compiler warnings:

do not warn for unknown pragmas
enable in libs/libpng/
enable in libs/teckit/
enable in libs/graphite/
in libs/freetype/: add -fno-strict-aliasing to CFLAGS
regenerate

git-svn-id: svn://tug.org/texlive/trunk@13833 c570f23f-e606-0410-a88d-b1316a301751

7 files changed, 75 insertions, 1 deletions

diff --git a/Build/source/libs/libpng/ChangeLog b/Build/source/libs/libpng/ChangeLog
index 02a805b6739..54db9853d4a 100644
--- a/Build/source/libs/libpng/ChangeLog
+++ b/Build/source/libs/libpng/ChangeLog
@@ -1,3 +1,9 @@
+2009-06-19  Peter Breitenlohner  <peb@mppmu.mpg.de>
+
+	* configure.ac: enable compiler warnings.
+	* Makefile.am (AM_CFLAGS): enable compiler warnings.
+	* libpng-1.2.37/png.c (png_64bit_product): declare as static.
+
 2009-06-04  Martin Schröder <martin@oneiros.de>
 
 	Import libpng-1.2.37.
diff --git a/Build/source/libs/libpng/Makefile.am b/Build/source/libs/libpng/Makefile.am
index 71d0c14c8af..6a249f92b5f 100644
--- a/Build/source/libs/libpng/Makefile.am
+++ b/Build/source/libs/libpng/Makefile.am
@@ -27,6 +27,7 @@ dist-hook:
 
 INCLUDES = -I$(top_srcdir)/$(LIBPNG_TREE) $(ZLIB_INCLUDES)
 AM_CPPFLAGS = $(LIBPNG_DEFINES)
+AM_CFLAGS = $(WARNING_CFLAGS)
 
 noinst_LIBRARIES=libpng.a
 
diff --git a/Build/source/libs/libpng/Makefile.in b/Build/source/libs/libpng/Makefile.in
index 23ae04a5dc5..cf94b428574 100644
--- a/Build/source/libs/libpng/Makefile.in
+++ b/Build/source/libs/libpng/Makefile.in
@@ -48,6 +48,7 @@ DIST_COMMON = README $(am__configure_deps) \
 	../../build-aux/texinfo.tex ../../build-aux/ylwrap ChangeLog
 ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
 am__aclocal_m4_deps = $(top_srcdir)/../../m4/kpse-common.m4 \
+	$(top_srcdir)/../../m4/kpse-warnings.m4 \
 	$(top_srcdir)/../../m4/kpse-zlib-flags.m4 \
 	$(top_srcdir)/configure.ac
 am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \
@@ -151,6 +152,7 @@ SET_MAKE = @SET_MAKE@
 SHELL = @SHELL@
 STRIP = @STRIP@
 VERSION = @VERSION@
+WARNING_CFLAGS = @WARNING_CFLAGS@
 ZLIB_DEPEND = @ZLIB_DEPEND@
 ZLIB_INCLUDES = @ZLIB_INCLUDES@
 ZLIB_LIBS = @ZLIB_LIBS@
@@ -200,6 +202,7 @@ ACLOCAL_AMFLAGS = -I ../../m4
 EXTRA_DIST = $(LIBPNG_TREE)
 INCLUDES = -I$(top_srcdir)/$(LIBPNG_TREE) $(ZLIB_INCLUDES)
 AM_CPPFLAGS = $(LIBPNG_DEFINES)
+AM_CFLAGS = $(WARNING_CFLAGS)
 noinst_LIBRARIES = libpng.a
 nodist_libpng_a_SOURCES = \
 	$(LIBPNG_TREE)/png.c \
diff --git a/Build/source/libs/libpng/aclocal.m4 b/Build/source/libs/libpng/aclocal.m4
index 9543c90a2a9..fcf3b484aeb 100644
--- a/Build/source/libs/libpng/aclocal.m4
+++ b/Build/source/libs/libpng/aclocal.m4
@@ -990,4 +990,5 @@ AC_SUBST([am__untar])
 ]) # _AM_PROG_TAR
 
 m4_include([../../m4/kpse-common.m4])
+m4_include([../../m4/kpse-warnings.m4])
 m4_include([../../m4/kpse-zlib-flags.m4])
diff --git a/Build/source/libs/libpng/configure b/Build/source/libs/libpng/configure
index 65a65f59edc..6378893daa1 100755
--- a/Build/source/libs/libpng/configure
+++ b/Build/source/libs/libpng/configure
@@ -653,6 +653,7 @@ POW_LIB
 EGREP
 GREP
 CPP
+WARNING_CFLAGS
 RANLIB
 am__fastdepCC_FALSE
 am__fastdepCC_TRUE
@@ -741,6 +742,7 @@ ac_user_opts='
 enable_option_checking
 enable_maintainer_mode
 enable_dependency_tracking
+enable_compiler_warnings
 with_system_zlib
 with_zlib_includes
 with_zlib_libdir
@@ -1385,6 +1387,9 @@ Optional Features:
 			  (and sometimes confusing) to the casual installer
   --disable-dependency-tracking  speeds up one-time build
   --enable-dependency-tracking   do not reject slow dependency extractors
+  --enable-compiler-warnings=[no|min|yes|max]
+                          Turn on compiler warnings [default: yes if
+                          maintainer-mode, min otherwise]
 
