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Commit3de04e4

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Add PGAC_PROG_VARCC_VARFLAGS_OPT autoconf macro.
The new macro allows to test flags for different compilers and tostore them in different CFLAG like variables. The existingPGAC_PROG_CC_CFLAGS_OPT and PGAC_PROG_CC_VAR_OPT are changed to bejust wrappers around the new function.This'll be used by the upcoming LLVM support, to separately detectcapabilities used by clang, when generating bitcode.Author: Andres FreundDiscussion:https://postgr.es/m/20170901064131.tazjxwus3k2w3ybh@alap3.anarazel.de
1 parent264eb03 commit3de04e4

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2 files changed

+243
-171
lines changed

2 files changed

+243
-171
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‎config/c-compiler.m4

Lines changed: 24 additions & 24 deletions
Original file line numberDiff line numberDiff line change
@@ -428,26 +428,40 @@ fi])# PGAC_C_VA_ARGS
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431-
#PGAC_PROG_CC_CFLAGS_OPT
431+
#PGAC_PROG_VARCC_VARFLAGS_OPT
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# -----------------------
433-
# Given a string, check if the compiler supports the string as a
434-
# command-line option. If it does, add the string to CFLAGS.
435-
AC_DEFUN([PGAC_PROG_CC_CFLAGS_OPT],
436-
[define([Ac_cachevar],[AS_TR_SH([pgac_cv_prog_cc_cflags_$1])])dnl
437-
AC_CACHE_CHECK([whether $CC supports$1],[Ac_cachevar],
433+
# Given a compiler, variable name and a string, check if the compiler
434+
# supports the string as a command-line option. If it does, add the
435+
# string to the given variable.
436+
AC_DEFUN([PGAC_PROG_VARCC_VARFLAGS_OPT],
437+
[define([Ac_cachevar],[AS_TR_SH([pgac_cv_prog_$1_cflags_$3])])dnl
438+
AC_CACHE_CHECK([whether ${$1} supports$3, for$2],[Ac_cachevar],
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[pgac_save_CFLAGS=$CFLAGS
439-
CFLAGS="$pgac_save_CFLAGS$1"
440+
pgac_save_CC=$CC
441+
CC=${$1}
442+
CFLAGS="${$2}$3"
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ac_save_c_werror_flag=$ac_c_werror_flag
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ac_c_werror_flag=yes
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_AC_COMPILE_IFELSE([AC_LANG_PROGRAM()],
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[Ac_cachevar=yes],
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[Ac_cachevar=no])
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ac_c_werror_flag=$ac_save_c_werror_flag
446-
CFLAGS="$pgac_save_CFLAGS"])
449+
CFLAGS="$pgac_save_CFLAGS"
450+
CC="$pgac_save_CC"])
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if test x"$Ac_cachevar" = x"yes"; then
448-
CFLAGS="$CFLAGS$1"
452+
$2="${$2}$3"
449453
fi
450454
undefine([Ac_cachevar])dnl
455+
])# PGAC_PROG_VARCC_VARFLAGS_OPT
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458+
459+
# PGAC_PROG_CC_CFLAGS_OPT
460+
# -----------------------
461+
# Given a string, check if the compiler supports the string as a
462+
# command-line option. If it does, add the string to CFLAGS.
463+
AC_DEFUN([PGAC_PROG_CC_CFLAGS_OPT],[
464+
PGAC_PROG_VARCC_VARFLAGS_OPT(CC, CFLAGS,$1)
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])# PGAC_PROG_CC_CFLAGS_OPT
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@@ -458,21 +472,7 @@ undefine([Ac_cachevar])dnl
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# the string as a command-line option. If it does, add the string to
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# the given variable.
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AC_DEFUN([PGAC_PROG_CC_VAR_OPT],
461-
[define([Ac_cachevar],[AS_TR_SH([pgac_cv_prog_cc_cflags_$2])])dnl
462-
AC_CACHE_CHECK([whether $CC supports$2],[Ac_cachevar],
463-
[pgac_save_CFLAGS=$CFLAGS
464-
CFLAGS="$pgac_save_CFLAGS$2"
465-
ac_save_c_werror_flag=$ac_c_werror_flag
466-
ac_c_werror_flag=yes
467-
_AC_COMPILE_IFELSE([AC_LANG_PROGRAM()],
468-
[Ac_cachevar=yes],
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[Ac_cachevar=no])
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ac_c_werror_flag=$ac_save_c_werror_flag
471-
CFLAGS="$pgac_save_CFLAGS"])
472-
if test x"$Ac_cachevar" = x"yes"; then
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$1="${$1}$2"
474-
fi
475-
undefine([Ac_cachevar])dnl
475+
[PGAC_PROG_VARCC_VARFLAGS_OPT(CC,$1,$2)
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])# PGAC_PROG_CC_VAR_OPT
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