From e4cc6437c1684039cfc3cb4a1723568b3de5f171 Mon Sep 17 00:00:00 2001
From: Brendan Cully <brendan@kublai.com>
Date: Sat, 11 Oct 2014 11:05:21 -0700
Subject: [PATCH] add check-syntax target for flymake

---
 Makefile.am      |  1 +
 doc/Makefile.am  |  2 ++
 flymake.am       | 12 ++++++++++++
 imap/Makefile.am |  1 +
 4 files changed, 16 insertions(+)
 create mode 100644 flymake.am

diff --git a/Makefile.am b/Makefile.am
index 8166b1b4..021e737b 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -1,5 +1,6 @@
 ## Process this file with automake to produce Makefile.in
 ## Use aclocal -I m4; automake --foreign
+include $(top_srcdir)/flymake.am
 
 AUTOMAKE_OPTIONS = 1.6 foreign
 EXTRA_PROGRAMS = mutt_dotlock pgpring pgpewrap mutt_md5
diff --git a/doc/Makefile.am b/doc/Makefile.am
index f4e21bce..42d918a4 100644
--- a/doc/Makefile.am
+++ b/doc/Makefile.am
@@ -1,3 +1,5 @@
+include $(top_srcdir)/flymake.am
+
 subdir = doc
 
 DSLROOT = @DSLROOT@
diff --git a/flymake.am b/flymake.am
new file mode 100644
index 00000000..62fbfd99
--- /dev/null
+++ b/flymake.am
@@ -0,0 +1,12 @@
+get_cs_flags = $(foreach target,$(subst .,_,$(subst -,_,$($(2)))),$($(target)_$(1)FLAGS))
+get_cs_all_flags = $(foreach type,$(2),$(call get_cs_flags,$(1),$(type)))
+get_cs_compile = $(if $(subst C,,$(1)),$($(1)COMPILE),$(COMPILE))
+get_cs_cmdline = $(call get_cs_compile,$(1)) $(call get_cs_all_flags,$(1),check_PROGRAMS bin_PROGRAMS lib_LTLIBRARIES) -fsyntax-only
+
+check-syntax:
+	s=$(suffix $(CHK_SOURCES));\
+	if   [ "$$s" = ".c"   ]; then \
+	    $(call get_cs_cmdline,C) $(call get_cs_cmdline,CPP) $(CHK_SOURCES);\
+	else exit 1; fi
+
+.PHONY: check-syntax
diff --git a/imap/Makefile.am b/imap/Makefile.am
index e423c7ff..f18e0234 100644
--- a/imap/Makefile.am
+++ b/imap/Makefile.am
@@ -1,4 +1,5 @@
 ## Process this file with automake to produce Makefile.in
+include $(top_srcdir)/flymake.am
 
 AR=@AR@
 
-- 
2.40.0