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Diffstat (limited to 'Build/source/m4/kpse-warnings.m4')
-rw-r--r-- | Build/source/m4/kpse-warnings.m4 | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/Build/source/m4/kpse-warnings.m4 b/Build/source/m4/kpse-warnings.m4 new file mode 100644 index 00000000000..545bcb6d3af --- /dev/null +++ b/Build/source/m4/kpse-warnings.m4 @@ -0,0 +1,111 @@ +# Public macros for the TeX Live (TL) tree. +# Copyright (C) 2009 Peter Breitenlohner <tex-live@tug.org> +# +# This file is free software; the copyright holders +# give unlimited permission to copy and/or distribute it, +# with or without modifications, as long as this notice is preserved. + +# serial 0 + +# KPSE_COMPILER_WARNINGS +# ---------------------- +# Set up compiler warnings for C and C++. +# This macro determines and substitutes WARNING_CFLAGS for the C compiler +# and, if applicable, WARNING_CXXFLAGS for the C++ compiler. To activate +# them a Makefile.am must use them, e.g., in AM_CFLAGS or AM_CXXFLAGS. +AC_DEFUN([KPSE_COMPILER_WARNINGS], +[AC_REQUIRE([_KPSE_COMPILER_WARNINGS_OPTION])[]dnl +KPSE_WARNING_CFLAGS +dnl arrange that AC_PROG_CXX uses _KPSE_WARNING_CXXFLAGS. +AC_PROVIDE_IFELSE([AC_PROG_CXX], + [_KPSE_WARNING_CXXFLAGS], + [m4_define([AC_PROG_CXX], + m4_defn([AC_PROG_CXX])[_KPSE_WARNING_CXXFLAGS])]) +]) # KPSE_COMPILER_WARNINGS + +KPSE_WARNING_CFLAGS +# ----------------- +# Determine and substitute WARNING_CFLAGS for C compiler. +AC_DEFUN([KPSE_WARNING_CFLAGS], +[AC_REQUIRE([_KPSE_COMPILER_WARNINGS_OPTION])[]dnl +AC_REQUIRE([AC_PROG_CC])[]dnl +AC_CACHE_CHECK([what warning flags to pass to the C compiler], + [kpse_cv_warning_cflags], + [dnl +if test "x$enable_compiler_warnings" = xno; then + kpse_cv_warning_cflags= +elif test "x$GCC" = xyes; then + kpse_cv_warning_cflags="-Wall -Wunused" + if test "x$enable_compiler_warnings" != xmin; then + kpse_cv_warning_cflags="$kpse_cv_warning_cflags -Wmissing-prototypes -Wmissing-declarations" + AS_CASE([`$CC -dumpversion`], + [3.4.* | 4.*], + [kpse_cv_warning_cflags="$kpse_cv_warning_cflags -Wdeclaration-after-statement"]) + 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" + AS_CASE([`$CC -dumpversion`], + [3.4.* | 4.*], + [kpse_cv_warning_cflags="$kpse_cv_warning_cflags -Wold-style-definition"]) + fi + fi +else + : # FIXME: warning flags for non-gcc compilers +fi]) +WARNING_CFLAGS=$kpse_cv_warning_cflags +AC_SUBST([WARNING_CFLAGS]) +]) # KPSE_WARNING_CFLAGS + +# KPSE_WARNING_CXXFLAGS +# --------------------- +# Determine and substitute WARNING_CXXFLAGS for C++ compiler. +AC_DEFUN([KPSE_WARNING_CXXFLAGS], +[AC_REQUIRE([_KPSE_COMPILER_WARNINGS_OPTION])[]dnl +AC_REQUIRE([AC_PROG_CXX])[]dnl +_KPSE_WARNING_CXXFLAGS +]) # KPSE_WARNING_CXXFLAGS + +# _KPSE_COMPILER_WARNINGS_OPTION +# ------------------------------ +# Internal subroutine. +# Provide configure option `--enable-compiler-warnings=[no|min|yes|max]' +# to enable various degrees of compiler warnings. +AC_DEFUN([_KPSE_COMPILER_WARNINGS_OPTION], +[AC_ARG_ENABLE([compiler-warnings], + AS_HELP_STRING([--enable-compiler-warnings=@<:@no|min|yes|max@:>@], + [Turn on compiler warnings @<:@default: yes if maintainer-mode, + min otherwise@:>@]))[]dnl +AS_CASE([$enable_compiler_warnings], + [no | min | yes | max], [], + [AS_IF([test "x$enable_maintainer_mode" = xyes], + [enable_compiler_warnings=yes], + [enable_compiler_warnings=min])]) +]) # _KPSE_COMPILER_WARNINGS_OPTION + +# _KPSE_WARNING_CXXFLAGS +# ---------------------- +# Internal subroutine. +# Determine and substitute WARNING_CXXFLAGS for C++ compiler. +m4_define([_KPSE_WARNING_CXXFLAGS], +[AC_CACHE_CHECK([what warning flags to pass to the C++ compiler], + [kpse_cv_warning_cxxflags], + [dnl +if test "x$enable_compiler_warnings" = xno; then + kpse_cv_warning_cxxflags= +elif test "x$GXX" = xyes; then + kpse_cv_warning_cxxflags="-Wall -Wunused" + if test "x$enable_compiler_warnings" != xmin; then + if test "x$enable_compiler_warnings" != xyes; then + kpse_cv_warning_cxxflags="$kpse_cv_warning_cxxflags -Wimplicit -Wparentheses -Wreturn-type" + kpse_cv_warning_cxxflags="$kpse_cv_warning_cxxflags -Wswitch -Wtrigraphs -Wshadow -Wpointer-arith" + kpse_cv_warning_cxxflags="$kpse_cv_warning_cxxflags -Wcast-qual -Wcast-align -Wwrite-strings" + fi + fi +else + : # FIXME: warning flags for non-g++ compilers +fi]) +WARNING_CXXFLAGS=$kpse_cv_warning_cxxflags +AC_SUBST([WARNING_CXXFLAGS]) +]) # _KPSE_WARNING_CXXFLAGS + |