gnu: gcc@5: Respect SOURCE_DATE_EPOCH in __DATE__ and __TIME__ macros.
* gnu/packages/patches/gcc-5-source-date-epoch-1.patch, gnu/packages/patches/gcc-5-source-date-epoch-2.patch: New files. * gnu/local.mk (dist_patch_DATA): Register them. * gnu/packages/gcc.scm (gcc-5)[source]: Use them.
This commit is contained in:
parent
0e88ada940
commit
d71d6fe85c
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@ -561,6 +561,8 @@ dist_patch_DATA = \
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%D%/packages/patches/gcc-strmov-store-file-names.patch \
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%D%/packages/patches/gcc-strmov-store-file-names.patch \
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%D%/packages/patches/gcc-4.9.3-mingw-gthr-default.patch \
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%D%/packages/patches/gcc-4.9.3-mingw-gthr-default.patch \
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%D%/packages/patches/gcc-5.0-libvtv-runpath.patch \
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%D%/packages/patches/gcc-5.0-libvtv-runpath.patch \
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%D%/packages/patches/gcc-5-source-date-epoch-1.patch \
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%D%/packages/patches/gcc-5-source-date-epoch-2.patch \
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%D%/packages/patches/gcc-6-arm-none-eabi-multilib.patch \
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%D%/packages/patches/gcc-6-arm-none-eabi-multilib.patch \
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%D%/packages/patches/gcc-6-cross-environment-variables.patch \
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%D%/packages/patches/gcc-6-cross-environment-variables.patch \
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%D%/packages/patches/gcj-arm-mode.patch \
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%D%/packages/patches/gcj-arm-mode.patch \
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@ -376,7 +376,9 @@ Go. It also includes runtime support libraries for these languages.")
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"0fihlcy5hnksdxk0sn6bvgnyq8gfrgs8m794b1jxwd1dxinzg3b0"))
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"0fihlcy5hnksdxk0sn6bvgnyq8gfrgs8m794b1jxwd1dxinzg3b0"))
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(patches (search-patches "gcc-arm-bug-71399.patch"
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(patches (search-patches "gcc-arm-bug-71399.patch"
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"gcc-strmov-store-file-names.patch"
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"gcc-strmov-store-file-names.patch"
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"gcc-5.0-libvtv-runpath.patch"))))))
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"gcc-5.0-libvtv-runpath.patch"
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"gcc-5-source-date-epoch-1.patch"
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"gcc-5-source-date-epoch-2.patch"))))))
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(define-public gcc-6
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(define-public gcc-6
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(package
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(package
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@ -0,0 +1,190 @@
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Make GCC respect SOURCE_DATE_EPOCH in __DATE__ and __TIME__ macros.
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Patch adapted from upstream source repository:
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https://gcc.gnu.org/git/?p=gcc.git;a=commitdiff;h=e3e8c48c4a494d9da741c1c8ea6c4c0b7c4ff934
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From e3e8c48c4a494d9da741c1c8ea6c4c0b7c4ff934 Mon Sep 17 00:00:00 2001
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From: doko <doko@138bc75d-0d04-0410-961f-82ee72b054a4>
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Date: Thu, 28 Apr 2016 09:12:05 +0000
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Subject: [PATCH] gcc/c-family/ChangeLog:
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diff --git a/gcc/c-family/c-common.c b/gcc/c-family/c-common.c
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index 1bf5d080034..6f0898a38d7 100644
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--- a/gcc/c-family/c-common.c
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+++ b/gcc/c-family/c-common.c
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@@ -12318,4 +12318,37 @@ pointer_to_zero_sized_aggr_p (tree t)
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return (TYPE_SIZE (t) && integer_zerop (TYPE_SIZE (t)));
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}
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+/* Read SOURCE_DATE_EPOCH from environment to have a deterministic
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+ timestamp to replace embedded current dates to get reproducible
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+ results. Returns -1 if SOURCE_DATE_EPOCH is not defined. */
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+time_t
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+get_source_date_epoch ()
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+{
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+ char *source_date_epoch;
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+ long long epoch;
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+ char *endptr;
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+
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+ source_date_epoch = getenv ("SOURCE_DATE_EPOCH");
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+ if (!source_date_epoch)
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+ return (time_t) -1;
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+
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+ errno = 0;
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+ epoch = strtoll (source_date_epoch, &endptr, 10);
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+ if ((errno == ERANGE && (epoch == LLONG_MAX || epoch == LLONG_MIN))
