From: Rainer Orth <ro@CeBiTec.Uni-Bielefeld.DE>
Date: Wed, 16 Jul 2025 12:10:05 +0000 (+0100)
Subject: libctf: do not use mmap on Solaris 11
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=00d853d1fe7885d0a685584f32b7ed70485c6def;p=thirdparty%2Fbinutils-gdb.git

libctf: do not use mmap on Solaris 11

Writable mmaps and read are inconsistent with each other on Solaris 11.4,
which breaks archive writing.  Simply assert that Solaris 2.11 doesn't have
mmap, falling back to read(): the archive format is being bumped shortly, to
one with completely different writeout code, so this workaround need not
stay for long.

[nca: added commit log]

libctf/
	PR libctf/29292
	* configure.ac: Turn off mmap on Solaris 2.11.
	* configure: Regenerated.
---

diff --git a/libctf/configure b/libctf/configure
index 7466d56a18b..4c244da0100 100755
--- a/libctf/configure
+++ b/libctf/configure
@@ -15966,6 +15966,14 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
 
 
+case "${host}" in
+  # PR libctf/29292
+  # libctf's use of mmap doesn't work on Solaris 11.4, so disable it.
+  *-*-solaris2.11*)
+    ac_cv_func_mmap_fixed_mapped=no
+  ;;
+esac
+
 
 
 
diff --git a/libctf/configure.ac b/libctf/configure.ac
index fbd8ec12a14..dbe311c5af3 100644
--- a/libctf/configure.ac
+++ b/libctf/configure.ac
@@ -65,6 +65,14 @@ AM_MAINTAINER_MODE
 AM_INSTALL_LIBBFD
 ACX_PROG_CC_WARNING_OPTS([-Wall], [ac_libctf_warn_cflags])
 
+case "${host}" in
+  # PR libctf/29292
+  # libctf's use of mmap doesn't work on Solaris 11.4, so disable it.
+  *-*-solaris2.11*)
+    ac_cv_func_mmap_fixed_mapped=no
+  ;;
+esac
+
 GCC_AC_FUNC_MMAP
 # Needed for BFD capability checks.
 AC_SEARCH_LIBS(dlsym, dl)