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ext-toolchain-wrapper: fix uboot/linux with hardfp

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The linux kernel and uboot specify -msoft-float in order to prevent floating
point code from being generated.  This causes a conflict when -mfloat-abi=hard
or -mfloat-abi options are specified in the wrapper. This patch removes the
-mfloat-abi option from the options generated by the wrapper only when
-msoft-float, -mhard-float or -mfloat-abi are specified by the user.

[Peter: fix !BR_FLOAT_ABI case, simplify]
Signed-off-by: Spenser Gilliland <spenser@gillilanding.com>
Tested-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Reviewed-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
This commit is contained in:
Spenser Gilliland 2013-07-19 18:31:58 -05:00 committed by Peter Korsgaard
parent 27c9370344
commit aa86b52ca3
1 changed files with 25 additions and 4 deletions
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29
toolchain/toolchain-external/ext-toolchain-wrapper.c
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@ -8,6 +8,7 @@
* (C) 2011 Peter Korsgaard <jacmet@sunsite.dk>
* (C) 2011 Daniel Nyström <daniel.nystrom@timeterminal.se>
* (C) 2012 Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
* (C) 2013 Spenser Gilliland <spenser@gillilanding.com>
*
* This file is licensed under the terms of the GNU General Public License
* version 2. This program is licensed "as is" without any warranty of any
@ -23,6 +24,15 @@
static char path[PATH_MAX];
static char sysroot[PATH_MAX];
/**
* GCC errors out with certain combinations of arguments (examples are
* -mabi-float={hard|soft} and -m{little|big}-endian), so we have to ensure
* that we only pass the predefined one to the real compiler if the inverse
* option isn't in the argument list.
* This specifies the worst case number of extra arguments we might pass
*/
#define EXCLUSIVE_ARGS 1
static char *predef_args[] = {
path,
"--sysroot", sysroot,
@ -38,9 +48,6 @@ static char *predef_args[] = {
#ifdef BR_ABI
"-mabi=" BR_ABI,
#endif
#ifdef BR_FLOAT_ABI
"-mfloat-abi=" BR_FLOAT_ABI,
#endif
#ifdef BR_FPU
"-mfpu=" BR_FPU,
#endif
@ -119,7 +126,8 @@ int main(int argc, char **argv)
return 3;
}
cur = args = malloc(sizeof(predef_args) + (sizeof(char *) * argc));
cur = args = malloc(sizeof(predef_args) +
(sizeof(char *) * (argc + EXCLUSIVE_ARGS)));
if (args == NULL) {
perror(__FILE__ ": malloc");
return 2;
@ -129,6 +137,19 @@ int main(int argc, char **argv)
memcpy(cur, predef_args, sizeof(predef_args));
cur += sizeof(predef_args) / sizeof(predef_args[0]);
#ifdef BR_FLOAT_ABI
/* add float abi if not overridden in args */
for (i = 1; i < argc; i++) {
if (!strncmp(argv[i], "-mfloat-abi=", strlen("-mfloat-abi=")) ||
!strcmp(argv[i], "-msoft-float") ||
!strcmp(argv[i], "-mhard-float"))
break;
}
if (i == argc)
*cur++ = "-mfloat-abi=" BR_FLOAT_ABI;
#endif
/* append forward args */
memcpy(cur, &argv[1], sizeof(char *) * (argc - 1));
cur += argc - 1;