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+ || (errno != 0 && epoch == 0))
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+ fatal_error (UNKNOWN_LOCATION, "environment variable $SOURCE_DATE_EPOCH: "
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+ "strtoll: %s\n", xstrerror(errno));
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+ if (endptr == source_date_epoch)
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+ fatal_error (UNKNOWN_LOCATION, "environment variable $SOURCE_DATE_EPOCH: "
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+ "no digits were found: %s\n", endptr);
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+ if (*endptr != '\0')
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+ fatal_error (UNKNOWN_LOCATION, "environment variable $SOURCE_DATE_EPOCH: "
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+ "trailing garbage: %s\n", endptr);
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+ if (epoch < 0)
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+ fatal_error (UNKNOWN_LOCATION, "environment variable $SOURCE_DATE_EPOCH: "
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+ "value must be nonnegative: %lld \n", epoch);
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+
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+ return (time_t) epoch;
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+}
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+
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#include "gt-c-family-c-common.h"
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diff --git a/gcc/c-family/c-common.h b/gcc/c-family/c-common.h
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index fdb227f85c3..ba0a5d7df50 100644
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--- a/gcc/c-family/c-common.h
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+++ b/gcc/c-family/c-common.h
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@@ -1437,4 +1437,10 @@ extern bool contains_cilk_spawn_stmt (tree);
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extern tree cilk_for_number_of_iterations (tree);
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extern bool check_no_cilk (tree, const char *, const char *,
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location_t loc = UNKNOWN_LOCATION);
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+
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+/* Read SOURCE_DATE_EPOCH from environment to have a deterministic
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+ timestamp to replace embedded current dates to get reproducible
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+ results. Returns -1 if SOURCE_DATE_EPOCH is not defined. */
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+extern time_t get_source_date_epoch (void);
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+
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#endif /* ! GCC_C_COMMON_H */
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diff --git a/gcc/c-family/c-lex.c b/gcc/c-family/c-lex.c
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index bb55be8063e..e68471b9d2b 100644
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--- a/gcc/c-family/c-lex.c
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+++ b/gcc/c-family/c-lex.c
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@@ -402,6 +402,9 @@ c_lex_with_flags (tree *value, location_t *loc, unsigned char *cpp_flags,
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enum cpp_ttype type;
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unsigned char add_flags = 0;
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enum overflow_type overflow = OT_NONE;
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+ time_t source_date_epoch = get_source_date_epoch ();
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+
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+ cpp_init_source_date_epoch (parse_in, source_date_epoch);
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timevar_push (TV_CPP);
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retry:
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diff --git a/gcc/doc/cppenv.texi b/gcc/doc/cppenv.texi
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index 100811dc637..3b5317beb53 100644
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--- a/gcc/doc/cppenv.texi
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+++ b/gcc/doc/cppenv.texi
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@@ -79,4 +79,21 @@ main input file is omitted.
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@ifclear cppmanual
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@xref{Preprocessor Options}.
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@end ifclear
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+
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+@item SOURCE_DATE_EPOCH
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+
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+If this variable is set, its value specifies a UNIX timestamp to be
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+used in replacement of the current date and time in the @code{__DATE__}
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+and @code{__TIME__} macros, so that the embedded timestamps become
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+reproducible.
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+
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+The value of @env{SOURCE_DATE_EPOCH} must be a UNIX timestamp,
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+defined as the number of seconds (excluding leap seconds) since
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+01 Jan 1970 00:00:00 represented in ASCII, identical to the output of
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+@samp{@command{date +%s}}.
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+
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+The value should be a known timestamp such as the last modification
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+time of the source or package and it should be set by the build
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+process.
