[poppler] configure.ac

[Albert Astals Cid]

 configure.ac |   18 ++++++++++++++++--
 1 file changed, 16 insertions(+), 2 deletions(-)

New commits:
commit 0c47b769a77795bd866b6686b79fd20ad6f554bf
Author: Daniel Macks <dmacks at netspace.org>
Date:   Sun Dec 14 18:52:48 2014 +0100

    Only consider adding -fno-check-new if compiler supports it
    
    Helps compiling on old clang's
    
    Bug #76963

diff --git a/configure.ac b/configure.ac
index 3bf36e0..54dacf1 100644
--- a/configure.ac
+++ b/configure.ac
@@ -810,18 +810,32 @@ else
 fi
 AC_SUBST(TESTDATADIR)
 
+# some compilers do not support this flag (see bug #76963)
+fno_check_new=
+AC_MSG_CHECKING([for -fno-check-new compiler flag])
+AC_LANG_PUSH([C++])
+saved_CXXFLAGS=$CXXFLAGS
+CXXFLAGS="-fno-check-new $CXXFLAGS"
+AC_TRY_COMPILE([], [],
+  [AC_MSG_RESULT([yes])
+  fno_check_new="-fno-check-new"],
+  AC_MSG_RESULT([no])
+)
+CXXFLAGS=$saved_CXXFLAGS
+AC_LANG_POP
+
 if test "x$GCC" != xyes; then
   enable_compile_warnings=no
 fi
 case "$enable_compile_warnings" in
   no)	;;
-  yes)	CXXFLAGS="-Wall -Woverloaded-virtual -Wnon-virtual-dtor -Wcast-align -fno-exceptions -fno-check-new -fno-common $CXXFLAGS";
+  yes)	CXXFLAGS="-Wall -Woverloaded-virtual -Wnon-virtual-dtor -Wcast-align -fno-exceptions $fno_check_new -fno-common $CXXFLAGS";
         CFLAGS="-Wall $CFLAGS" ;;
   kde)	CXXFLAGS="-Wnon-virtual-dtor -Wno-long-long -Wundef \
 		-D_XOPEN_SOURCE=600 -D_BSD_SOURCE -Wcast-align \
 		-Wconversion -Wall -W -Wpointer-arith \
 		-Wwrite-strings -O2 -Wformat-security \
-		-Wmissing-format-attribute -fno-exceptions -fno-check-new \
+		-Wmissing-format-attribute -fno-exceptions $fno_check_new \
 		-fno-common $CXXFLAGS" ;;
 esac