build: explain current role of LIBS in our Makefile.am files

BLANK_AT_MAKETIME may be used in our Makefile.am files to blank
LIBS variable used in generated makefile at makefile processing
time. Doing this functionally prevents LIBS from being used for
all link targets in given makefile.
This commit is contained in:
Yang Tse 2012-12-04 23:30:05 +01:00
parent 8b02afd9a9
commit b908376bef
7 changed files with 13 additions and 13 deletions

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@ -3364,12 +3364,11 @@ LIBCURL_LIBS=$LIBS
AC_SUBST(LIBCURL_LIBS)
AC_SUBST(CURL_NETWORK_LIBS)
AC_SUBST(CURL_NETWORK_AND_TIME_LIBS)
dnl LIBS is a magic variable that's used for every link
dnl BLANK_AT_MAKETIME might be used in some of our Makefile.am files to
dnl blank LIBS variable used in generated makefile at makefile processing
dnl time. Our test server's Makefile.am uses this to prevent global LIBS
dnl from being used for any test server build target.
dnl BLANK_AT_MAKETIME may be used in our Makefile.am files to blank
dnl LIBS variable used in generated makefile at makefile processing
dnl time. Doing this functionally prevents LIBS from being used for
dnl all link targets in given makefile.
BLANK_AT_MAKETIME=
AC_SUBST(BLANK_AT_MAKETIME)

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@ -48,7 +48,7 @@ if USE_CPPFLAG_CURL_STATICLIB
AM_CPPFLAGS += -DCURL_STATICLIB
endif
# Prevent global LIBS from influencing examples build targets
# Prevent LIBS from being used for all link targets
LIBS = $(BLANK_AT_MAKETIME)
# Dependencies

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@ -132,7 +132,7 @@ if VERSIONED_SYMBOLS
VERSIONED_SYMBOLS = -Wl,--version-script=libcurl.vers
endif
# Prevent global LIBS from influencing lib build targets
# Prevent LIBS from being used for all link targets
LIBS = $(BLANK_AT_MAKETIME)
libcurl_la_LDFLAGS = $(UNDEF) $(VERSIONINFO) $(MIMPURE) $(VERSIONED_SYMBOLS) $(LIBCURL_LIBS)

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@ -54,7 +54,7 @@ include Makefile.inc
# This might hold -Werror
CFLAGS += @CURL_CFLAG_EXTRAS@ @LIBMETALINK_CFLAGS@
# Prevent global LIBS from influencing src build targets
# Prevent LIBS from being used for all link targets
LIBS = $(BLANK_AT_MAKETIME)
if USE_EXPLICIT_LIB_DEPS

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@ -55,8 +55,7 @@ test1022.pl Makefile.inc notexists.pl
CFLAG_CURL_SYMBOL_HIDING = @CFLAG_CURL_SYMBOL_HIDING@
# Prevent global LIBS from influencing libtest build targets
BLANK_AT_MAKETIME = @BLANK_AT_MAKETIME@
# Prevent LIBS from being used for all link targets
LIBS = $(BLANK_AT_MAKETIME)
if USE_EXPLICIT_LIB_DEPS

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@ -50,8 +50,7 @@ AM_CPPFLAGS = -I$(top_builddir)/include/curl \
-I$(top_srcdir)/lib
endif
# Prevent global LIBS from influencing test server build targets
BLANK_AT_MAKETIME = @BLANK_AT_MAKETIME@
# Prevent LIBS from being used for all link targets
LIBS = $(BLANK_AT_MAKETIME)
if DOING_NATIVE_WINDOWS

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@ -54,7 +54,10 @@ endif
EXTRA_DIST = Makefile.inc
LDADD = $(top_builddir)/lib/libcurlu.la @LDFLAGS@ @LIBCURL_LIBS@ @LIBS@
# Prevent LIBS from being used for all link targets
LIBS = $(BLANK_AT_MAKETIME)
LDADD = $(top_builddir)/lib/libcurlu.la @LDFLAGS@ @LIBCURL_LIBS@
DEPENDENCIES = $(top_builddir)/lib/libcurlu.la
AM_CPPFLAGS += -DUNITTESTS