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+
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@end vtable
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diff --git a/libcpp/include/cpplib.h b/libcpp/include/cpplib.h
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index 1b731d1a3ad..7a5481219be 100644
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--- a/libcpp/include/cpplib.h
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+++ b/libcpp/include/cpplib.h
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@@ -775,6 +775,9 @@ extern void cpp_init_special_builtins (cpp_reader *);
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/* Set up built-ins like __FILE__. */
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extern void cpp_init_builtins (cpp_reader *, int);
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+/* Initialize the source_date_epoch value. */
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+extern void cpp_init_source_date_epoch (cpp_reader *, time_t);
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+
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/* This is called after options have been parsed, and partially
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processed. */
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extern void cpp_post_options (cpp_reader *);
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diff --git a/libcpp/init.c b/libcpp/init.c
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index 45a4d13ffa3..a8d00f4628b 100644
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--- a/libcpp/init.c
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+++ b/libcpp/init.c
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@@ -530,6 +530,13 @@ cpp_init_builtins (cpp_reader *pfile, int hosted)
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_cpp_define_builtin (pfile, "__OBJC__ 1");
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}
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+/* Initialize the source_date_epoch value. */
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+void
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+cpp_init_source_date_epoch (cpp_reader *pfile, time_t source_date_epoch)
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+{
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+ pfile->source_date_epoch = source_date_epoch;
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+}
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+
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/* Sanity-checks are dependent on command-line options, so it is
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called as a subroutine of cpp_read_main_file (). */
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#if ENABLE_CHECKING
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diff --git a/libcpp/internal.h b/libcpp/internal.h
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index c2d08168945..8507eba1747 100644
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--- a/libcpp/internal.h
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+++ b/libcpp/internal.h
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@@ -502,6 +502,10 @@ struct cpp_reader
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const unsigned char *date;
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const unsigned char *time;
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+ /* Externally set timestamp to replace current date and time useful for
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+ reproducibility. */
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+ time_t source_date_epoch;
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+
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/* EOF token, and a token forcing paste avoidance. */
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cpp_token avoid_paste;
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cpp_token eof;
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diff --git a/libcpp/macro.c b/libcpp/macro.c
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index eb32a6f8c98..3f3b278e97d 100644
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--- a/libcpp/macro.c
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+++ b/libcpp/macro.c
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@@ -350,13 +350,20 @@ _cpp_builtin_macro_text (cpp_reader *pfile, cpp_hashnode *node)
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time_t tt;
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struct tm *tb = NULL;
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|
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- /* (time_t) -1 is a legitimate value for "number of seconds
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- since the Epoch", so we have to do a little dance to
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- distinguish that from a genuine error. */
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- errno = 0;
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- tt = time(NULL);
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- if (tt != (time_t)-1 || errno == 0)
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- tb = localtime (&tt);
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+ /* Set a reproducible timestamp for __DATE__ and __TIME__ macro
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+ usage if SOURCE_DATE_EPOCH is defined. */
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+ if (pfile->source_date_epoch != (time_t) -1)
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+ tb = gmtime (&pfile->source_date_epoch);
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+ else
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+ {
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+ /* (time_t) -1 is a legitimate value for "number of seconds
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|
+ since the Epoch", so we have to do a little dance to
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+ distinguish that from a genuine error. */
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+ errno = 0;
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+ tt = time (NULL);
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+ if (tt != (time_t)-1 || errno == 0)
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|
+ tb = localtime (&tt);
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|
+ }
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|
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|
if (tb)
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{
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--
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2.11.0
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@ -0,0 +1,353 @@
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Continuation of the SOURCE_DATE_EPOCH patch.
