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Copied the NO_UNDEFINED magic from libcurl to make this build fine ag…

…ain with

libtool cross-compiled on linux with mingw32
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commit 2fc66d7b0131f33261ecd3f9a2ddd8b827ec8a52 1 parent e75c876
@bagder authored
Showing with 19 additions and 1 deletion.
  1. +7 −1 Makefile.am
  2. +12 −0 configure.ac
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8 Makefile.am
@@ -43,7 +43,13 @@ VER=-version-info 1:0:0
# set age to 0. (c:r:a=0)
#
-libcares_la_LDFLAGS = $(VER)
+if NO_UNDEFINED
+# The -no-undefined flag is crucial for this to build fine on some platforms
+UNDEF = -no-undefined
+endif
+
+
+libcares_la_LDFLAGS = $(UNDEF) $(VER)
# Makefile.inc provides the CSOURCES and HHEADERS defines
include Makefile.inc
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12 configure.ac
@@ -69,6 +69,18 @@ dnl libtool setup
CARES_CLEAR_LIBTOOL_TAGS
AC_PROG_LIBTOOL
+AC_MSG_CHECKING([if we need -no-undefined])
+case $host in
+ *-*-cygwin | *-*-mingw* | *-*-pw32*)
+ need_no_undefined=yes
+ ;;
+ *)
+ need_no_undefined=no
+ ;;
+esac
+AC_MSG_RESULT($need_no_undefined)
+AM_CONDITIONAL(NO_UNDEFINED, test x$need_no_undefined = xyes)
+
dnl Checks for header files.
AC_HEADER_STDC
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