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libsframe: add the SFrame library

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libsframe is a library that allows you to:
- decode a .sframe section
- probe and inspect a .sframe section
- encode (and eventually write) a .sframe section.

This library is currently being used by the linker, readelf, objdump.
This library will also be used by the SFrame unwinder which is still
to be upstream'd.

The file include/sframe-api.h defines the user-facing APIs for decoding,
encoding and probing .sframe sections. A set of error codes together
with their error message strings are also defined.

Endian flipping is performed automatically at read and write time, if
cross-endianness is detected.

ChangeLog:

	* Makefile.def: Add libsframe as new module with its
	dependencies.
	* Makefile.in: Regenerated.
	* binutils/Makefile.am: Add libsframe.
	* binutils/Makefile.in: Regenerated.
	* configure: Regenerated
	* configure.ac: Add libsframe to host_libs.
	* libsframe/Makefile.am: New file.
	* libsframe/Makefile.in: New file.
	* libsframe/aclocal.m4: New file.
	* libsframe/config.h.in: New file.
	* libsframe/configure: New file.
	* libsframe/configure.ac: New file.
	* libsframe/sframe-error.c: New file.
	* libsframe/sframe-impl.h: New file.
	* libsframe/sframe.c: New file.

include/ChangeLog:

	* sframe-api.h: New file.

testsuite/ChangeLog:

	* libsframe/testsuite/Makefile.am: New file.
	* libsframe/testsuite/Makefile.in: Regenerated.
	* libsframe/testsuite/libsframe.decode/Makefile.am: New
	  file.
	* libsframe/testsuite/libsframe.decode/Makefile.in:
	  Regenerated.
	* libsframe/testsuite/libsframe.decode/decode.exp: New file.
	* libsframe/testsuite/libsframe.encode/Makefile.am:
	  Likewise.
	* libsframe/testsuite/libsframe.encode/Makefile.in:
	  Regenerated.
	* libsframe/testsuite/libsframe.encode/encode.exp: New file.
	* libsframe/testsuite/libsframe.encode/encode-1.c: Likewise.
	* libsframe/testsuite/libsframe.decode/be-flipping.c: Likewise.
	* libsframe/testsuite/libsframe.decode/frecnt-1.c: Likewise.
	* libsframe/testsuite/libsframe.decode/frecnt-2.c: Likewise.
	* libsframe/testsuite/libsframe.decode/DATA-BE: New file.
	* libsframe/testsuite/libsframe.decode/DATA1: Likewise.
	* libsframe/testsuite/libsframe.decode/DATA2: Likewise.
This commit is contained in:
Weimin Pan
2022-11-15 15:06:59 -08:00
committed by Indu Bhagat
parent dc56ee029e
commit 19e559f1c9
30 changed files with 21577 additions and 7 deletions
Download Patch File Download Diff File Expand all files Collapse all files

54
libsframe/testsuite/config/default.exp Normal file
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# Basic expect script for libsframe decoder tests.
# Copyright (C) 2022 Free Software Foundation, Inc.
#
# This file is part of the GNU Binutils.
#
# This file is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
# MA 02110-1301, USA.
#
# Written by Jeffrey Wheat (cassidy@cygnus.com)
#
if ![info exists ld] then {
set ld [findfile $base_dir/../ld/ld-new $base_dir/../ld/ld-new [transform ld]]
}
if ![info exists as] then {
set as [findfile $base_dir/../gas/as-new $base_dir/../gas/as-new [transform as]]
}
remote_exec host "mkdir -p tmpdir"
# Make symlinks from tmpdir/libsframe to the linker and assembler in the
# build tree, so that we can use a -B option to gcc to force it to use
# the newly built linker and assembler.
if {![file isdirectory tmpdir/libsframe]} then {
catch "exec mkdir tmpdir/libsframe" status
catch "exec ln -s ../../../ld/ld-new tmpdir/libsframe/ld" status
catch "exec ln -s ld tmpdir/libsframe/collect-ld" status
catch "exec ln -s ../../../gas/as-new tmpdir/libsframe/as" status
}
set gcc_B_opt "-B[pwd]/tmpdir/libsframe/"
set ld_L_opt ""
if {![info exists CC]} {
set CC gcc
}
if {![info exists CFLAGS]} {
set CFLAGS "-g -O2"
}
if {![info exists CFLAGS_FOR_TARGET]} {
set CFLAGS_FOR_TARGET $CFLAGS
}