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Patch adapted from upstream source repository:
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|
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https://gcc.gnu.org/git/?p=gcc.git;a=commitdiff;h=dfa5c0d3f3e23e4fdb14857a42de376d9ff8601c
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From dfa5c0d3f3e23e4fdb14857a42de376d9ff8601c Mon Sep 17 00:00:00 2001
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|
From: doko <doko@138bc75d-0d04-0410-961f-82ee72b054a4>
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Date: Wed, 1 Jun 2016 16:42:41 +0000
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Subject: [PATCH] gcc/c-family/ChangeLog:
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diff --git a/gcc/c-family/c-common.c b/gcc/c-family/c-common.c
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index 6f0898a38d7..efbc78ef218 100644
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--- a/gcc/c-family/c-common.c
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|
+++ b/gcc/c-family/c-common.c
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|
@@ -12321,8 +12321,9 @@ pointer_to_zero_sized_aggr_p (tree t)
|
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|
/* Read SOURCE_DATE_EPOCH from environment to have a deterministic
|
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|
timestamp to replace embedded current dates to get reproducible
|
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|
results. Returns -1 if SOURCE_DATE_EPOCH is not defined. */
|
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|
+
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|
time_t
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-get_source_date_epoch ()
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|
+cb_get_source_date_epoch (cpp_reader *pfile ATTRIBUTE_UNUSED)
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|
{
|
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|
char *source_date_epoch;
|
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|
long long epoch;
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|
@@ -12334,19 +12335,14 @@ get_source_date_epoch ()
|
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|
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|
errno = 0;
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|
epoch = strtoll (source_date_epoch, &endptr, 10);
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|
- if ((errno == ERANGE && (epoch == LLONG_MAX || epoch == LLONG_MIN))
|
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|
- || (errno != 0 && epoch == 0))
|
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|
- fatal_error (UNKNOWN_LOCATION, "environment variable $SOURCE_DATE_EPOCH: "
|
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|
- "strtoll: %s\n", xstrerror(errno));
|
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|
- if (endptr == source_date_epoch)
|
||||||
|
- fatal_error (UNKNOWN_LOCATION, "environment variable $SOURCE_DATE_EPOCH: "
|
||||||
|
- "no digits were found: %s\n", endptr);
|
||||||
|
- if (*endptr != '\0')
|
||||||
|
- fatal_error (UNKNOWN_LOCATION, "environment variable $SOURCE_DATE_EPOCH: "
|
||||||
|
- "trailing garbage: %s\n", endptr);
|
||||||
|
- if (epoch < 0)
|
||||||
|
- fatal_error (UNKNOWN_LOCATION, "environment variable $SOURCE_DATE_EPOCH: "
|
||||||
|
- "value must be nonnegative: %lld \n", epoch);
|
||||||
|
+ if (errno != 0 || endptr == source_date_epoch || *endptr != '\0'
|
||||||
|
+ || epoch < 0 || epoch > MAX_SOURCE_DATE_EPOCH)
|
||||||
|
+ {
|
||||||
|
+ error_at (input_location, "environment variable SOURCE_DATE_EPOCH must "
|
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|
+ "expand to a non-negative integer less than or equal to %wd",
|
||||||
|
+ MAX_SOURCE_DATE_EPOCH);
|
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|
+ return (time_t) -1;
|
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|
+ }
|
||||||
|
|
||||||
|
return (time_t) epoch;
|
||||||
|
}
|
||||||
|
diff --git a/gcc/c-family/c-common.h b/gcc/c-family/c-common.h
|
||||||
|
