Source: re2c
Version: 1.2.1-1
Severity: wishlist
Tags: patch
User: reproducible-bui...@lists.alioth.debian.org
Usertags: timestamps
X-Debbugs-Cc: reproducible-b...@lists.alioth.debian.org
Hi,
Whilst working on the Reproducible Builds effort [0] we noticed
that re2c could not be built reproducibly. This is because it
used the current build date in the manual page.
Patch attached.
[0] https://reproducible-builds.org/
Regards,
--
,''`.
: :' : Chris Lamb
`. `'` la...@debian.org / chris-lamb.co.uk
`-
--- a/.pc/03_reproducible_build.diff/configure.ac 1969-12-31
16:00:00.000000000 -0800
--- b/.pc/03_reproducible_build.diff/configure.ac 2019-08-13
08:34:19.814927292 -0700
@@ -0,0 +1,140 @@
+AC_INIT([re2c],[1.2.1],[re2c-gene...@lists.sourceforge.net])
+AM_INIT_AUTOMAKE([foreign subdir-objects dist-xz no-dist-gzip])
+AM_SILENT_RULES([yes])
+
+
+AC_CONFIG_SRCDIR([src/main.cc])
+AC_CONFIG_HEADERS([config.h])
+
+
+AC_SUBST(PACKAGE_DATE, `date +'%d %b %Y'`)
+AC_SUBST(PACKAGE_VERSION)
+AC_SUBST(PACKAGE_NAME)
+AC_SUBST(PACKAGE_TARNAME)
+AC_SUBST(PACKAGE_RELEASE, ${PACKAGE_RELEASE:-1})
+
+
+# without this, --std=c++98 disables POSIX functions on Cygwin
+AC_USE_SYSTEM_EXTENSIONS
+
+
+# --enable-debug
+AC_ARG_ENABLE([debug], [AS_HELP_STRING([--enable-debug],
+ [enable checks and assertions])])
+AM_CONDITIONAL([DEBUG], [test "x$enable_debug" = "xyes"])
+
+
+# --enable-docs
+AC_ARG_ENABLE([docs], [AS_HELP_STRING([--enable-docs], [regenerate manpage])])
+AM_CONDITIONAL([REBUILD_DOCS], [test "x$enable_docs" = "xyes"])
+AM_COND_IF([REBUILD_DOCS], [
+ AC_CHECK_PROGS(RST2MAN, [rst2man rst2man.py], no)
+ AS_IF([test "x$RST2MAN" = "xno"], [
+ AC_MSG_ERROR([need rst2man or rst2man.py for --enable-docs])
+ ])
+])
+
+
+# --enable-libs
+AC_ARG_ENABLE([libs], [AS_HELP_STRING([--enable-libs], [build libraries])])
+AM_CONDITIONAL([WITH_LIBS], [test "x$enable_libs" = "xyes"])
+AM_COND_IF([WITH_LIBS], [
+ AC_SUBST(LDFLAGS_RE2, [])
+ AC_LANG_PUSH([C++])
+ AC_CHECK_HEADERS([re2/re2.h], [AS_VAR_SET([LDFLAGS_RE2], ["-lre2"])], [],
[[]])
+ AC_LANG_POP([C++])
+])
+
+
+# checks for programs
+AC_PATH_PROG(BISON, bison, no)
+AC_PROG_CC # used in skeleton tests
+AC_PROG_CXX
+AC_PROG_INSTALL
+
+
+# checks for C++ compiler flags
+AC_SUBST(CXXFLAGSDEFAULT, [])
+# TRY_CXXFLAG (flag [implied-flags])
+# Iff C++ compiler recognizes 'flag', append 'flag' and 'implied-flags' to
CXXFLAGSDEFAULT
+# (Second param 'implied-flags' is needed for warning suppressions
'-Wno-<warning>':
+# GCC warns about unrecognized suppressions options only in presence of other
warnings,
+# which makes it hard to test for them with autoconf.)
