta/recipes-support/apr/apr_1.7.0.bb b/meta/recipes-support/apr/apr_1.7.0.bb
index 07bf61545e..cb4bb936d7 100644
--- a/meta/recipes-support/apr/apr_1.7.0.bb
+++ b/meta/recipes-support/apr/apr_1.7.0.bb
@@ -25,6 +25,7 @@ SRC_URI = "${APACHE_MIRROR}/apr/${BPN}-${PV}.tar.bz2 \
            file://0001-Add-option-to-disable-timed-dependant-tests.patch \
            file://autoconf270.patch \
            file://0001-add-AC_CACHE_CHECK-for-strerror_r-return-type.patch \
+           file://0001-configure-Remove-runtime-test-for-mmap-that-can-map-.patch \
            file://CVE-2021-35940.patch \
            "
 
@@ -37,12 +38,22 @@ OE_BINCONFIG_EXTRA_MANGLE = " -e 's:location=source:location=installed:'"
 
 # Added to fix some issues with cmake. Refer to https://github.com/bmwcarit/meta-ros/issues/68#issuecomment-19896928
 CACHED_CONFIGUREVARS += "apr_cv_mutex_recursive=yes"
-
+# Enable largefile
+CACHED_CONFIGUREVARS += "apr_cv_use_lfs64=yes"
+# Additional AC_TRY_RUN tests which will need to be cached for cross compile
+CACHED_CONFIGUREVARS += "apr_cv_epoll=yes epoll_create1=yes apr_cv_sock_cloexec=yes \
+    ac_cv_struct_rlimit=yes \
+    ac_cv_func_sem_open=yes \
+    apr_cv_process_shared_works=yes \
+    apr_cv_mutex_robust_shared=yes \
+    "
 # Also suppress trying to use sctp.
 #
 CACHED_CONFIGUREVARS += "ac_cv_header_netinet_sctp_h=no ac_cv_header_netinet_sctp_uio_h=no"
 
-CACHED_CONFIGUREVARS += "ac_cv_sizeof_struct_iovec=yes"
+# ac_cv_sizeof_struct_iovec is deduced using runtime check which will fail during cross-compile
+CACHED_CONFIGUREVARS += "${@['ac_cv_sizeof_struct_iovec=16','ac_cv_sizeof_struct_iovec=8'][d.getVar('SITEINFO_BITS') != '32']}"
+
 CACHED_CONFIGUREVARS += "ac_cv_file__dev_zero=yes"
 
 CACHED_CONFIGUREVARS:append:libc-musl = " ac_cv_strerror_r_rc_int=yes"