diff options
Diffstat (limited to 'configure.ac')
| -rw-r--r-- | configure.ac | 105 |
1 files changed, 68 insertions, 37 deletions
diff --git a/configure.ac b/configure.ac index d4f1251..6dc7c69 100644 --- a/configure.ac +++ b/configure.ac @@ -16,7 +16,7 @@ LU_DEFINE_VERSION_ATOM([LIBUSB_MICRO]) LU_DEFINE_VERSION_RC_ATOM([LIBUSB_RC]) AC_PREREQ([2.69]) -AC_INIT([libusb-1.0], [LIBUSB_MAJOR[.]LIBUSB_MINOR[.]LIBUSB_MICRO[]LIBUSB_RC], [libusb-devel@lists.sourceforge.net], [libusb-1.0], [http://libusb.info]) +AC_INIT([libusb-1.0], [LIBUSB_MAJOR[.]LIBUSB_MINOR[.]LIBUSB_MICRO[]LIBUSB_RC], [libusb-devel@lists.sourceforge.net], [libusb-1.0], [https://libusb.info]) AC_CONFIG_HEADERS([config.h]) AC_CONFIG_SRCDIR([libusb/core.c]) AC_CONFIG_MACRO_DIR([m4]) @@ -31,9 +31,9 @@ dnl Library versioning dnl These numbers should be tweaked on every release. Read carefully: dnl http://www.gnu.org/software/libtool/manual/html_node/Updating-version-info.html dnl http://sourceware.org/autobook/autobook/autobook_91.html -lt_current=3 +lt_current=4 lt_revision=0 -lt_age=3 +lt_age=4 LT_LDFLAGS="-version-info ${lt_current}:${lt_revision}:${lt_age} -no-undefined" m4_ifdef([AM_SILENT_RULES],[AM_SILENT_RULES([yes])]) @@ -83,6 +83,17 @@ case $host in backend=haiku platform=posix ;; +wasm*-emscripten) + AC_MSG_RESULT([Emscripten]) + backend=emscripten + platform=posix + ;; +wasm*-unknown-none) + AC_MSG_ERROR([ +--host=$host_alias is not accepted as it might become ambiguous in the future. +Please use an explicit --host=$host_cpu-emscripten instead. + ]) + ;; *-linux* | *-uclinux*) dnl on Android Linux, some functions are in different places case $host in @@ -123,7 +134,7 @@ case $host in backend=windows platform=windows test "x$enable_shared" = xyes && create_import_lib=yes - EXTRA_CFLAGS="-mwin32 -fno-omit-frame-pointer" + EXTRA_CFLAGS="-fno-omit-frame-pointer" EXTRA_LDFLAGS="-static-libgcc" ;; *) @@ -138,7 +149,11 @@ esac if test "x$platform" = xposix; then AC_DEFINE([PLATFORM_POSIX], [1], [Define to 1 if compiling for a POSIX platform.]) AC_CHECK_TYPES([nfds_t], [], [], [[#include <poll.h>]]) - AC_CHECK_FUNCS([pipe2]) + if test "x$backend" != xemscripten; then + # pipe2 is detected as present on Emscripten, but it isn't actually ported and always + # returns an error. https://github.com/emscripten-core/emscripten/issues/14824 + AC_CHECK_FUNCS([pipe2]) + fi dnl Some compilers do not support the '-pthread' option so check for it here saved_CFLAGS="${CFLAGS}" CFLAGS="-Wall -Werror -pthread" @@ -153,7 +168,21 @@ if test "x$platform" = xposix; then AC_SEARCH_LIBS([pthread_create], [pthread], [test "x$ac_cv_search_pthread_create" != "xnone required" && AC_SUBST(THREAD_LIBS, [-lpthread])], [], []) - AC_SEARCH_LIBS([__atomic_fetch_add_4], [atomic]) + dnl Check for new-style atomic builtins. We first check without linking to -latomic. + AC_MSG_CHECKING(whether __atomic_load_n is