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libsframe/testsuite/libsframe.decode/DATA-BE Normal file
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libsframe/testsuite/libsframe.decode/DATA1 Normal file
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libsframe/testsuite/libsframe.decode/DATA2 Normal file
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libsframe/testsuite/libsframe.decode/be-flipping.c Normal file
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/* be-flipping.c -- Test for handling different endianness in libsframe.
Copyright (C) 2022 Free Software Foundation, Inc.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include "config.h"
#include <stdio.h>
#include <stdlib.h>
#include <sys/stat.h>
#include "sframe-api.h"
/* DejaGnu should not use gnulib's vsnprintf replacement here. */
#undef vsnprintf
#include <dejagnu.h>
/* SFrame info from the following source (1 fde 5 fres):
static int cnt;
extern void foo (void);
int bar()
{
cnt++;
if (cnt == 3)
foo();
return (cnt);
}
gcc -mbig-endian -Wa,--gsframe -c -O3 t.c
objcopy --dump-section .sframe=DATA-BE t.o
*/
#define DATA "DATA-BE"
int
main (void)
{
sframe_decoder_ctx *dctx = NULL;
uint32_t nfres, fsize;
int32_t fstart;
unsigned char finfo;
int err = 0;
FILE *fp;
struct stat st;
char *sf_buf;
size_t sf_size;
#define TEST(name, cond) \
do \
{ \
if (cond) \
pass (name); \
else \
fail (name); \
} \
while (0)
/* Test setup. */
fp = fopen (DATA, "r");
if (fp == NULL)
goto setup_fail;
if (fstat (fileno (fp), &st) < 0)
{
perror ("fstat");
fclose (fp);
goto setup_fail;
}
sf_buf = malloc (st.st_size);
if (sf_buf == NULL)
{
perror ("malloc");
goto setup_fail;
}
sf_size = fread (sf_buf, 1, st.st_size, fp);
fclose (fp);
if (sf_size == 0)
{
fprintf (stderr, "Decode: Read buffer failed\n");
goto setup_fail;
}
/* Execute tests. */
/* Call to sframe_decode will endian flip the input buffer (big-endian) if
the host running the test is a little-endian system. This endian-flipped
copy of the buffer is kept internally in dctx. */
dctx = sframe_decode (sf_buf, sf_size, &err);
TEST ("be-flipping: Decoder setup", dctx != NULL);
unsigned int fde_cnt = sframe_decoder_get_num_fidx (dctx);
TEST ("be-flipping: Decoder FDE count", fde_cnt == 1);
err = sframe_decoder_get_funcdesc (dctx, 0, &nfres, &fsize, &fstart, &finfo);
TEST ("be-flipping: Decoder get FDE", err == 0);
TEST ("be-flipping: Decoder FRE count", nfres == 5);
sframe_decoder_free (&dctx);
return 0;
setup_fail:
sframe_decoder_free (&dctx);
fail ("be-flipping: Test setup");
return 1;
}

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libsframe/testsuite/libsframe.decode/decode.exp Normal file
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# Copyright (C) 2022 Free Software Foundation, Inc.
#
# This file is part of the GNU Binutils.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
# MA 02110-1301, USA.
#
load_lib dejagnu.exp
# Run the tests only if compatible dejagnu gcc pair is found
if [string equal $COMPAT_DEJAGNU "no"] {
verbose -log "SFrame testsuite needs perhaps a more recent DejaGnu"
unsupported be-flipping
unsupported frecnt-1
unsupported frecnt-2
return;
}
catch "exec ln -s $srcdir/libsframe.decode/DATA1 ." status
catch "exec ln -s $srcdir/libsframe.decode/DATA2 ." status
catch "exec ln -s $srcdir/libsframe.decode/DATA-BE ." status
if { [host_execute "testsuite/libsframe.decode/be-flipping"] ne "" } {
fail "be-flipping"
}
if { [host_execute "testsuite/libsframe.decode/frecnt-1"] ne "" } {
fail "frecnt-1"
}
if { [host_execute "testsuite/libsframe.decode/frecnt-2"] ne "" } {
fail "frecnt-2"
}
catch "exec rm DATA1" status
catch "exec rm DATA2" status
catch "exec rm DATA-BE" status