index ba0a5d7df50..977ae9df5ea 100644
|
||||||
|
--- a/gcc/c-family/c-common.h
|
||||||
|
+++ b/gcc/c-family/c-common.h
|
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|
@@ -1063,6 +1063,16 @@ extern vec<tree, va_gc> *make_tree_vector_copy (const vec<tree, va_gc> *);
|
||||||
|
c_register_builtin_type. */
|
||||||
|
extern GTY(()) tree registered_builtin_types;
|
||||||
|
|
||||||
|
+/* Read SOURCE_DATE_EPOCH from environment to have a deterministic
|
||||||
|
+ timestamp to replace embedded current dates to get reproducible
|
||||||
|
+ results. Returns -1 if SOURCE_DATE_EPOCH is not defined. */
|
||||||
|
+extern time_t cb_get_source_date_epoch (cpp_reader *pfile);
|
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|
+
|
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|
+/* The value (as a unix timestamp) corresponds to date
|
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|
+ "Dec 31 9999 23:59:59 UTC", which is the latest date that __DATE__ and
|
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|
+ __TIME__ can store. */
|
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|
+#define MAX_SOURCE_DATE_EPOCH HOST_WIDE_INT_C (253402300799)
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|
+
|
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|
/* In c-gimplify.c */
|
||||||
|
extern void c_genericize (tree);
|
||||||
|
extern int c_gimplify_expr (tree *, gimple_seq *, gimple_seq *);
|
||||||
|
@@ -1438,9 +1448,4 @@ extern tree cilk_for_number_of_iterations (tree);
|
||||||
|
extern bool check_no_cilk (tree, const char *, const char *,
|
||||||
|
location_t loc = UNKNOWN_LOCATION);
|
||||||
|
|
||||||
|
-/* Read SOURCE_DATE_EPOCH from environment to have a deterministic
|
||||||
|
- timestamp to replace embedded current dates to get reproducible
|
||||||
|
- results. Returns -1 if SOURCE_DATE_EPOCH is not defined. */
|
||||||
|
-extern time_t get_source_date_epoch (void);
|
||||||
|
-
|
||||||
|
#endif /* ! GCC_C_COMMON_H */
|
||||||
|
diff --git a/gcc/c-family/c-lex.c b/gcc/c-family/c-lex.c
|
||||||
|
index e68471b9d2b..3f78073f640 100644
|
||||||
|
--- a/gcc/c-family/c-lex.c
|
||||||
|
+++ b/gcc/c-family/c-lex.c
|
||||||
|
@@ -97,6 +97,7 @@ init_c_lex (void)
|
||||||
|
cb->valid_pch = c_common_valid_pch;
|
||||||
|
cb->read_pch = c_common_read_pch;
|
||||||
|
cb->has_attribute = c_common_has_attribute;
|
||||||
|
+ cb->get_source_date_epoch = cb_get_source_date_epoch;
|
||||||
|
|
||||||
|
/* Set the debug callbacks if we can use them. */
|
||||||
|
if ((debug_info_level == DINFO_LEVEL_VERBOSE
|
||||||
|
@@ -402,9 +403,6 @@ c_lex_with_flags (tree *value, location_t *loc, unsigned char *cpp_flags,
|
||||||
|
enum cpp_ttype type;
|
||||||
|
unsigned char add_flags = 0;
|
||||||
|
enum overflow_type overflow = OT_NONE;
|
||||||
|
- time_t source_date_epoch = get_source_date_epoch ();
|
||||||
|
-
|
||||||
|
- cpp_init_source_date_epoch (parse_in, source_date_epoch);
|
||||||
|
|
||||||
|
timevar_push (TV_CPP);
|
||||||
|
retry:
|
||||||
|
diff --git a/gcc/doc/cppenv.texi b/gcc/doc/cppenv.texi
|
||||||
|
index 3b5317beb53..7b4cf6adc11 100644
|
||||||
|
--- a/gcc/doc/cppenv.texi
|
||||||
|
+++ b/gcc/doc/cppenv.texi
|
||||||
|
@@ -81,7 +81,6 @@ main input file is omitted.
|
||||||
|
@end ifclear
|
||||||
|
|
||||||
|
@item SOURCE_DATE_EPOCH
|
||||||
|
-
|
||||||
|
If this variable is set, its value specifies a UNIX timestamp to be
|
||||||
|
used in replacement of the current date and time in the @code{__DATE__}
|
||||||
|
and @code{__TIME__} macros, so that the embedded timestamps become
|
||||||
|
@@ -89,8 +88,9 @@ reproducible.
|
||||||
|
|
||||||
|
The value of @env{SOURCE_DATE_EPOCH} must be a UNIX timestamp,
|
||||||
|
defined as the number of seconds (excluding leap seconds) since
|
||||||
|
-01 Jan 1970 00:00:00 represented in ASCII, identical to the output of
|
||||||
|
-@samp{@command{date +%s}}.
|
||||||
|
+01 Jan 1970 00:00:00 represented in ASCII; identical to the output of
|
||||||
|
+@samp{@command{date +%s}} on GNU/Linux and other systems that support the
|
||||||
|
+@code{%s} extension in the @code{date} command.