supported) + AC_LINK_IFELSE([AC_LANG_SOURCE([[ + #include <stdint.h> + int main() { + struct { + uint64_t *v; + } x; + return (int)__atomic_load_n(x.v, __ATOMIC_ACQUIRE) & + (int)__atomic_add_fetch(x.v, (uint64_t)1, __ATOMIC_ACQ_REL); + }]])], GCC_ATOMIC_BUILTINS_SUPPORTED=yes, GCC_ATOMIC_BUILTINS_SUPPORTED=no) + AC_MSG_RESULT($GCC_ATOMIC_BUILTINS_SUPPORTED) + if test "x$GCC_ATOMIC_BUILTINS_SUPPORTED" != xyes; then + AC_SEARCH_LIBS([__atomic_fetch_add_4], [atomic]) + fi elif test "x$platform" = xwindows; then AC_DEFINE([PLATFORM_WINDOWS], [1], [Define to 1 if compiling for a Windows platform.]) else @@ -181,12 +210,14 @@ linux) AC_CHECK_LIB([udev], [udev_new], [], [AC_MSG_ERROR([udev support requested but libudev not installed])]) # We can build umockdev tests (if available) - PKG_PROG_PKG_CONFIG - PKG_CHECK_MODULES(UMOCKDEV, umockdev-1.0 >= 0.16.0, ac_have_umockdev=yes, ac_have_umockdev=no) - PKG_CHECK_MODULES(UMOCKDEV_HOTPLUG, umockdev-1.0 >= 0.17.7, ac_umockdev_hotplug=yes, ac_umockdev_hotplug=no) - if test "x$ac_umockdev_hotplug" = xyes; then - AC_DEFINE([UMOCKDEV_HOTPLUG], [1], [UMockdev hotplug code is not racy]) - fi + m4_ifdef([PKG_PROG_PKG_CONFIG],[ + PKG_PROG_PKG_CONFIG + PKG_CHECK_MODULES([UMOCKDEV], [umockdev-1.0 >= 0.16.0], [ac_have_umockdev=yes], [ac_have_umockdev=no]) + PKG_CHECK_MODULES([UMOCKDEV_HOTPLUG], [umockdev-1.0 >= 0.17.7], [ac_umockdev_hotplug=yes], [ac_umockdev_hotplug=no]) + if test $ac_umockdev_hotplug = yes; then + AC_DEFINE([UMOCKDEV_HOTPLUG], [1], [UMockdev hotplug code is not racy]) + fi + ], []) else AC_CHECK_HEADERS([asm/types.h]) AC_CHECK_HEADER([linux/netlink.h], [], [AC_MSG_ERROR([Linux netlink header not found])]) @@ -199,7 +230,13 @@ sunos) windows) AC_CHECK_TYPES([struct timespec], [], [], [[#include <time.h>]]) AC_DEFINE([_WIN32_WINNT], [_WIN32_WINNT_VISTA], [Define to the oldest supported Windows version.]) - LT_LDFLAGS="${LT_LDFLAGS} -avoid-version -Wl,--add-stdcall-alias" + LT_LDFLAGS="${LT_LDFLAGS} -avoid-version" + ;; +emscripten) + # Note: LT_LDFLAGS is not enough here because we need link flags for executable. + EM_LDFLAGS="--bind -s ASYNCIFY" + AM_LDFLAGS="${AM_LDFLAGS} ${EM_LDFLAGS} -s ASSERTIONS -s ALLOW_MEMORY_GROWTH" + LIBS="${LIBS} ${EM_LDFLAGS}" ;; *) dnl no special handling required @@ -209,29 +246,9 @@ esac dnl headers not available on all platforms but required on others AC_CHECK_HEADERS([sys/time.h]) -if test "x$platform" = xposix; then - dnl check availability of clock_gettime() - if test "x$backend" = xdarwin; then - dnl need to verify that OS X target is 10.12 or later for clock_gettime() - AC_MSG_CHECKING([whether OS X target version is 10.12 or later]) - AC_COMPILE_IFELSE([AC_LANG_PROGRAM([ - #include <AvailabilityMacros.h> - #if MAC_OS_X_VERSION_MIN_REQUIRED < 101200 - # error "Target OS X version is too old" - #endif - ], [])], - [AC_MSG_RESULT([yes]) - osx_10_12_or_later=yes], - [AC_MSG_RESULT([no]) - osx_10_12_or_later=]) - if