fix pthread required library missing

Signed-off-by: Pantelis Antoniou <[email protected]>

configure.ac

@@ -4,12 +4,20 @@ AC_INIT([libfyaml],
         m4_esyscmd([build-aux/git-version-gen .tarball-version]),
 	[[email protected]])
 
+AC_CONFIG_AUX_DIR([build-aux])
+
+AC_PATH_PROG([M4], [m4 gm4], [no])
+if test "x$M4" = xno ; then
+   AC_MSG_ERROR([m4 missing])
+fi
+
+AC_SUBST(ACLOCAL_AMFLAGS, "-I m4")
+
 AC_CANONICAL_TARGET
 
 AC_CONFIG_SRCDIR([src/lib/fy-parse.c])
 AC_CONFIG_HEADERS([config.h])
 AC_CONFIG_MACRO_DIR([m4])
-AC_CONFIG_AUX_DIR([build-aux])
 AM_INIT_AUTOMAKE([foreign 1.8.5 subdir-objects -Wno-portability])
 
 m4_pattern_allow([^(AM_EXTRA_RECURSIVE_TARGETS|AM_PROG_AR)$])dnl
@@ -86,14 +94,15 @@ AC_PROG_CXX
 AC_PROG_AWK
 AC_PROG_LN_S
 
-AX_PTHREAD
+AX_PTHREAD([], [AC_MSG_ERROR("Missing required pthread support")])
 
-AC_PATH_PROG([M4], [m4 gm4], [no])
-if test "x$M4" = xno ; then
-   AC_MSG_ERROR([m4 missing])
+# in some cases PTHREAD_LIBS is empty - force -lpthread */
+if test "x$PTHREAD_LIBS" = "x"; then
+	PTHREAD_LIBS="-lpthread"
 fi
 
-AC_SUBST(ACLOCAL_AMFLAGS, "-I m4")
+CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
+LIBS="$LIBS $PTHREAD_LIBS"
 
 # pkg-config
 PKG_PROG_PKG_CONFIG
@@ -216,9 +225,6 @@ AM_CONDITIONAL([HAVE_ASAN],
 	       [ test x$HAVE_ASAN = x1 ])
 AC_DEFINE_UNQUOTED([HAVE_ASAN], [$HAVE_ASAN], [Define to 1 if ASAN is enabled])
 
-# include -lm in the link
-AC_SEARCH_LIBS([llrintf], [m], [], [AC_MSG_ERROR([unable to find the llrintf() function])])
-
 # check if there's a qsort_r available (musl does not have it)
 AC_CHECK_FUNC([qsort_r],
 	      HAVE_QSORT_R=1,
@@ -554,5 +560,4 @@ echo "
     TESTSUITECHECKOUT:     $TESTSUITECHECKOUT
     JSONTESTSUITEURL:      $JSONTESTSUITEURL
     JSONTESTSUITECHECKOUT: $JSONTESTSUITECHECKOUT
-
 "

libfyaml.pc.in

@@ -6,5 +6,5 @@ includedir=@includedir@
 Name: libfyaml
 Description: Fancy YAML 1.3 parser library
 Version: @PACKAGE_VERSION@
-Libs: -L${libdir} @ASAN_LIBS@ -lfyaml @PTHREAD_LIBS@
+Libs: -L${libdir} @ASAN_LIBS@ @PTHREAD_LIBS@ -lfyaml
 Cflags: -I${includedir} @ASAN_CFLAGS@ @PTHREAD_CFLAGS@