|
||||||
|
|
||||||
|
The value should be a known timestamp such as the last modification
|
||||||
|
time of the source or package and it should be set by the build
|
||||||
|
diff --git a/gcc/gcc.c b/gcc/gcc.c
|
||||||
|
index d956c36b151..2709f295734 100644
|
||||||
|
--- a/gcc/gcc.c
|
||||||
|
+++ b/gcc/gcc.c
|
||||||
|
@@ -3328,6 +3328,29 @@ save_switch (const char *opt, size_t n_args, const char *const *args,
|
||||||
|
n_switches++;
|
||||||
|
}
|
||||||
|
|
||||||
|
+/* Set the SOURCE_DATE_EPOCH environment variable to the current time if it is
|
||||||
|
+ not set already. */
|
||||||
|
+
|
||||||
|
+static void
|
||||||
|
+set_source_date_epoch_envvar ()
|
||||||
|
+{
|
||||||
|
+ /* Array size is 21 = ceil(log_10(2^64)) + 1 to hold string representations
|
||||||
|
+ of 64 bit integers. */
|
||||||
|
+ char source_date_epoch[21];
|
||||||
|
+ time_t tt;
|
||||||
|
+
|
||||||
|
+ errno = 0;
|
||||||
|
+ tt = time (NULL);
|
||||||
|
+ if (tt < (time_t) 0 || errno != 0)
|
||||||
|
+ tt = (time_t) 0;
|
||||||
|
+
|
||||||
|
+ snprintf (source_date_epoch, 21, "%llu", (unsigned long long) tt);
|
||||||
|
+ /* Using setenv instead of xputenv because we want the variable to remain
|
||||||
|
+ after finalizing so that it's still set in the second run when using
|
||||||
|
+ -fcompare-debug. */
|
||||||
|
+ setenv ("SOURCE_DATE_EPOCH", source_date_epoch, 0);
|
||||||
|
+}
|
||||||
|
+
|
||||||
|
/* Handle an option DECODED that is unknown to the option-processing
|
||||||
|
machinery. */
|
||||||
|
|
||||||
|
@@ -3628,6 +3651,7 @@ driver_handle_option (struct gcc_options *opts,
|
||||||
|
else
|
||||||
|
compare_debug_opt = arg;
|
||||||
|
save_switch (compare_debug_replacement_opt, 0, NULL, validated, true);
|
||||||
|
+ set_source_date_epoch_envvar ();
|
||||||
|
return true;
|
||||||
|
|
||||||
|
case OPT_fdiagnostics_color_:
|
||||||
|
diff --git a/gcc/testsuite/gcc.dg/cpp/source_date_epoch-1.c b/gcc/testsuite/gcc.dg/cpp/source_date_epoch-1.c
|
||||||
|
new file mode 100644
|
||||||
|
index 00000000000..f6aa1a360ff
|
||||||
|
--- /dev/null
|
||||||
|
+++ b/gcc/testsuite/gcc.dg/cpp/source_date_epoch-1.c
|
||||||
|
@@ -0,0 +1,11 @@
|
||||||
|
+/* { dg-do run } */
|
||||||
|
+/* { dg-set-compiler-env-var SOURCE_DATE_EPOCH "630333296" } */
|
||||||
|
+
|
||||||
|
+int
|
||||||
|
+main(void)
|
||||||
|
+{
|
||||||
|
+ __builtin_printf ("%s %s\n", __DATE__, __TIME__);
|
||||||
|
+ return 0;
|
||||||
|
+}
|
||||||
|
+
|
||||||
|
+/* { dg-output "^Dec 22 1989 12:34:56\n$" } */
|
||||||
|
diff --git a/gcc/testsuite/gcc.dg/cpp/source_date_epoch-2.c b/gcc/testsuite/gcc.dg/cpp/source_date_epoch-2.c
|
||||||
|
new file mode 100644
|
||||||
|
index 00000000000..ae18362ae87
|
||||||
|
--- /dev/null
|
||||||
|
+++ b/gcc/testsuite/gcc.dg/cpp/source_date_epoch-2.c
|
||||||
|
@@ -0,0 +1,12 @@
|
||||||
|
+/* { dg-do compile } */
|
||||||
|
+/* { dg-set-compiler-env-var SOURCE_DATE_EPOCH "AAA" } */
|
||||||
|
+
|
||||||
|
+/* Make sure that SOURCE_DATE_EPOCH is only parsed once */
|
||||||
|
+
|
||||||
|
+int
|
||||||
|
+main(void)
|
||||||
|
+{
|
||||||
|
+ __builtin_printf ("%s %s\n", __DATE__, __TIME__); /* { dg-error "SOURCE_DATE_EPOCH must expand" } */