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libsframe/testsuite/libsframe.decode/frecnt-1.c Normal file
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/* frecnt-1.c -- Test for decoder in libsframe.
Copyright (C) 2022 Free Software Foundation, Inc.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include "config.h"
#include <stdio.h>
#include <stdlib.h>
#include <sys/stat.h>
#include "sframe-api.h"
/* DejaGnu should not use gnulib's vsnprintf replacement here. */
#undef vsnprintf
#include <dejagnu.h>
/*
* SFrame info from the following source (1 fde 4 fres):
* static int cnt;
* int main() { cnt++; return (cnt); }
*/
#define DATA "DATA1"
int
main (void)
{
sframe_decoder_ctx *dctx = NULL;
uint32_t nfres, fsize;
int32_t fstart;
unsigned char finfo;
int err = 0;
FILE *fp;
struct stat st;
char *sf_buf;
size_t sf_size;
#define TEST(name, cond) \
do \
{ \
if (cond) \
pass (name); \
else \
fail (name); \
} \
while (0)
/* Test Setup. */
fp = fopen (DATA, "r");
if (fp == NULL)
goto setup_fail;
if (fstat (fileno (fp), &st) < 0)
{
perror ("fstat");
fclose (fp);
goto setup_fail;
}
sf_buf = malloc (st.st_size);
if (sf_buf == NULL)
{
perror ("malloc");
goto setup_fail;
}
/* Execute tests. */
sf_size = fread (sf_buf, 1, st.st_size, fp);
fclose (fp);
TEST ("frecnt-1: Read data", sf_size != 0);
dctx = sframe_decode (sf_buf, sf_size, &err);
TEST ("frecnt-1: Decoder setup", dctx != NULL);
unsigned int fde_cnt = sframe_decoder_get_num_fidx (dctx);
TEST ("frecnt-1: Decoder FDE count", fde_cnt == 1);
err = sframe_decoder_get_funcdesc (dctx, 0, &nfres, &fsize, &fstart, &finfo);
TEST ("frecnt-1: Decoder get FDE", err == 0);
TEST ("frecnt-1: Decoder FRE count", nfres == 4);
sframe_decoder_free (&dctx);
return 0;
setup_fail:
sframe_decoder_free (&dctx);
fail ("frecnt-1: Test setup");
return 1;
}

104
libsframe/testsuite/libsframe.decode/frecnt-2.c Normal file
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/* frecnt-2.c -- Test for decoder in libsframe.
Copyright (C) 2022 Free Software Foundation, Inc.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include "config.h"
#include <stdio.h>
#include <stdlib.h>
#include <sys/stat.h>
#include "sframe-api.h"
/* DejaGnu should not use gnulib's vsnprintf replacement here. */
#undef vsnprintf
#include <dejagnu.h>
/*
* SFrame info from the following source (2 fde 8 fres):
* static int cnt;
* int foo() { return ++cnt; }
* int main() { return foo(); }
*/
#define DATA "DATA2"
int
main (void)
{
sframe_decoder_ctx *dctx = NULL;
uint32_t nfres, fsize;
int32_t fstart;
unsigned char finfo;
unsigned int i;
int err = 0;
FILE *fp;
struct stat st;
char *sf_buf;
size_t sf_size;
#define TEST(name, cond) \
do \
{ \
if (cond) \
pass (name); \
else \
fail (name); \
} \
while (0)
fp = fopen (DATA, "r");
if (fp == NULL)
goto setup_fail;
if (fstat (fileno (fp), &st) < 0)
{
perror ("fstat");
fclose (fp);
goto setup_fail;
}
sf_buf = malloc (st.st_size);
if (sf_buf == NULL)
{
perror ("malloc");
goto setup_fail;
}
/* Execute tests. */
sf_size = fread (sf_buf, 1, st.st_size, fp);
fclose (fp);
TEST ("frecnt-2: Read data", sf_size != 0);
dctx = sframe_decode (sf_buf, sf_size, &err);
TEST ("frecnt-2: Decode setup", dctx != NULL);
unsigned int fde_cnt = sframe_decoder_get_num_fidx (dctx);
TEST ("frecnt-2: Decode FDE count", fde_cnt == 2);
for (i = 0; i < fde_cnt; ++i)
{
err = sframe_decoder_get_funcdesc (dctx, i, &nfres, &fsize, &fstart,
&finfo);
TEST ("frecnt-2: Decode get FDE", err == 0);
TEST ("frecnt-2: Decode get FRE", nfres == 4);
}
sframe_decoder_free (&dctx);
return 0;
setup_fail:
sframe_decoder_free (&dctx);
fail ("frecnt-2: Test setup");
return 1;
}

