diff --git a/CMakeLists.txt b/CMakeLists.txt
index 46ae1f921..c29b4c5ab 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -287,6 +287,9 @@ if(CMAKE_Fortran_COMPILER_ID STREQUAL "GNU")
 endif()
 
 if(CMAKE_C_COMPILER_ID STREQUAL "GNU")
+  if(CMAKE_C_COMPILER_VERSION VERSION_GREATER "14.0")
+    add_compile_options(-std=gnu17)
+  endif()
   if(ENABLE_CXX) 
     if(CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
       add_compile_options(-fno-aggressive-loop-optimizations)
diff --git a/Makefile.am b/Makefile.am
index 3b4a6f122..2b67d67b5 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -63,6 +63,7 @@ AM_CFLAGS += $(GA_COPT)
 AM_CFLAGS += $(GA_C_WARN)
 AM_CFLAGS += $(CFLAG_NO_LOOP_OPT)
 AM_CFLAGS += $(CFLAG_NO_LOOP_VECT)
+AM_CFLAGS += $(CFLAG_STD_GNU17)
 AM_CXXFLAGS += $(GA_CXXOPT)
 AM_CXXFLAGS += $(GA_CXX_WARN)
 
diff --git a/configure.ac b/configure.ac
index 7ab91f6d1..1f86160e0 100644
--- a/configure.ac
+++ b/configure.ac
@@ -179,6 +179,7 @@ GA_SYS_WEAK_ALIAS
 GA_UNION_SEMUN
 GA_GNU_LOOP_OPT
 GA_GNU_LOOP_VECT
+GA_GNU_STD_GNU17
 
 # Checks for C type sizes.
 AC_CHECK_SIZEOF([void*])
diff --git a/global/src/sketch.c b/global/src/sketch.c
index f205029b3..79dd477b5 100644
--- a/global/src/sketch.c
+++ b/global/src/sketch.c
@@ -196,7 +196,7 @@ Integer pnga_sprs_array_count_sketch(Integer s_a, Integer size_k,
   pnga_put(*g_k,lo,hi,kbuf,&ld);
   free(kbuf);
   pnga_put(*g_w,lo,hi,kweights,&ld);
-  pnga_sync(SPA[hdl].grp);
+  pnga_pgroup_sync(SPA[hdl].grp);
   /* Create an output matrix of size_k by jdim */
   g_a = pnga_create_handle();
   if (trans) {
diff --git a/m4/ga_gnu_std_gnu17.m4 b/m4/ga_gnu_std_gnu17.m4
new file mode 100644
index 000000000..ffca7473e
--- /dev/null
+++ b/m4/ga_gnu_std_gnu17.m4
@@ -0,0 +1,23 @@
+# GA_GNU_STD_GNU17
+# ---------------
+# Add -std=gnu17 to the compiler flags if using
+# GNU compilers to avoid -std=gnu23 issues
+AC_DEFUN([GA_GNU_STD_GNU17], [
+AC_PREREQ([2.69]) dnl for _AC_LANG_PREFIX
+AC_CACHE_CHECK([for -std=gnu17 support in _AC_LANG compiler],
+    ga_cv_[]_AC_LANG_ABBREV[]_gnu_std_gnu17, [
+    ga_cv_[]_AC_LANG_ABBREV[]_gnu_std_gnu17=
+    save_[]_AC_LANG_PREFIX[]FLAGS="$[]_AC_LANG_PREFIX[]FLAGS"
+    []_AC_LANG_PREFIX[]FLAGS="$save_[]_AC_LANG_PREFIX[]FLAGS -std=gnu17"
+    save_ac_[]_AC_LANG_ABBREV[]_werror_flag="$ac_[]_AC_LANG_ABBREV[]_werror_flag"
+    AC_LANG_WERROR
+    rm -f a.out
+    touch a.out
+    AC_LINK_IFELSE([AC_LANG_PROGRAM([],[])],
+        ga_cv_[]_AC_LANG_ABBREV[]_gnu_std_gnu17=-std=gnu17)
+    []_AC_LANG_PREFIX[]FLAGS="$save_[]_AC_LANG_PREFIX[]FLAGS"
+    ac_[]_AC_LANG_ABBREV[]_werror_flag="$save_ac_[]_AC_LANG_ABBREV[]_werror_flag"
+    rm -f a.out
+    ])
+    AC_SUBST([]_AC_LANG_PREFIX[]FLAG_STD_GNU17, $ga_cv_[]_AC_LANG_ABBREV[]_gnu_std_gnu17)
+])