X-Git-Url: https://git.distorted.org.uk/~mdw/catacomb/blobdiff_plain/26e182fc3ae2a40dc7d52bab2318d8d1837dfeee..8f2287ef5c05d496fcb9b012629af007fe56f897:/configure.ac diff --git a/configure.ac b/configure.ac index 86f7944a..e5bf8d88 100644 --- a/configure.ac +++ b/configure.ac @@ -39,6 +39,13 @@ AC_PROG_CC AX_CFLAGS_WARN_ALL AM_PROG_LIBTOOL mdw_LIBTOOL_VERSION_INFO +case $host_os in + cygwin* | mingw* | pw32* | os2* | darwin* | cegcc*) + TEST_LDFLAGS=-no-fast-install ;; + *) + TEST_LDFLAGS=-no-install ;; +esac +AC_SUBST([TEST_LDFLAGS]) AM_PROG_AS @@ -67,27 +74,9 @@ AC_DEFUN([AC_LANG_CONFTEST(CPPAS)], $1 _ACEOF]) -AC_CACHE_CHECK( - [whether the assembler is likely to work], [mdw_cv_gnuish_as], - [AC_LANG_PUSH([CPPAS]) - AC_COMPILE_IFELSE([AC_LANG_SOURCE([[ - .text - .L\$_test = 23 -.macro mymac - .L\$_test = .L\$_test + 1 -.endm - .globl foo - .extern bar - mymac]])], - [mdw_cv_gnuish_as=yes], [mdw_cv_gnuish_as=no]) - AC_LANG_POP([CPPAS])]) -AM_CONDITIONAL([GNUISH_AS], [test $mdw_cv_gnuish_as = yes]) - dnl-------------------------------------------------------------------------- dnl Host-specific configuration. -AC_MSG_CHECKING([CPU family and ABI]) - dnl The table of CPU families and ABIs which we might support. Support is dnl not uniform: each dispatched function might or might not have an dnl implementation for any particular CPU/ABI combination. @@ -96,8 +85,8 @@ AC_DEFUN([catacomb_CPU_FAMILIES], $1([i[[3-6]]86,*], [x86], [sysv]) $1([x86_64,cygwin], [amd64], [win]) $1([x86_64,*], [amd64], [sysv]) - $1([arm,*-gnueabi | arm,*-gnueabihf | dnl - armv*,*-gnueabi | armv*,*-gnueabihf], [armel], [gnueabi])]) + $1([arm,* | armv*,*], [armel], [std]) + $1([aarch64,*], [arm64], [std])]) dnl A utility to clear the `seen' flags, used so as to process each CPU or dnl ABI once. @@ -108,47 +97,73 @@ m4_ifdef([catacomb_seen_abi/$3], [m4_undefine([catacomb_seen_abi/$3])])]) dnl Identify the current host. -if test $mdw_cv_gnuish_as = no; then - CPUFAM=nil ABI=nil -else - case $host_cpu,$host_os in - m4_define([catacomb_CPU_CASE], - [$1) CPUFAM=$2 ABI=$3 ;; +case $host_cpu,$host_os in + m4_define([catacomb_CPU_CASE], + [$1) CPUFAM=$2 ABI=$3 ;; ]) - catacomb_CPU_FAMILIES([catacomb_CPU_CASE]) - *) CPUFAM=nil ABI=nil ;; - esac -fi + catacomb_CPU_FAMILIES([catacomb_CPU_CASE]) + *) CPUFAM=nil ABI=nil ;; +esac -dnl Figure out the current CPU. -catacomb_CPU_FAMILIES([catacomb_CLEAR_FLAGS]) -case $CPUFAM in - m4_define([catacomb_DEFINE_CPU], - [m4_ifdef([catacomb_seen_cpu/$2], [], - [$2) - AC_DEFINE([CPUFAM_]m4_translit([$2], [a-z], [A-Z]), [1], - [Define if host CPU family is \`$2\'.]) - ;;m4_define([catacomb_seen_cpu/$2], [t])])]) - catacomb_CPU_FAMILIES([catacomb_DEFINE_CPU]) +dnl Now check the assembler. We have target-specific requirements here, so +dnl we couldn't do this any earlier. +AC_CACHE_CHECK( + [whether the assembler is likely to work], [mdw_cv_gnuish_as], + [AC_LANG_PUSH([CPPAS]) + AC_COMPILE_IFELSE([AC_LANG_SOURCE([[ + .text + .L\$_test = 23 +.macro mymac + .L\$_test = .L\$_test + 1 +.endm + .globl foo + .extern bar + mymac]])], + [mdw_cv_gnuish_as=yes], [mdw_cv_gnuish_as=no]) + case $CPUFAM in + x86 | amd64) + AC_COMPILE_IFELSE([AC_LANG_SOURCE([[ + .text + .arch pentium4 + .intel_syntax noprefix + .globl foo +foo: + adcd var, 0 + ret + .data +var: .long 1 + ]])], + [:], [mdw_cv_gnuish_as=no]) + ;; + esac + AC_LANG_POP([CPPAS])]) +AM_CONDITIONAL([GNUISH_AS], [test $mdw_cv_gnuish_as = yes]) +if test $mdw_cv_gnuish_as = no; then CPUFAM=nil ABI=nil; fi + +dnl A hairy macro used to set the `CPUFAM_...' and `ABI_...' variables. We +dnl basically need to do the same thing for the family and ABI, so it's worth +dnl some effort to hide the ugliness. +m4_define([catacomb_DEFINE_CPU_OR_ABI], +[case $$1 in + m4_define([_def], + [m4_ifdef([catacomb_seen_$3/$$2], [], + [$$2) + AC_DEFINE([$4]m4_translit([$$2], [a-z], [A-Z]), [1], [$5]) + ;;m4_define([catacomb_seen_$3/$$2], [t])])]) + catacomb_CPU_FAMILIES([_def]) nil) ;; - *) AC_MSG_ERROR([BUG: unexpected cpufam \`$CPUFAM']) ;; -esac -AC_SUBST([CPUFAM]) + *) AC_MSG_ERROR([BUG: unexpected $1 \`$$1']) ;; +esac]) + +dnl Now that's out the way, we can explain what we're doing. +AC_MSG_CHECKING([CPU family and ABI]) -dnl Figure out the current ABI. +dnl Figure out the target CPU family and ABI. catacomb_CPU_FAMILIES([catacomb_CLEAR_FLAGS]) -case $ABI in - m4_define([catacomb_DEFINE_ABI], - [m4_ifdef([catacomb_seen_abi/$3], [], - [$3) - AC_DEFINE([ABI_]m4_translit([$3], [a-z], [A-Z]), [1], - [Define if host ABI variant is \`$3\'.]) - ;;m4_define([catacomb_seen_abi/$3], [t])])]) - catacomb_CPU_FAMILIES([catacomb_DEFINE_ABI]) - nil) ;; - *) AC_MSG_ERROR([BUG: unexpected ABI \`$ABI']) ;; -esac -AC_SUBST([ABI]) +catacomb_DEFINE_CPU_OR_ABI([CPUFAM], [2], [cpu], + [CPUFAM_], [Define if target CPU is \`$][2\'.]) +catacomb_DEFINE_CPU_OR_ABI([ABI], [3], [abi], + [ABI_], [Define if target ABI is \`$][3\'.]) dnl Establish Automake conditions for things. catacomb_CPU_FAMILIES([catacomb_CLEAR_FLAGS]) @@ -171,6 +186,26 @@ case $CPUFAM in *) AC_MSG_RESULT([$CPUFAM/$ABI]) ;; esac +dnl Consider enabling support for assembler-level debugging toys. +AC_ARG_ENABLE([asm-debug], + AS_HELP_STRING([--enable-asm-debug], + [enable assembler debugging features]), + [mdw_asm_debug=$enableval], [mdw_asm_debug=no]) +case $CPUFAM in nil) mdw_asm_debug=no ;; esac +case $mdw_asm_debug in + no) ;; + *) AC_DEFINE([ENABLE_ASM_DEBUG], [1], + [Define to enable assembler-level debugging.]) ;; +esac +AM_CONDITIONAL([ASM_DEBUG], [test x$mdw_asm_debug != xno]) + +dnl Check for leading underscores on C symbols. +LT_SYS_SYMBOL_USCORE +case $sys_symbol_underscore in + yes) AC_DEFINE([SYM_USCORE], [1], + [Define if C symbols are prefixed with an underscore.]) ;; +esac + dnl-------------------------------------------------------------------------- dnl CPU-specific assembler features. @@ -216,22 +251,53 @@ dnl Find out if we're cross-compiling. AM_CONDITIONAL([CROSS_COMPILING], [test "$cross_compiling" = yes]) dnl Various standard types. -AC_CHECK_TYPE([pid_t], [int]) +AC_CHECK_TYPE([pid_t], [], + [AC_DEFINE([pid_t], [int], + [Define to `int' if does not