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libsframe/testsuite/libsframe.decode/local.mk Normal file
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check_PROGRAMS =
if HAVE_COMPAT_DEJAGNU
check_PROGRAMS += %D%/be-flipping %D%/frecnt-1 %D%/frecnt-2
endif
%C%_be_flipping_SOURCES = %D%/be-flipping.c
%C%_be_flipping_LDADD = ${top_builddir}/libsframe.la
%C%_be_flipping_CPPFLAGS = -I${top_srcdir}/../include -Wall
%C%_frecnt_1_SOURCES = %D%/frecnt-1.c
%C%_frecnt_1_LDADD = ${top_builddir}/libsframe.la
%C%_frecnt_1_CPPFLAGS = -I${top_srcdir}/../include -Wall
%C%_frecnt_2_SOURCES = %D%/frecnt-2.c
%C%_frecnt_2_LDADD = ${top_builddir}/libsframe.la
%C%_frecnt_2_CPPFLAGS = -I${top_srcdir}/../include -Wall

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libsframe/testsuite/libsframe.encode/encode-1.c Normal file
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/* encode-1.c -- Test for encoder in libsframe.
Copyright (C) 2022 Free Software Foundation, Inc.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include "config.h"
#include <stdlib.h>
#include <string.h>
#include <sys/stat.h>
#include "sframe-api.h"
/* DejaGnu should not use gnulib's vsnprintf replacement here. */
#undef vsnprintf
#include <dejagnu.h>
static int
add_fde1 (sframe_encoder_ctx *encode, int idx)
{
int i, err;
/* A contiguous block containing 4 FREs. */
sframe_frame_row_entry fres[]
= { {0x0, 0x3, {0x8, 0, 0}},
{0x1, 0x5, {0x10, 0xf0, 0}},
{0x4, 0x4, {0x10, 0xf0, 0}},
{0x1a, 0x5, {0x8, 0xf0, 0}}
};
unsigned char finfo = sframe_fde_func_info (SFRAME_FRE_TYPE_ADDR1,
SFRAME_FDE_TYPE_PCINC);
err = sframe_encoder_add_funcdesc (encode, 0xfffff03e, 0x1b, finfo, 4);
if (err == -1)
return err;
for (i = 0; i < 4; i++)
if (sframe_encoder_add_fre (encode, idx,fres+i) == SFRAME_ERR)
return -1;
return 0;
}
static int
add_fde2 (sframe_encoder_ctx *encode, int idx)
{
int i, err;
/* A contiguous block containing 4 FREs. */
sframe_frame_row_entry fres[]
= { {0x0, 0x3, {0x8, 0, 0}},
{0x1, 0x5, {0x10, 0xf0, 0}},
{0x4, 0x4, {0x10, 0xf0, 0}},
{0xf, 0x5, {0x8, 0xf0, 0}}
};
unsigned char finfo = sframe_fde_func_info (SFRAME_FRE_TYPE_ADDR1,
SFRAME_FDE_TYPE_PCINC);
err = sframe_encoder_add_funcdesc (encode, 0xfffff059, 0x10, finfo, 4);
if (err == -1)
return err;
for (i = 0; i < 4; i++)
if (sframe_encoder_add_fre (encode, idx, fres+i) == SFRAME_ERR)
return -1;
return 0;
}
/*
* SFrame info from the following source (2 fdes, 4 fres in each fde):
* static int cnt;
* int foo() { return ++cnt; }
* int main() { return foo(); }
*/
#define DATA "DATA2"
static int
data_match (char *sframe_buf, size_t sz)
{
FILE *fp;
struct stat st;
char *sf_buf;
size_t sf_size;
int diffs;
fp = fopen (DATA, "r");
if (fp == NULL)
return 0;
if (fstat (fileno (fp), &st) < 0)
{
perror ("fstat");
fclose (fp);
return 0;
}
sf_buf = malloc (st.st_size);
if (sf_buf == NULL)
{
perror ("malloc");
return 0;
}
sf_size = fread (sf_buf, 1, st.st_size, fp);
fclose (fp);
if (sf_size == 0 || sf_buf == NULL)
{
fprintf (stderr, "Encode: Read section failed\n");
return 0;
}
if (sf_size != sz)
return 0;
diffs = memcmp (sf_buf, sframe_buf, sz);
free (sf_buf);
return diffs == 0;
}
int main (void)
{
sframe_encoder_ctx *encode;
sframe_frame_row_entry frep;
char *sframe_buf;
size_t sf_size;
int err = 0;
unsigned int fde_cnt = 0;
int match_p = 0;
#define TEST(name, cond) \
do \
{ \
if (cond) \
pass (name); \
else \
fail (name); \
} \
while (0)
encode = sframe_encode (SFRAME_VERSION, 0,
SFRAME_ABI_AMD64_ENDIAN_LITTLE,
SFRAME_CFA_FIXED_FP_INVALID,
-8, /* Fixed RA offset for AMD64. */
&err);
fde_cnt = sframe_encoder_get_num_fidx (encode);
TEST ("encode-1: Encoder FDE count", fde_cnt == 0);
err = sframe_encoder_add_fre (encode, 1, &frep);
TEST ("encode-1: Encoder update workflow", err == SFRAME_ERR);
err = add_fde1 (encode, 0);
TEST ("encode-1: Encoder adding FDE1", err == 0);
err = add_fde2 (encode, 1);
TEST ("encode-1: Encoder adding FDE2", err == 0);
fde_cnt = sframe_encoder_get_num_fidx (encode);
TEST ("encode-1: Encoder FDE count", fde_cnt == 2);
sframe_buf = sframe_encoder_write (encode, &sf_size, &err);
TEST ("encode-1: Encoder write", err == 0);
match_p = data_match (sframe_buf, sf_size);
TEST ("encode-1: Encode buffer match", match_p == 1);
sframe_encoder_free (&encode);
return 0;
}

