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| author | midipix <writeonce@midipix.org> | 2018-12-22 19:05:43 -0500 |
|---|---|---|
| committer | midipix <writeonce@midipix.org> | 2018-12-22 19:14:28 -0500 |
| commit | ea008a754fd6b24ef545329abea9431d5a5d18b0 (patch) | |
| tree | 578078691e6e32bf49fa76b1c26760b56871e24b /project/config | |
| parent | cbf55d337c89e8822e7e98b93b528127aa7c4cab (diff) | |
| download | sbpython3-ea008a754fd6b24ef545329abea9431d5a5d18b0.tar.bz2 sbpython3-ea008a754fd6b24ef545329abea9431d5a5d18b0.tar.xz | |
project: custom config: test for x87, x64, and IEEE properties at config time.
Diffstat (limited to 'project/config')
| -rw-r--r-- | project/config/cfgdefs.sh | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/project/config/cfgdefs.sh b/project/config/cfgdefs.sh index 560afa6..adbfc33 100644 --- a/project/config/cfgdefs.sh +++ b/project/config/cfgdefs.sh @@ -141,6 +141,50 @@ cfgdefs_perform_common_tests() mb_cfgtest_headers='pthread.h' cfgtest_type_size 'pthread_t' + # toolchain + cfgtest_newline + cfgtest_comment 'toolchain' + + # x87 + mb_code_snippet='' + mb_code_snippet="$mb_code_snippet "'void fn(void)' + mb_code_snippet="$mb_code_snippet "'{__asm__ __volatile__ ("fnstcw pcw");' + mb_code_snippet="$mb_code_snippet "' __asm__ __volatile__ ("fldcw pcw");}' + + if cfgtest_code_snippet "$mb_code_snippet"; then + cfgtest_cflags_append '-DHAVE_GCC_ASM_FOR_X87' + fi + + # x64 + mb_code_snippet='' + mb_code_snippet="$mb_code_snippet "'void fn(void)' + mb_code_snippet="$mb_code_snippet "'{__asm__ __volatile__ ("callq *%rax");}' + + if cfgtest_code_snippet "$mb_code_snippet"; then + cfgtest_cflags_append '-DHAVE_GCC_ASM_FOR_X64' + fi + + # IEEE 754: little endian / big endian + if $mb_cfgtest_cc -E -dM - < /dev/null \ + | grep '__BYTE_ORDER__ __ORDER_LITTLE_ENDIAN__' \ + > /dev/null; then + cfgtest_cflags_append '-DDOUBLE_IS_LITTLE_ENDIAN_IEEE754' + + elif $mb_cfgtest_cc -E -dM - < /dev/null \ + | grep '__BYTE_ORDER__ __ORDER_BIG_ENDIAN__' \ + > /dev/null; then + cfgtest_cflags_append '-DDOUBLE_IS_BIG_ENDIAN_IEEE754' + + else + cfgtest_newline + cfgtest_comment 'cfgdefs.sh: cannot detect little/big endian,' + cfgtest_comment 'cfgtest.sh: so defined both macros below.' + cfgtest_newline + + cfgtest_cflags_append '-DDOUBLE_IS_LITTLE_ENDIAN_IEEE754' + cfgtest_cflags_append '-DDOUBLE_IS_BIG_ENDIAN_IEEE754' + fi + # getrandom: easier to simply test, # than to test whether we need to test # (and then test). |