|
||||||
|
+ __builtin_printf ("%s %s\n", __DATE__, __TIME__);
|
||||||
|
+ return 0;
|
||||||
|
+}
|
||||||
|
diff --git a/gcc/testsuite/lib/gcc-dg.exp b/gcc/testsuite/lib/gcc-dg.exp
|
||||||
|
index 4fa433d9954..7656b2254a1 100644
|
||||||
|
--- a/gcc/testsuite/lib/gcc-dg.exp
|
||||||
|
+++ b/gcc/testsuite/lib/gcc-dg.exp
|
||||||
|
@@ -324,6 +324,38 @@ proc restore-target-env-var { } {
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
+proc dg-set-compiler-env-var { args } {
|
||||||
|
+ global set_compiler_env_var
|
||||||
|
+ global saved_compiler_env_var
|
||||||
|
+ if { [llength $args] != 3 } {
|
||||||
|
+ error "dg-set-compiler-env-var: need two arguments"
|
||||||
|
+ return
|
||||||
|
+ }
|
||||||
|
+ set var [lindex $args 1]
|
||||||
|
+ set value [lindex $args 2]
|
||||||
|
+ if [info exists ::env($var)] {
|
||||||
|
+ lappend saved_compiler_env_var [list $var 1 $::env($var)]
|
||||||
|
+ } else {
|
||||||
|
+ lappend saved_compiler_env_var [list $var 0]
|
||||||
|
+ }
|
||||||
|
+ setenv $var $value
|
||||||
|
+ lappend set_compiler_env_var [list $var $value]
|
||||||
|
+}
|
||||||
|
+
|
||||||
|
+proc restore-compiler-env-var { } {
|
||||||
|
+ global saved_compiler_env_var
|
||||||
|
+ for { set env_vari [llength $saved_compiler_env_var] } {
|
||||||
|
+ [incr env_vari -1] >= 0 } {} {
|
||||||
|
+ set env_var [lindex $saved_compiler_env_var $env_vari]
|
||||||
|
+ set var [lindex $env_var 0]
|
||||||
|
+ if [lindex $env_var 1] {
|
||||||
|
+ setenv $var [lindex $env_var 2]
|
||||||
|
+ } else {
|
||||||
|
+ unsetenv $var
|
||||||
|
+ }
|
||||||
|
+ }
|
||||||
|
+}
|
||||||
|
+
|
||||||
|
# Utility routines.
|
||||||
|
|
||||||
|
#
|
||||||
|
@@ -785,6 +817,11 @@ if { [info procs saved-dg-test] == [list] } {
|
||||||
|
if [info exists set_target_env_var] {
|
||||||
|
unset set_target_env_var
|
||||||
|
}
|
||||||
|
+ if [info exists set_compiler_env_var] {
|
||||||
|
+ restore-compiler-env-var
|
||||||
|
+ unset set_compiler_env_var
|
||||||
|
+ unset saved_compiler_env_var
|
||||||
|
+ }
|
||||||
|
unset_timeout_vars
|
||||||
|
if [info exists compiler_conditional_xfail_data] {
|
||||||
|
unset compiler_conditional_xfail_data
|
||||||
|
diff --git a/libcpp/include/cpplib.h b/libcpp/include/cpplib.h
|
||||||
|
index 7a5481219be..867aeebc39f 100644
|
||||||
|
--- a/libcpp/include/cpplib.h
|
||||||
|
+++ b/libcpp/include/cpplib.h
|
||||||
|
@@ -585,6 +585,9 @@ struct cpp_callbacks
|
||||||
|
|
||||||
|
/* Callback that can change a user builtin into normal macro. */
|
||||||
|
bool (*user_builtin_macro) (cpp_reader *, cpp_hashnode *);
|
||||||
|
+
|
||||||
|
+ /* Callback to parse SOURCE_DATE_EPOCH from environment. */
|
||||||
|
+ time_t (*get_source_date_epoch) (cpp_reader *);
|
||||||
|
};
|
||||||
|
|
||||||
|
#ifdef VMS
|
||||||
|
@@ -775,9 +778,6 @@ extern void cpp_init_special_builtins (cpp_reader *);
|
||||||
|
/* Set up built-ins like __FILE__. */
|
||||||
|
extern void cpp_init_builtins (cpp_reader *, int);
|
||||||
|
|
||||||
|
-/* Initialize the source_date_epoch value. */
|
||||||
|
-extern void cpp_init_source_date_epoch (cpp_reader *, time_t);