+AC_DEFUN([TRY_CXXFLAG], [
+ AC_MSG_CHECKING([C++ compiler flag $1])
+ AS_VAR_SET([CXXFLAGS_BACKUP], ["$CXXFLAGS"])
+ AS_VAR_SET([CXXFLAGS], ["$CXXFLAGS $1"])
+ AC_LANG_PUSH([C++])
+ AC_COMPILE_IFELSE(
+ [AC_LANG_PROGRAM()],
+ [
+ AS_VAR_SET([TRY_CXXFLAG_RESULT], [yes])
+ AS_VAR_SET([CXXFLAGSDEFAULT], ["$CXXFLAGSDEFAULT $1 $2"])
+ ],
+ [AS_VAR_SET([TRY_CXXFLAG_RESULT], [no])]
+ )
+ AC_LANG_POP([C++])
+ AS_VAR_SET([CXXFLAGS], ["$CXXFLAGS_BACKUP"])
+ AC_MSG_RESULT([$TRY_CXXFLAG_RESULT])
+])
+TRY_CXXFLAG([-std=c++98])
+TRY_CXXFLAG([-W])
+TRY_CXXFLAG([-Wall])
+TRY_CXXFLAG([-Wextra])
+TRY_CXXFLAG([-Weffc++])
+TRY_CXXFLAG([-pedantic])
+TRY_CXXFLAG([-Wformat=2])
+TRY_CXXFLAG([-Wredundant-decls])
+TRY_CXXFLAG([-Wsuggest-attribute=format])
+TRY_CXXFLAG([-Wconversion])
+TRY_CXXFLAG([-Wsign-conversion])
+TRY_CXXFLAG([-Werror=return-type])
+TRY_CXXFLAG([-O2])
+TRY_CXXFLAG([-Weverything], m4_join([ ],
+ [-Wno-unknown-warning-option], dnl CLANG eats some GCC options only to
warn they are unknown
+ [-Wno-reserved-id-macro], dnl to allow header guards of the form
'_RE2C_PATH_TO_HEADER_BASENAME_'
+ [-Wno-padded],
+ [-Wno-old-style-cast], dnl RE2C-generated lexer has lots of C-syle casts
because of 're2c:yych:conversion = 1;'
+ [-Wno-nested-anon-types],
+ [-Wno-global-constructors] dnl initialization of global constants with
std::numeric_limits<...> (mostly for size_t)
+ [-Wno-shadow-field-in-constructor] dnl using same names in ctor seems more
like a feature
+ [-Wno-undefined-func-template])) dnl explicit specialization to reduce
build dependencies
+
+
+# needed by src/c99_stdint.h
+# avoid AC_INCLUDES_DEFAULT
+AC_CHECK_HEADERS([stdint.h], [], [], [[]])
+# needed for POSIX file API
+AC_CHECK_HEADERS([sys/types.h], [], [], [[]])
+AC_CHECK_HEADERS([sys/stat.h], [], [], [[]])
+AC_CHECK_HEADERS([fcntl.h], [], [], [[]])
+AC_CHECK_HEADERS([unistd.h], [], [], [[]])
+AC_CHECK_HEADERS([io.h], [], [], [[]]) # windows POSIX-like API
+# list of possible types to use in typedefs
+AC_CHECK_SIZEOF([char], [], [[]])
+AC_CHECK_SIZEOF([short], [], [[]])
+AC_CHECK_SIZEOF([int], [], [[]])
+AC_CHECK_SIZEOF([long], [], [[]])
+AC_CHECK_SIZEOF([long long], [], [[]])
+AC_CHECK_SIZEOF([__int64], [], [[]])
+# size of pointers
+AC_CHECK_SIZEOF([void *], [], [[]])
+# 64-bit integer constant suffix
+AC_CHECK_SIZEOF([0l], [], [[]])
+AC_CHECK_SIZEOF([0ll], [], [[]])
+AC_CHECK_SIZEOF([0i8], [], [[]])
+
+
+AC_CONFIG_FILES([\
+ Makefile \
+ doc/manpage.rst \
+ doc/help.rst \
+])
+AC_CONFIG_FILES([run_tests.sh], [chmod +x run_tests.sh])
+
+
+LT_INIT([dlopen win32-dll])
+AC_CONFIG_MACRO_DIRS([m4])
+
+
+AC_OUTPUT
--- a/.pc/applied-patches 2019-08-13 08:14:58.244624533 -0700
--- b/.pc/applied-patches 2019-08-13 08:34:19.810927050 -0700
@@ -1 +1,2 @@
02_fix_manpage_typos.diff
+03_reproducible_build.diff
--- a/configure.ac 2019-08-13 08:14:58.124622486 -0700
--- b/configure.ac 2019-08-13 08:37:45.469332719 -0700
@@ -6,8 +6,12 @@
AC_CONFIG_SRCDIR([src/main.cc])
AC_CONFIG_HEADERS([config.h])
-
-AC_SUBST(PACKAGE_DATE, `date +'%d %b %Y'`)
+if test -n "$SOURCE_DATE_EPOCH"; then
+ PACKAGE_DATE=`LC_ALL=C date --utc --date="@$SOURCE_DATE_EPOCH" +'%b %d
%Y'`
+else
+ PACKAGE_DATE=`date +'%d %b %Y'`
+fi
+AC_SUBST(PACKAGE_DATE, $PACKAGE_DATE)
AC_SUBST(PACKAGE_VERSION)
AC_SUBST(PACKAGE_NAME)
AC_SUBST(PACKAGE_TARNAME)
--- a/debian/patches/03_reproducible_build.diff 1969-12-31 16:00:00.000000000
-0800
--- b/debian/patches/03_reproducible_build.diff 2019-08-13 08:37:52.237612506
-0700
@@ -0,0 +1,21 @@
+Description: Make the build reproducible
+Author: Chris Lamb <la...@debian.org>
+Last-Update: 2019-08-13
+
+--- re2c-1.2.1.orig/configure.ac
++++ re2c-1.2.1/configure.ac
+@@ -6,8 +6,12 @@ AM_SILENT_RULES([yes])
+ AC_CONFIG_SRCDIR([src/main.cc])
+ AC_CONFIG_HEADERS([config.h])
+
+-
+-AC_SUBST(PACKAGE_DATE, `date +'%d %b %Y'`)
++if test -n "$SOURCE_DATE_EPOCH"; then
++ PACKAGE_DATE=`LC_ALL=C date --utc --date="@$SOURCE_DATE_EPOCH" +'%b %d
%Y'`
++else
++ PACKAGE_DATE=`date +'%d %b %Y'`
++fi
++AC_SUBST(PACKAGE_DATE, $PACKAGE_DATE)
+ AC_SUBST(PACKAGE_VERSION)
+ AC_SUBST(PACKAGE_NAME)
+ AC_SUBST(PACKAGE_TARNAME)
--- a/debian/patches/series 2019-08-13 08:14:58.128622554 -0700
--- b/debian/patches/series 2019-08-13 08:33:26.624987469 -0700
@@ -1 +1,2 @@
02_fix_manpage_typos.diff
+03_reproducible_build.diff