 Optional Packages:
   --with-PACKAGE[=ARG]    use PACKAGE [ARG=yes]
@@ -3623,6 +3628,62 @@ else
 fi
 
 
+# Check whether --enable-compiler-warnings was given.
+if test "${enable_compiler_warnings+set}" = set; then
+  enableval=$enable_compiler_warnings;
+fi
+case $enable_compiler_warnings in
+  no | min | yes | max) : ;;
+  *) if test "x$enable_maintainer_mode" = xyes; then
+  enable_compiler_warnings=yes
+else
+  enable_compiler_warnings=min
+fi
+ ;;
+esac
+
+
+{ $as_echo "$as_me:$LINENO: checking what warning flags to pass to the C compiler" >&5
+$as_echo_n "checking what warning flags to pass to the C compiler... " >&6; }
+if test "${kpse_cv_warning_cflags+set}" = set; then
+  $as_echo_n "(cached) " >&6
+else
+  if test "x$enable_compiler_warnings" = xno; then
+  kpse_cv_warning_cflags=
+elif test "x$GCC" = xyes; then
+  kpse_cv_warning_cflags="-Wall -Wunused"
+  case `$CC -dumpversion` in
+  3.4.* | 4.*) kpse_cv_warning_cflags="$kpse_cv_warning_cflags -Wdeclaration-after-statement" ;;
+esac
+
+  case `$CC -dumpversion` in
+  3.[234].* | 4.*) kpse_cv_warning_cflags="$kpse_cv_warning_cflags -Wno-unknown-pragmas" ;;
+esac
+
+  if test "x$enable_compiler_warnings" != xmin; then
+    kpse_cv_warning_cflags="$kpse_cv_warning_cflags -Wmissing-prototypes -Wmissing-declarations"
+    if test "x$enable_compiler_warnings" != xyes; then
+      kpse_cv_warning_cflags="$kpse_cv_warning_cflags -Wimplicit -Wparentheses -Wreturn-type"
+      kpse_cv_warning_cflags="$kpse_cv_warning_cflags -Wswitch -Wtrigraphs -Wshadow -Wpointer-arith"
+      kpse_cv_warning_cflags="$kpse_cv_warning_cflags -Wcast-qual -Wcast-align -Wwrite-strings"
+      case `$CC -dumpversion` in
+  3.4.* | 4.*) kpse_cv_warning_cflags="$kpse_cv_warning_cflags -Wold-style-definition" ;;
+esac
+
+    fi
+  fi
+else
+  : # FIXME: warning flags for non-gcc compilers
+fi
+fi
+{ $as_echo "$as_me:$LINENO: result: $kpse_cv_warning_cflags" >&5
+$as_echo "$kpse_cv_warning_cflags" >&6; }
+WARNING_CFLAGS=$kpse_cv_warning_cflags
+
+
+
+
+
 ac_config_headers="$ac_config_headers config.h"
 
 
diff --git a/Build/source/libs/libpng/configure.ac b/Build/source/libs/libpng/configure.ac
index 5b7171cb161..c0368b4a28d 100644
--- a/Build/source/libs/libpng/configure.ac
+++ b/Build/source/libs/libpng/configure.ac
@@ -29,6 +29,8 @@ AC_SUBST([PNGLIB_RELEASE])
 AC_PROG_CC
 AC_PROG_RANLIB
 
+KPSE_COMPILER_WARNINGS
+
 AC_CONFIG_HEADERS([config.h])
 
 # Checks for header files.
diff --git a/Build/source/libs/libpng/libpng-1.2.37/png.c b/Build/source/libs/libpng/libpng-1.2.37/png.c
index 62b86e1d026..9a0fef5a50d 100644
--- a/Build/source/libs/libpng/libpng-1.2.37/png.c
+++ b/Build/source/libs/libpng/libpng-1.2.37/png.c
@@ -825,7 +825,7 @@ png_convert_size(size_t size)
  *    A and D, and X || Y is (X << 16) + Y.
 */
 
-void png_64bit_product (long v1, long v2, unsigned long *hi_product,
+static void png_64bit_product (long v1, long v2, unsigned long *hi_product,
    unsigned long *lo_product)
 {
    int a, b, c, d;