37
libsframe/testsuite/libsframe.encode/encode.exp Normal file
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# Copyright (C) 2022 Free Software Foundation, Inc.
#
# This file is part of the GNU Binutils.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
# MA 02110-1301, USA.
#
load_lib dejagnu.exp
# Run the tests only if compatible dejagnu gcc pair is found
if [string equal $COMPAT_DEJAGNU "no"] {
verbose -log "SFrame testsuite needs perhaps a more recent DejaGnu"
unsupported encode-1
return 0;
}
catch "exec ln -s $srcdir/libsframe.decode/DATA2 ." status
if { [host_execute "testsuite/libsframe.encode/encode-1"] ne "" } {
fail "encode-1"
}
catch "exec rm DATA2" status

7
libsframe/testsuite/libsframe.encode/local.mk Normal file
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if HAVE_COMPAT_DEJAGNU
check_PROGRAMS += %D%/encode-1
endif
%C%_encode_1_SOURCES = %D%/encode-1.c
%C%_encode_1_LDADD = ${top_builddir}/libsframe.la
%C%_encode_1_CPPFLAGS = -I${top_srcdir}/../include -Wall

24
libsframe/testsuite/local.mk Normal file
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# Setup the testing framework
EXPECT = expect
RUNTEST = runtest
RUNTESTFLAGS =
check-DEJAGNU: site.exp
srcroot=`cd $(srcdir) && pwd`; export srcroot; \
r=`pwd`; export r; \
LC_ALL=C; export LC_ALL; \
EXPECT=$(EXPECT); export EXPECT; \
runtest=$(RUNTEST); \
if $(SHELL) -c "$$runtest --version" > /dev/null 2>&1; then \
$$runtest --tool $(DEJATOOL) --srcdir $${srcroot}/testsuite \
CC="$(CC)" \
CROSS_COMPILE="$(CROSS_COMPILE)" \
COMPAT_DEJAGNU="$(COMPAT_DEJAGNU)" \
CFLAGS="$(CFLAGS) -I$(top_srcdir)/../include -I$(top_srcdir) -I$(top_builddir)" \
$(RUNTESTFLAGS); \
else echo "WARNING: could not find \`runtest'" 1>&2; :;\
fi
# libsframe encoder/decoder testsuite
include %D%/libsframe.decode/local.mk
include %D%/libsframe.encode/local.mk