Patch specifies that DJGPP do not have mmap() even when sys/mman.h is available.
libbacktrace is perhaps currently unusable for DJGPP but otherwise mmap()
usability
misdetection breaks cross-compiler build for DJGPP target (for example Linux
hosted
cross-compiler)
Andris
2015-12-05 Andris Pavenis <andris.pave...@iki.fi>
* configure.ac: Specify that DJGPP do not have mmap even when sys/mman.h exists
* configure: Regenerate
>From 5fb05d0ae112ae1c938c2edf94b8dff8cd5dd1d6 Mon Sep 17 00:00:00 2001
From: Andris Pavenis <andris.pave...@iki.fi>
Date: Tue, 24 Nov 2015 20:22:52 +0200
Subject: [PATCH 3/6] [DJGPP] libbacktrace/configure.ac: specify that DJGPP do not have mmap()
---
libbacktrace/configure | 3 ++-
libbacktrace/configure.ac | 3 ++-
2 files changed, 4 insertions(+), 2 deletions(-)
diff --git a/libbacktrace/configure b/libbacktrace/configure
index f8adc83..015c944 100755
--- a/libbacktrace/configure
+++ b/libbacktrace/configure
@@ -12301,9 +12301,10 @@ else
# simply assume that if we have mman.h, we have mmap.
have_mmap=yes
case "${host}" in
- spu-*-*)
+ spu-*-*|*-*-msdosdjgpp)
# The SPU does not have mmap, but it has a sys/mman.h header file
# containing "mmap_eaddr" and the mmap flags, confusing the test.
+ # DJGPP also has sys/man.h, but no mmap
have_mmap=no ;;
esac
else
diff --git a/libbacktrace/configure.ac b/libbacktrace/configure.ac
index 33866e9..7a0a157 100644
--- a/libbacktrace/configure.ac
+++ b/libbacktrace/configure.ac
@@ -267,9 +267,10 @@ else
# simply assume that if we have mman.h, we have mmap.
have_mmap=yes
case "${host}" in
- spu-*-*)
+ spu-*-*|*-*-msdosdjgpp)
# The SPU does not have mmap, but it has a sys/mman.h header file
# containing "mmap_eaddr" and the mmap flags, confusing the test.
+ # DJGPP also has sys/man.h, but no mmap
have_mmap=no ;;
esac
else
--
2.4.3