|
||||||
|
-
|
||||||
|
/* This is called after options have been parsed, and partially
|
||||||
|
processed. */
|
||||||
|
extern void cpp_post_options (cpp_reader *);
|
||||||
|
diff --git a/libcpp/init.c b/libcpp/init.c
|
||||||
|
index a8d00f4628b..61c9bbbf945 100644
|
||||||
|
--- a/libcpp/init.c
|
||||||
|
+++ b/libcpp/init.c
|
||||||
|
@@ -254,6 +254,9 @@ cpp_create_reader (enum c_lang lang, cpp_hash_table *table,
|
||||||
|
/* Do not force token locations by default. */
|
||||||
|
pfile->forced_token_location_p = NULL;
|
||||||
|
|
||||||
|
+ /* Initialize source_date_epoch to -2 (not yet set). */
|
||||||
|
+ pfile->source_date_epoch = (time_t) -2;
|
||||||
|
+
|
||||||
|
/* The expression parser stack. */
|
||||||
|
_cpp_expand_op_stack (pfile);
|
||||||
|
|
||||||
|
@@ -530,13 +533,6 @@ cpp_init_builtins (cpp_reader *pfile, int hosted)
|
||||||
|
_cpp_define_builtin (pfile, "__OBJC__ 1");
|
||||||
|
}
|
||||||
|
|
||||||
|
-/* Initialize the source_date_epoch value. */
|
||||||
|
-void
|
||||||
|
-cpp_init_source_date_epoch (cpp_reader *pfile, time_t source_date_epoch)
|
||||||
|
-{
|
||||||
|
- pfile->source_date_epoch = source_date_epoch;
|
||||||
|
-}
|
||||||
|
-
|
||||||
|
/* Sanity-checks are dependent on command-line options, so it is
|
||||||
|
called as a subroutine of cpp_read_main_file (). */
|
||||||
|
#if ENABLE_CHECKING
|
||||||
|
diff --git a/libcpp/internal.h b/libcpp/internal.h
|
||||||
|
index 8507eba1747..226ae328e76 100644
|
||||||
|
--- a/libcpp/internal.h
|
||||||
|
+++ b/libcpp/internal.h
|
||||||
|
@@ -503,7 +503,8 @@ struct cpp_reader
|
||||||
|
const unsigned char *time;
|
||||||
|
|
||||||
|
/* Externally set timestamp to replace current date and time useful for
|
||||||
|
- reproducibility. */
|
||||||
|
+ reproducibility. It should be initialized to -2 (not yet set) and
|
||||||
|
+ set to -1 to disable it or to a non-negative value to enable it. */
|
||||||
|
time_t source_date_epoch;
|
||||||
|
|
||||||
|
/* EOF token, and a token forcing paste avoidance. */
|
||||||
|
diff --git a/libcpp/macro.c b/libcpp/macro.c
|
||||||
|
index 3f3b278e97d..756c7c6e0c6 100644
|
||||||
|
--- a/libcpp/macro.c
|
||||||
|
+++ b/libcpp/macro.c
|
||||||
|
@@ -351,9 +351,13 @@ _cpp_builtin_macro_text (cpp_reader *pfile, cpp_hashnode *node)
|
||||||
|
struct tm *tb = NULL;
|
||||||
|
|
||||||
|
/* Set a reproducible timestamp for __DATE__ and __TIME__ macro
|
||||||
|
- usage if SOURCE_DATE_EPOCH is defined. */
|
||||||
|
- if (pfile->source_date_epoch != (time_t) -1)
|
||||||
|
- tb = gmtime (&pfile->source_date_epoch);
|
||||||
|
+ if SOURCE_DATE_EPOCH is defined. */
|
||||||
|
+ if (pfile->source_date_epoch == (time_t) -2
|
||||||
|
+ && pfile->cb.get_source_date_epoch != NULL)
|
||||||
|
+ pfile->source_date_epoch = pfile->cb.get_source_date_epoch (pfile);
|
||||||
|
+
|
||||||
|
+ if (pfile->source_date_epoch >= (time_t) 0)
|
||||||
|
+ tb = gmtime (&pfile->source_date_epoch);
|
||||||
|
else
|
||||||
|
{
|
||||||
|
/* (time_t) -1 is a legitimate value for "number of seconds
|
||||||
|
--
|
||||||
|
2.11.0
|
||||||
|
|
Loading…
Reference in New Issue