define])]) AC_TYPE_UID_T -AC_CHECK_TYPE([ssize_t], [int]) -AC_CHECK_TYPE([socklen_t], [int]) +AC_CHECK_TYPE([ssize_t], [], + [AC_DEFINE([ssize_t], [int], + [Define to `int' if does not define])]) +AC_CHECK_TYPE([socklen_t], [], + [AC_DEFINE([socklen_t], [int], + [Define to `int' if does not define])], + [AC_INCLUDES_DEFAULT +#include +]) dnl The maths library. -mdw_ORIG_LIBS=$LIBS LIBS= +mdw_ORIG_LIBS=$LIBS LIBS=$CATACOMB_LIBS AC_SEARCH_LIBS([log], [m]) AC_SEARCH_LIBS([sqrt], [m]) -AC_SUBST([MATHLIBS], [$LIBS]) -LIBS=$mdw_ORIG_LIBS +CATACOMB_LIBS=$LIBS LIBS=$mdw_ORIG_LIBS + +dnl Logging is weird under Termux. Unfortunately, it involves macros, so we +dnl have to do this the hard way. +AC_CACHE_CHECK( + [library needed for syslog], [mdw_cv_syslog_lib], + [mdw_ORIG_LIBS=$LIBS LIBS= + for i in 0 1; do + AC_TRY_LINK([#include ], + [openlog("test", LOG_PID, LOG_DAEMON); + syslog(LOG_ERR, "this is a test");], + [ok=t], [ok=nil]) + case $i,$ok in + *,t) mdw_cv_syslog_lib=${LIBS:-none}; break ;; + 0,nil) LIBS="-llog" ;; + 1,nil) AC_MSG_ERROR("failed to link test program") ;; + esac + done + LIBS=$mdw_ORIG_LIBS]) +case $mdw_cv_syslog_lib in + none) LOGLIBS= ;; + *) LOGLIBS=$mdw_cv_syslog_lib ;; +esac +AC_SUBST([LOGLIBS]) dnl Find out whether very long integer types are available. AC_CHECK_HEADERS([stdint.h]) AC_SUBST([have_stdint_h]) -AC_C_LONG_LONG +AX_C_LONG_LONG dnl Some equipment wanted for checking CPU features at runtime. AC_CHECK_HEADERS([asm/hwcap.h]) @@ -239,6 +305,9 @@ AC_CHECK_HEADERS([sys/auxv.h]) AC_CHECK_HEADERS([linux/auxvec.h]) AC_CHECK_FUNCS([getauxval]) +dnl Some equipment for measuring CPU performance. +AC_CHECK_HEADERS([linux/perf_event.h]) + dnl Find the bit lengths of the obvious integer types. This will be useful dnl when deciding on a representation for multiprecision integers. type_bits="" type_bits_sep="" @@ -298,6 +367,21 @@ fi catacomb_LIMIT([SIZET], [=0], [~(size_t)0]) AC_SUBST([limits]) +dnl Figure out other aspects of the implementation's arithmetic. +AC_CACHE_CHECK([whether negative numbers use two's complement], + [catacomb_cv_neg_twoc], +[AC_TRY_COMPILE( +[#include ], +[int check[2*!!(-INT_MAX == INT_MIN + 1) - 1];], +[catacomb_cv_neg_twoc=yes], +[catacomb_cv_neg_twoc=no])]) +case $catacomb_cv_neg_twoc in + yes) + AC_DEFINE([NEG_TWOC], [1], + [Define if signed numbers are represented in two's complement.]) + ;; +esac + dnl Functions used for noise-gathering. AC_CHECK_FUNCS([setgroups]) AC_CHECK_HEADERS([linux/random.h]) @@ -336,11 +420,17 @@ LIBS=$mdw_ORIG_LIBS dnl Memory locking support. AC_CHECK_FUNCS([mlock]) +dnl See if we can find Valgrind's header files. +AC_CHECK_HEADER([valgrind/memcheck.h], + AC_DEFINE([HAVE_VALGRIND_H], [1], + [Define if the Valgrind header files are available.]) + []) + dnl Set the master libraries we need. AC_SUBST([CATACOMB_LIBS]) dnl Necessary support libraries. -PKG_CHECK_MODULES([mLib], [mLib >= 2.2.2.1]) +PKG_CHECK_MODULES([mLib], [mLib >= 2.4.1]) AM_CFLAGS="$AM_CFLAGS $mLib_CFLAGS" dnl--------------------------------------------------------------------------