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gh-127604: Optimize -ldl usage on platforms that use dlopen for libFFI. (#133081)

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Optimize -ldl usage on platforms that use dlopen for libFFI.
This commit is contained in:
Russell Keith-Magee
2025-04-30 16:28:31 +08:00
committed by GitHub
parent c4b7f7c7ff
commit 58a0f40f1f
2 changed files with 128 additions and 110 deletions
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25
configure.ac
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@@ -2985,15 +2985,6 @@ AC_CHECK_HEADERS([ \
AC_HEADER_DIRENT
AC_HEADER_MAJOR
# for faulthandler
AC_CHECK_HEADERS([execinfo.h link.h dlfcn.h], [
AC_CHECK_FUNCS([backtrace dladdr1], [
# dladdr1 requires -ldl
ac_cv_require_ldl=yes
])
])
AS_VAR_IF([ac_cv_require_ldl], [yes], [AS_VAR_APPEND([LDFLAGS], [" -ldl"])])
# bluetooth/bluetooth.h has been known to not compile with -std=c99.
# http://permalink.gmane.org/gmane.linux.bluez.kernel/22294
SAVE_CFLAGS=$CFLAGS
@@ -3715,6 +3706,22 @@ AC_CHECK_LIB([dl], [dlopen]) # Dynamic linking for SunOS/Solaris and SYSV
AC_CHECK_LIB([dld], [shl_load]) # Dynamic linking for HP-UX
dnl for faulthandler
AC_CHECK_HEADERS([execinfo.h link.h dlfcn.h], [
AC_CHECK_FUNCS([backtrace dladdr1], [
# dladdr1 requires -ldl
ac_cv_require_ldl=yes
])
])
dnl only add -ldl to LDFLAGS if it isn't already part of LIBS (GH-133081)
AS_VAR_IF([ac_cv_require_ldl], [yes], [
AS_VAR_IF([ac_cv_lib_dl_dlopen], [yes], [], [
AS_VAR_APPEND([LDFLAGS], [" -ldl"])
])
])
dnl check for uuid dependencies
AH_TEMPLATE([HAVE_UUID_H], [Define to 1 if you have the <uuid.h> header file.])
AH_TEMPLATE([HAVE_UUID_UUID_H], [Define to 1 if you have the <uuid/uuid.h> header file.])