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From 1ec7b2208803e0fbdcbe6c07b849e7dc4d9fa8a2 Mon Sep 17 00:00:00 2001
From: Hongxu Jia <hongxu.jia@windriver.com>
Date: Fri, 23 Aug 2019 10:17:25 +0800
Subject: [PATCH] musl-obstack-fts
Look for libfts and libobstack during configure, these
libraries are external to libc when using musl, whereas
on glibc these libraries are provided in libc itself.
Signed-off-by: Khem Raj <raj.khem@gmail.com>
Upstream-Status: Inappropriate [workaround for musl]
Rebase to 0.177
Signed-off-by: Hongxu Jia <hongxu.jia@windriver.com>
---
configure.ac | 54 +++++++++++++++++++++++++++++++++++++++++++++++
libdw/Makefile.am | 2 +-
src/Makefile.am | 6 +++---
3 files changed, 58 insertions(+), 4 deletions(-)
diff --git a/configure.ac b/configure.ac
index e9649c2..03643c8 100644
--- a/configure.ac
+++ b/configure.ac
@@ -538,6 +538,60 @@ else
fi
AC_SUBST([argp_LDADD])
+dnl Check if we have fts available from our libc
+AC_LINK_IFELSE(
+ [AC_LANG_PROGRAM(
+ [#if !defined(__x86_64__)
+ #undef _FILE_OFFSET_BITS
+ #define _FILE_OFFSET_BITS 32
+ #endif
+ #include <fts.h>],
+ [FTS* fts = 0; return fts_close(fts); return 0;]
+ )],
+ [libc_has_fts="true"],
+ [libc_has_fts="false"]
+)
+
+dnl If our libc doesn't provide fts, then test for libfts
+if test "$libc_has_fts" = "false" ; then
+ AC_MSG_WARN("libc does not have fts")
+ AC_CHECK_LIB([fts], [fts_close], [have_fts="true"], [have_fts="false"])
+
+ if test "$have_fts" = "false"; then
+ AC_MSG_ERROR("no libfts found")
+ else
+ fts_LDADD="-lfts"
+ fi
+else
+ fts_LDADD=""
+fi
+AC_SUBST([fts_LDADD])
+
+dnl Check if we have obstack available from our libc
+AC_LINK_IFELSE(
+ [AC_LANG_PROGRAM(
+ [#include <obstack.h>],
+ [_obstack_begin(0, 0, 0, NULL, NULL); return 0;]
+ )],
+ [libc_has_obstack="true"],
+ [libc_has_obstack="false"]
+)
+
+dnl If our libc doesn't provide obstack, then test for libobstack
+if test "$libc_has_obstack" = "false" ; then
+ AC_MSG_WARN("libc does not have obstack")
+ AC_CHECK_LIB([obstack], [_obstack_begin], [have_obstack="true"], [have_obstack="false"])
+
+ if test "$have_obstack" = "false"; then
+ AC_MSG_ERROR("no libobstack found")
+ else
+ obstack_LDADD="-lobstack"
+ fi
+else
+ obstack_LDADD=""
+fi
+AC_SUBST([obstack_LDADD])
+
dnl The directories with content.
dnl Documentation.
diff --git a/libdw/Makefile.am b/libdw/Makefile.am
index 33b5838..ff92e02 100644
--- a/libdw/Makefile.am
+++ b/libdw/Makefile.am
@@ -109,7 +109,7 @@ libdw_so_LIBS = ../libebl/libebl_pic.a ../backends/libebl_backends_pic.a \
../libcpu/libcpu_pic.a libdw_pic.a ../libdwelf/libdwelf_pic.a \
../libdwfl/libdwfl_pic.a
libdw_so_DEPS = ../lib/libeu.a ../libelf/libelf.so
-libdw_so_LDLIBS = $(libdw_so_DEPS) -ldl -lz $(argp_LDADD) $(zip_LIBS) -pthread
+libdw_so_LDLIBS = $(libdw_so_DEPS) -ldl -lz $(argp_LDADD) $(fts_LDADD) $(zip_LIBS) -pthread
libdw_so_SOURCES =
libdw.so$(EXEEXT): $(srcdir)/libdw.map $(libdw_so_LIBS) $(libdw_so_DEPS)
$(AM_V_CCLD)$(LINK) $(dso_LDFLAGS) -o $@ \
diff --git a/src/Makefile.am b/src/Makefile.am
index 13d9bda..d5a4f7d 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -69,7 +69,7 @@ ar_no_Wstack_usage = yes
unstrip_no_Wstack_usage = yes
readelf_LDADD = $(libdw) $(libebl) $(libelf) $(libeu) $(argp_LDADD)
-nm_LDADD = $(libdw) $(libebl) $(libelf) $(libeu) $(argp_LDADD) \
+nm_LDADD = $(libdw) $(libebl) $(libelf) $(libeu) $(argp_LDADD) $(obstack_LDADD) \
$(demanglelib)
size_LDADD = $(libelf) $(libeu) $(argp_LDADD)
strip_LDADD = $(libebl) $(libelf) $(libdw) $(libeu) $(argp_LDADD)
@@ -78,9 +78,9 @@ findtextrel_LDADD = $(libdw) $(libelf) $(libeu) $(argp_LDADD)
addr2line_LDADD = $(libdw) $(libelf) $(libeu) $(argp_LDADD) $(demanglelib)
elfcmp_LDADD = $(libebl) $(libdw) $(libelf) $(libeu) $(argp_LDADD)
objdump_LDADD = $(libasm) $(libebl) $(libdw) $(libelf) $(libeu) $(argp_LDADD)
-ranlib_LDADD = libar.a $(libelf) $(libeu) $(argp_LDADD)
+ranlib_LDADD = libar.a $(libelf) $(libeu) $(argp_LDADD) $(obstack_LDADD)
strings_LDADD = $(libelf) $(libeu) $(argp_LDADD)
-ar_LDADD = libar.a $(libelf) $(libeu) $(argp_LDADD)
+ar_LDADD = libar.a $(libelf) $(libeu) $(argp_LDADD) $(obstack_LDADD)
unstrip_LDADD = $(libebl) $(libelf) $(libdw) $(libeu) $(argp_LDADD)
stack_LDADD = $(libebl) $(libelf) $(libdw) $(libeu) $(argp_LDADD) $(demanglelib)
elfcompress_LDADD = $(libebl) $(libelf) $(libdw) $(libeu) $(argp_LDADD)
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