2018-10-20 06:37:56 -04:00
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dnl expatcfg-compiler-supports-visibility.m4 --
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2018-10-18 07:27:40 -04:00
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dnl
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dnl SYNOPSIS
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dnl
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dnl EXPAT_COMPILER_SUPPORTS_VISIBILITY([ACTION-IF-YES], [ACTION-IF-NO])
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dnl
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AC_DEFUN([EXPAT_COMPILER_SUPPORTS_VISIBILITY],
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[AC_MSG_CHECKING(whether compiler supports visibility)
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AS_VAR_COPY([OLDFLAGS],[CFLAGS])
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AS_VAR_APPEND(CFLAGS,[" -fvisibility=hidden -Wall -Werror"])
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AC_COMPILE_IFELSE([AC_LANG_SOURCE([[void __attribute__((visibility("default"))) foo(void); void foo(void) {}]])],
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[AC_MSG_RESULT(yes)
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AS_VAR_COPY([CFLAGS],[OLDFLAGS])
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$1],
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[AC_MSG_RESULT(no)
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AS_VAR_COPY([CFLAGS],[OLDFLAGS])
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$2])])
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dnl end of file
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