test "x$osx_10_12_or_later" = xyes; then - AC_CHECK_FUNCS([clock_gettime], [have_clock_gettime=yes], [have_clock_gettime=]) - else - AC_MSG_NOTICE([clock_gettime() is not available on target OS X version]) - fi - else - AC_CHECK_FUNCS([clock_gettime], [have_clock_gettime=yes], [AC_MSG_ERROR([clock_gettime() is required on this platform])]) - fi +dnl check availability of clock_gettime(), except don't bother on Darwin, because the result is not used. +if test "x$platform" = xposix && test "x$backend" != xdarwin; then + AC_CHECK_FUNCS([clock_gettime], [have_clock_gettime=yes], [AC_MSG_ERROR([clock_gettime() is required on this platform])]) if test "x$have_clock_gettime" = xyes; then dnl the clock_gettime() function needs certain clock IDs defined @@ -366,7 +383,7 @@ AC_ARG_ENABLE([tests-build], AM_CONDITIONAL([BUILD_EXAMPLES], [test "x$build_examples" != xno]) AM_CONDITIONAL([BUILD_TESTS], [test "x$build_tests" != xno]) -AM_CONDITIONAL([BUILD_UMOCKDEV_TEST], [test "x$ac_have_umockdev" = xyes -a "x$log_enabled" != xno]) +AM_CONDITIONAL([BUILD_UMOCKDEV_TEST], [test "x$ac_have_umockdev" = xyes -a "x$log_enabled" != xno -a "x$debug_log_enabled" != xyes]) AM_CONDITIONAL([CREATE_IMPORT_LIB], [test "x$create_import_lib" = xyes]) AM_CONDITIONAL([OS_DARWIN], [test "x$backend" = xdarwin]) AM_CONDITIONAL([OS_HAIKU], [test "x$backend" = xhaiku]) @@ -376,6 +393,7 @@ AM_CONDITIONAL([OS_NULL], [test "x$backend" = xnull]) AM_CONDITIONAL([OS_OPENBSD], [test "x$backend" = xopenbsd]) AM_CONDITIONAL([OS_SUNOS], [test "x$backend" = xsunos]) AM_CONDITIONAL([OS_WINDOWS], [test "x$backend" = xwindows]) +AM_CONDITIONAL([OS_EMSCRIPTEN], [test "x$backend" = xemscripten]) AM_CONDITIONAL([PLATFORM_POSIX], [test "x$platform" = xposix]) AM_CONDITIONAL([PLATFORM_WINDOWS], [test "x$platform" = xwindows]) AM_CONDITIONAL([USE_UDEV], [test "x$use_udev" = xyes]) @@ -391,6 +409,18 @@ if test "x$backend" = xwindows; then CFLAGS="${saved_CFLAGS}" fi +dnl Some linkers do not support the '--add-stdcall-alias' option so check for it here +if test "x$backend" = xwindows; then + saved_CFLAGS="${CFLAGS}" + CFLAGS="-Wl,--add-stdcall-alias" + AC_MSG_CHECKING([if linker supports --add-stdcall-alias]) + AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])], + [AC_MSG_RESULT([yes]) + LT_LDFLAGS="${LT_LDFLAGS} -Wl,--add-stdcall-alias"], + [AC_MSG_RESULT([no])]) + CFLAGS="${saved_CFLAGS}" +fi + SHARED_CFLAGS="-Wall -Wextra -Wshadow -Wunused -Wwrite-strings -Werror=format-security -Werror=implicit-function-declaration -Werror=implicit-int -Werror=init-self -Werror=missing-prototypes -Werror=strict-prototypes -Werror=undef -Werror=uninitialized" AM_CPPFLAGS="${EXTRA_CPPFLAGS}" @@ -403,6 +433,7 @@ AM_CXXFLAGS="-std=${c_dialect}++11 ${EXTRA_CFLAGS} ${SHARED_CFLAGS} -Wmissing-de AC_SUBST(AM_CXXFLAGS) AC_SUBST(LT_LDFLAGS) +AC_SUBST(AM_LDFLAGS) AC_SUBST([EXTRA_LDFLAGS]) |